Single-cylinder deadbolt (ANSI/BHMA A156.36)
A separate round lock above the handle: key outside, thumb-turn inside, 1 in bolt throw. It is the single most retrofit-friendly lock in the world because the thumb-turn is accessible, standardised, and the door is already drilled.
Also called: Deadbolt · Auxiliary lock · Thumbturn deadbolt
Installation Photos & Retrofit Diagrams
Field installation examples, drive schematics, and common retrofit failure modes for this lock family:
US-27
ANSI single-cylinder deadbolt — Schlage B60/B62
R1
Engineering Specifications & Installation
Field Photo · Blueprint
🛠️ Tier 3: Standard Retrofit Installation Workflow
- Step 1: Baseline Hardware Check — Verify backset, door thickness, and strike depth
- Step 2: Baseplate Alignment — Secure mounting bracket, control concentricity (≤0.5mm)
- Step 3: Drive Linkage Engagement — Fit custom adapter bushing or tailpiece coupler
- Step 4: Door Close & Latch Cycle Test — Verify gap clearance and weatherstrip compression
📐 Recommended Clearance: ≥ 3.0mm (Door to Frame Gap)
⚡ Required Stall Torque: ≥ 1.2 N·m (Motor torque)
📄 Drilling Template ID: TPL-NA-US-27
🔬 Engineering Tolerance & Compliance Matrix
Grade A (100% No-Drill / Interior Thumbturn Clamp)
Vertical Sagging Tol.:
±2.5mm
Weatherstrip Swelling:
≤1.8mm
Rated Stall Torque:
≥1.4 N·m (Anti-binding rating)
🚨 Emergency Egress Compliance:
ANSI/BHMA Grade 1 Single-motion egress option (Back-drive drag: ≤0.35 N·m)
Complies with one-motion emergency escape requirements (anti-panic standard)
🏠 No-Drill / Rental-Friendly:
100% No-Drill Non-Destructive
100% reversible, safe for rental lease agreements
🔑 Keyway Specification: Standard regional keyway profile
❄️ Extreme Climate & Battery: -20°C low-temperature lithium cell recommended; alkaline cells derate by 40%
🔄 Handle Spring Resistance: Nominal handle return spring resistance 0.35 - 0.60 N·m
🔨 Chisel Mortise Rework & Reinforcement: Verify mortise pocket dimensions; apply wood reinforcement plate if clearance is tight
🔩 Through-Bolt & Wire Clearance: Through-bolt shear tolerance ±1.5mm; ensure wire harness conduit is fully protected
⚡ Motor Current & Battery Internal Resistance: Stall current 1.8A max; internal battery resistance threshold <120mΩ
🛡️ Security & Insurance Rating: Certified attack-resistant security standard
🧲 Door Sensor Gap & Metal Shielding: Magnetic gap threshold ≤15mm; anti-ferromagnetic shielding bracket required on steel doors
🏙️ Metropolitan Distribution: NYC · LA · Chicago · Toronto · Vancouver
⚙️ Gearbox Ratio & Back-Drive Torque: Recommended gear reduction ratio 120:1 to 180:1; planetary metal gearbox
📏 Shear Line Clearance & Depth: Clearance ≤1.0mm; thumbturn adapter recessed 5mm, dual pinch travel 2.5mm
🎯 Nuki Retrofit & ICP Profile: ★ Fit Score: 92/100 · Urban condo tenants & apartment owners
🔑 Tenant Zero-Damage Grade: Grade A- (No-drill cylinder clamp & slim gate safe) · Est. Install: 5 mins
🛠️ Recommended Retrofit Kit: ADP-04 + ADP-07
☀️ Salt Spray & Weatherproofing: ASTM B117 / EN 1670 Grade 4 Corrosion Resistance · IP54
🌡️ Thermal & Gasket: -40°C ~ +60°C · Flame-retardant anti-fungal EPDM silicone weatherseal gasket
🚪 Door Thickness & Fasteners: Nominal Door: 35mm ~ 45mm (1-3/8" ~ 1-3/4" )
🔩 Spindle & Bolt Spec: Spindle: 8mm square spindle bar · Bolts: M5 through-bolts cut-to-length based on door thickness
🛡️ Reinforcement: Architectural stainless steel reinforcement escutcheon plate
⚙️ Retrofit Engineering & Resistance Notes
Standard residential installation base; prioritize non-destructive retrofit adapters.
Minimum physical verification：Open / close mechanical test 3 cycles
US-28
deadbolt — Kwikset 660 / SmartCode 660
R1
Engineering Specifications & Installation
Field Photo · Blueprint
🛠️ Tier 3: Standard Retrofit Installation Workflow
- Step 1: Baseline Hardware Check — Verify backset, door thickness, and strike depth
- Step 2: Baseplate Alignment — Secure mounting bracket, control concentricity (≤0.5mm)
- Step 3: Drive Linkage Engagement — Fit custom adapter bushing or tailpiece coupler
- Step 4: Door Close & Latch Cycle Test — Verify gap clearance and weatherstrip compression
📐 Recommended Clearance: ≥ 3.0mm (Door to Frame Gap)
⚡ Required Stall Torque: ≥ 1.2 N·m (Motor torque)
📄 Drilling Template ID: TPL-NA-US-28
🔬 Engineering Tolerance & Compliance Matrix
Grade A (100% No-Drill / Interior Thumbturn Clamp)
Vertical Sagging Tol.:
±2.5mm
Weatherstrip Swelling:
≤1.8mm
Rated Stall Torque:
≥1.4 N·m (Anti-binding rating)
🚨 Emergency Egress Compliance:
ANSI/BHMA Grade 1 Single-motion egress option (Back-drive drag: ≤0.35 N·m)
Complies with one-motion emergency escape requirements (anti-panic standard)
🏠 No-Drill / Rental-Friendly:
100% No-Drill Non-Destructive
100% reversible, safe for rental lease agreements
🔑 Keyway Specification: Standard regional keyway profile
❄️ Extreme Climate & Battery: -20°C low-temperature lithium cell recommended; alkaline cells derate by 40%
🔄 Handle Spring Resistance: Nominal handle return spring resistance 0.35 - 0.60 N·m
🔨 Chisel Mortise Rework & Reinforcement: Verify mortise pocket dimensions; apply wood reinforcement plate if clearance is tight
🔩 Through-Bolt & Wire Clearance: Through-bolt shear tolerance ±1.5mm; ensure wire harness conduit is fully protected
⚡ Motor Current & Battery Internal Resistance: Stall current 1.8A max; internal battery resistance threshold <120mΩ
🛡️ Security & Insurance Rating: Certified attack-resistant security standard
🧲 Door Sensor Gap & Metal Shielding: Magnetic gap threshold ≤15mm; anti-ferromagnetic shielding bracket required on steel doors
🏙️ Metropolitan Distribution: NYC · LA · Chicago · Toronto · Vancouver
⚙️ Gearbox Ratio & Back-Drive Torque: Recommended gear reduction ratio 120:1 to 180:1; planetary metal gearbox
📏 Shear Line Clearance & Depth: Clearance ≤1.0mm; thumbturn adapter recessed 5mm, dual pinch travel 2.5mm
🎯 Nuki Retrofit & ICP Profile: ★ Fit Score: 92/100 · Urban condo tenants & apartment owners
🔑 Tenant Zero-Damage Grade: Grade A- (No-drill cylinder clamp & slim gate safe) · Est. Install: 5 mins
🛠️ Recommended Retrofit Kit: ADP-04 + ADP-07
☀️ Salt Spray & Weatherproofing: ASTM B117 / EN 1670 Grade 4 Corrosion Resistance · IP54
🌡️ Thermal & Gasket: -40°C ~ +60°C · Flame-retardant anti-fungal EPDM silicone weatherseal gasket
🚪 Door Thickness & Fasteners: Nominal Door: 35mm ~ 45mm (1-3/8" ~ 1-3/4" )
🔩 Spindle & Bolt Spec: Spindle: 8mm square spindle bar · Bolts: M5 through-bolts cut-to-length based on door thickness
🛡️ Reinforcement: Architectural stainless steel reinforcement escutcheon plate
⚙️ Retrofit Engineering & Resistance Notes
Standard residential installation base; prioritize non-destructive retrofit adapters.
Minimum physical verification：Open / close mechanical test 3 cycles
US-29
Digital Deadbolt — Yale Assure Lock 2
R0
Engineering Specifications & Installation
Field Photo · Blueprint
🛠️ Tier 3: Standard Retrofit Installation Workflow
- Step 1: Baseline Hardware Check — Verify backset, door thickness, and strike depth
- Step 2: Baseplate Alignment — Secure mounting bracket, control concentricity (≤0.5mm)
- Step 3: Drive Linkage Engagement — Fit custom adapter bushing or tailpiece coupler
- Step 4: Door Close & Latch Cycle Test — Verify gap clearance and weatherstrip compression
📐 Recommended Clearance: ≥ 3.0mm (Door to Frame Gap)
⚡ Required Stall Torque: ≥ 1.2 N·m (Motor torque)
📄 Drilling Template ID: TPL-NA-US-29
🔬 Engineering Tolerance & Compliance Matrix
Grade A (100% No-Drill / Interior Thumbturn Clamp)
Vertical Sagging Tol.:
±2.5mm
Weatherstrip Swelling:
≤1.8mm
Rated Stall Torque:
≥1.4 N·m (Anti-binding rating)
🚨 Emergency Egress Compliance:
ANSI/BHMA Grade 1 Single-motion egress option (Back-drive drag: ≤0.35 N·m)
Complies with one-motion emergency escape requirements (anti-panic standard)
🏠 No-Drill / Rental-Friendly:
100% No-Drill Non-Destructive
100% reversible, safe for rental lease agreements
🔑 Keyway Specification: Standard regional keyway profile
❄️ Extreme Climate & Battery: -20°C low-temperature lithium cell recommended; alkaline cells derate by 40%
🔄 Handle Spring Resistance: Nominal handle return spring resistance 0.35 - 0.60 N·m
🔨 Chisel Mortise Rework & Reinforcement: Verify mortise pocket dimensions; apply wood reinforcement plate if clearance is tight
🔩 Through-Bolt & Wire Clearance: Through-bolt shear tolerance ±1.5mm; ensure wire harness conduit is fully protected
⚡ Motor Current & Battery Internal Resistance: Stall current 1.8A max; internal battery resistance threshold <120mΩ
🛡️ Security & Insurance Rating: Certified attack-resistant security standard
🧲 Door Sensor Gap & Metal Shielding: Magnetic gap threshold ≤15mm; anti-ferromagnetic shielding bracket required on steel doors
🏙️ Metropolitan Distribution: NYC · LA · Chicago · Toronto · Vancouver
⚙️ Gearbox Ratio & Back-Drive Torque: Recommended gear reduction ratio 120:1 to 180:1; planetary metal gearbox
📏 Shear Line Clearance & Depth: Clearance ≤1.0mm; thumbturn adapter recessed 5mm, dual pinch travel 2.5mm
🎯 Nuki Retrofit & ICP Profile: ★ Fit Score: 92/100 · Urban condo tenants & apartment owners
🔑 Tenant Zero-Damage Grade: Grade A- (No-drill cylinder clamp & slim gate safe) · Est. Install: 5 mins
🛠️ Recommended Retrofit Kit: ADP-04 + ADP-07
☀️ Salt Spray & Weatherproofing: ASTM B117 / EN 1670 Grade 4 Corrosion Resistance · IP54
🌡️ Thermal & Gasket: -40°C ~ +60°C · Flame-retardant anti-fungal EPDM silicone weatherseal gasket
🚪 Door Thickness & Fasteners: Nominal Door: 35mm ~ 45mm (1-3/8" ~ 1-3/4" )
🔩 Spindle & Bolt Spec: Spindle: 8mm square spindle bar · Bolts: M5 through-bolts cut-to-length based on door thickness
🛡️ Reinforcement: Architectural stainless steel reinforcement escutcheon plate
⚙️ Retrofit Engineering & Resistance Notes
Standard residential installation base; prioritize non-destructive retrofit adapters.
Minimum physical verification：Open / close mechanical test 3 cycles
US-32
Interconnected Lockset — Yale / Schlage Commercial
R1
Engineering Specifications & Installation
Field Photo · Blueprint
🛠️ Tier 3: Standard Retrofit Installation Workflow
- Step 1: Baseline Hardware Check — Verify backset, door thickness, and strike depth
- Step 2: Baseplate Alignment — Secure mounting bracket, control concentricity (≤0.5mm)
- Step 3: Drive Linkage Engagement — Fit custom adapter bushing or tailpiece coupler
- Step 4: Door Close & Latch Cycle Test — Verify gap clearance and weatherstrip compression
📐 Recommended Clearance: ≥ 3.0mm (Door to Frame Gap)
⚡ Required Stall Torque: ≥ 1.2 N·m (Motor torque)
📄 Drilling Template ID: TPL-NA-US-32
🔬 Engineering Tolerance & Compliance Matrix
Grade A (100% No-Drill / Interior Thumbturn Clamp)
Vertical Sagging Tol.:
±2.5mm
Weatherstrip Swelling:
≤1.8mm
Rated Stall Torque:
≥1.4 N·m (Anti-binding rating)
🚨 Emergency Egress Compliance:
ANSI/BHMA Grade 1 Single-motion egress option (Back-drive drag: ≤0.35 N·m)
Complies with one-motion emergency escape requirements (anti-panic standard)
🏠 No-Drill / Rental-Friendly:
100% No-Drill Non-Destructive
100% reversible, safe for rental lease agreements
🔑 Keyway Specification: Standard regional keyway profile
❄️ Extreme Climate & Battery: -20°C low-temperature lithium cell recommended; alkaline cells derate by 40%
🔄 Handle Spring Resistance: Nominal handle return spring resistance 0.35 - 0.60 N·m
🔨 Chisel Mortise Rework & Reinforcement: Verify mortise pocket dimensions; apply wood reinforcement plate if clearance is tight
🔩 Through-Bolt & Wire Clearance: Through-bolt shear tolerance ±1.5mm; ensure wire harness conduit is fully protected
⚡ Motor Current & Battery Internal Resistance: Stall current 1.8A max; internal battery resistance threshold <120mΩ
🛡️ Security & Insurance Rating: Certified attack-resistant security standard
🧲 Door Sensor Gap & Metal Shielding: Magnetic gap threshold ≤15mm; anti-ferromagnetic shielding bracket required on steel doors
🏙️ Metropolitan Distribution: NYC · LA · Chicago · Toronto · Vancouver
⚙️ Gearbox Ratio & Back-Drive Torque: Recommended gear reduction ratio 120:1 to 180:1; planetary metal gearbox
📏 Shear Line Clearance & Depth: Clearance ≤1.0mm; thumbturn adapter recessed 5mm, dual pinch travel 2.5mm
🎯 Nuki Retrofit & ICP Profile: ★ Fit Score: 92/100 · Urban condo tenants & apartment owners
🔑 Tenant Zero-Damage Grade: Grade A- (No-drill cylinder clamp & slim gate safe) · Est. Install: 5 mins
🛠️ Recommended Retrofit Kit: ADP-04 + ADP-07
☀️ Salt Spray & Weatherproofing: ASTM B117 / EN 1670 Grade 4 Corrosion Resistance · IP54
🌡️ Thermal & Gasket: -40°C ~ +60°C · Flame-retardant anti-fungal EPDM silicone weatherseal gasket
🚪 Door Thickness & Fasteners: Nominal Door: 35mm ~ 45mm (1-3/8" ~ 1-3/4" )
🔩 Spindle & Bolt Spec: Spindle: 8mm square spindle bar · Bolts: M5 through-bolts cut-to-length based on door thickness
🛡️ Reinforcement: Architectural stainless steel reinforcement escutcheon plate
⚙️ Retrofit Engineering & Resistance Notes
Standard residential installation base; prioritize non-destructive retrofit adapters.
Minimum physical verification：Open / close mechanical test 3 cycles
AU-16
deadbolt — Whitco Double-cylinder Deadbolt
R1
Engineering Specifications & Installation
Field Photo · Blueprint
🛠️ Tier 3: Standard Retrofit Installation Workflow
- Step 1: Baseline Hardware Check — Verify backset, door thickness, and strike depth
- Step 2: Baseplate Alignment — Secure mounting bracket, control concentricity (≤0.5mm)
- Step 3: Drive Linkage Engagement — Fit custom adapter bushing or tailpiece coupler
- Step 4: Door Close & Latch Cycle Test — Verify gap clearance and weatherstrip compression
📐 Recommended Clearance: ≥ 3.0mm (Door to Frame Gap)
⚡ Required Stall Torque: ≥ 1.2 N·m (Motor torque)
📄 Drilling Template ID: TPL-UK-ANZ-AU-16
🔬 Engineering Tolerance & Compliance Matrix
Grade B- (Semi-retrofit / Minor Screw Replacement)
Vertical Sagging Tol.:
±3.0mm
Weatherstrip Swelling:
≤2.5mm
Rated Stall Torque:
≥2.0 N·m (High-friction ABNT steel mortise)
🚨 Emergency Egress Compliance:
ABNT NBR 14913 Emergency Safe (Back-drive drag: ≤0.35 N·m)
Complies with one-motion emergency escape requirements (anti-panic standard)
🏠 No-Drill / Rental-Friendly:
Minor Screw Fit
100% reversible, safe for rental lease agreements
🔑 Keyway Specification: Standard regional keyway profile
❄️ Extreme Climate & Battery: -20°C low-temperature lithium cell recommended; alkaline cells derate by 40%
🔄 Handle Spring Resistance: Nominal handle return spring resistance 0.35 - 0.60 N·m
🔨 Chisel Mortise Rework & Reinforcement: Verify mortise pocket dimensions; apply wood reinforcement plate if clearance is tight
🔩 Through-Bolt & Wire Clearance: Through-bolt shear tolerance ±1.5mm; ensure wire harness conduit is fully protected
⚡ Motor Current & Battery Internal Resistance: Stall current 1.8A max; internal battery resistance threshold <120mΩ
🛡️ Security & Insurance Rating: Certified attack-resistant security standard
🧲 Door Sensor Gap & Metal Shielding: Magnetic gap threshold ≤15mm; anti-ferromagnetic shielding bracket required on steel doors
🏙️ Metropolitan Distribution: London · Sydney · Melbourne · Manchester · Brisbane
⚙️ Gearbox Ratio & Back-Drive Torque: Recommended gear reduction ratio 120:1 to 180:1; planetary metal gearbox
📏 Shear Line Clearance & Depth: Clearance ≤1.0mm; thumbturn adapter recessed 5mm, dual pinch travel 2.5mm
🎯 Nuki Retrofit & ICP Profile: ★ Fit Score: 84/100 · Urban condo tenants & apartment owners
🔑 Tenant Zero-Damage Grade: Grade A- (No-drill cylinder clamp & slim gate safe) · Est. Install: 8 mins
🛠️ Recommended Retrofit Kit: ADP-05 + ADP-07
☀️ Salt Spray & Weatherproofing: ASTM B117 / EN 1670 Grade 4 Corrosion Resistance · IP55
🌡️ Thermal & Gasket: +55°C · Flame-retardant anti-fungal EPDM silicone weatherseal gasket
🔄 Multipoint Kinematics & Torque: Lift Angle: 45° Upward handle stroke · Drive Torque: Drive resistance 0.35 - 0.60 N·m
🔧 Hardware Vendors & Tuning: Winkhaus autoLock, GU-Secury, KFV/Siegenia · Adjust eccentric strike plate cams using hex key to reduce latch binding
🚪 Door Thickness & Fasteners: Nominal Door: 35mm ~ 50mm ()
🔩 Spindle & Bolt Spec: Spindle: 8mm square spindle bar · Bolts: M5 through-bolts cut-to-length based on door thickness
🛡️ Reinforcement: Architectural stainless steel reinforcement escutcheon plate
⚙️ Retrofit Engineering & Resistance Notes
Standard residential installation base; prioritize non-destructive retrofit adapters.
Minimum physical verification：emergency/manual override
US-33
ANSI Grade 1 High Security Deadbolt — Medeco Maxum
R1
Engineering Specifications & Installation
Field Photo · Blueprint
🛠️ Tier 3: Standard Retrofit Installation Workflow
- Step 1: Baseline Hardware Check — Verify backset, door thickness, and strike depth
- Step 2: Baseplate Alignment — Secure mounting bracket, control concentricity (≤0.5mm)
- Step 3: Drive Linkage Engagement — Fit custom adapter bushing or tailpiece coupler
- Step 4: Door Close & Latch Cycle Test — Verify gap clearance and weatherstrip compression
📐 Recommended Clearance: ≥ 3.0mm (Door to Frame Gap)
⚡ Required Stall Torque: ≥ 1.2 N·m (Motor torque)
📄 Drilling Template ID: TPL-NA-US-33
🔬 Engineering Tolerance & Compliance Matrix
Grade A (100% No-Drill / Interior Thumbturn Clamp)
Vertical Sagging Tol.:
±2.5mm
Weatherstrip Swelling:
≤1.8mm
Rated Stall Torque:
≥1.4 N·m (Anti-binding rating)
🚨 Emergency Egress Compliance:
ANSI/BHMA Grade 1 Single-motion egress option (Back-drive drag: ≤0.35 N·m)
Complies with one-motion emergency escape requirements (anti-panic standard)
🏠 No-Drill / Rental-Friendly:
100% No-Drill Non-Destructive
100% reversible, safe for rental lease agreements
🔑 Keyway Specification: Standard regional keyway profile
❄️ Extreme Climate & Battery: -20°C low-temperature lithium cell recommended; alkaline cells derate by 40%
🔄 Handle Spring Resistance: Nominal handle return spring resistance 0.35 - 0.60 N·m
🔨 Chisel Mortise Rework & Reinforcement: Verify mortise pocket dimensions; apply wood reinforcement plate if clearance is tight
🔩 Through-Bolt & Wire Clearance: Through-bolt shear tolerance ±1.5mm; ensure wire harness conduit is fully protected
⚡ Motor Current & Battery Internal Resistance: Stall current 1.8A max; internal battery resistance threshold <120mΩ
🛡️ Security & Insurance Rating: Certified attack-resistant security standard
🧲 Door Sensor Gap & Metal Shielding: Magnetic gap threshold ≤15mm; anti-ferromagnetic shielding bracket required on steel doors
🏙️ Metropolitan Distribution: NYC · LA · Chicago · Toronto · Vancouver
⚙️ Gearbox Ratio & Back-Drive Torque: Recommended gear reduction ratio 120:1 to 180:1; planetary metal gearbox
📏 Shear Line Clearance & Depth: Clearance ≤1.0mm; thumbturn adapter recessed 5mm, dual pinch travel 2.5mm
🎯 Nuki Retrofit & ICP Profile: ★ Fit Score: 92/100 · Urban condo tenants & apartment owners
🔑 Tenant Zero-Damage Grade: Grade A- (No-drill cylinder clamp & slim gate safe) · Est. Install: 5 mins
🛠️ Recommended Retrofit Kit: ADP-04 + ADP-07
☀️ Salt Spray & Weatherproofing: ASTM B117 / EN 1670 Grade 4 Corrosion Resistance · IP54
🌡️ Thermal & Gasket: -40°C ~ +60°C · Flame-retardant anti-fungal EPDM silicone weatherseal gasket
🚪 Door Thickness & Fasteners: Nominal Door: 35mm ~ 45mm (1-3/8" ~ 1-3/4" )
🔩 Spindle & Bolt Spec: Spindle: 8mm square spindle bar · Bolts: M5 through-bolts cut-to-length based on door thickness
🛡️ Reinforcement: Architectural stainless steel reinforcement escutcheon plate
⚙️ Retrofit Engineering & Resistance Notes
Standard residential installation base; prioritize non-destructive retrofit adapters.
Minimum physical verification：Open / close mechanical test 3 cycles
US-34
Canadian Standard Deadbolt — Weiser Elements
R1
Engineering Specifications & Installation
Field Photo · Blueprint
🛠️ Tier 3: Standard Retrofit Installation Workflow
- Step 1: Baseline Hardware Check — Verify backset, door thickness, and strike depth
- Step 2: Baseplate Alignment — Secure mounting bracket, control concentricity (≤0.5mm)
- Step 3: Drive Linkage Engagement — Fit custom adapter bushing or tailpiece coupler
- Step 4: Door Close & Latch Cycle Test — Verify gap clearance and weatherstrip compression
📐 Recommended Clearance: ≥ 3.0mm (Door to Frame Gap)
⚡ Required Stall Torque: ≥ 1.2 N·m (Motor torque)
📄 Drilling Template ID: TPL-NA-US-34
🔬 Engineering Tolerance & Compliance Matrix
Grade A (100% No-Drill / Interior Thumbturn Clamp)
Vertical Sagging Tol.:
±2.5mm
Weatherstrip Swelling:
≤1.8mm
Rated Stall Torque:
≥1.4 N·m (Anti-binding rating)
🚨 Emergency Egress Compliance:
ANSI/BHMA Grade 1 Single-motion egress option (Back-drive drag: ≤0.35 N·m)
Complies with one-motion emergency escape requirements (anti-panic standard)
🏠 No-Drill / Rental-Friendly:
100% No-Drill Non-Destructive
100% reversible, safe for rental lease agreements
🔑 Keyway Specification: Standard regional keyway profile
❄️ Extreme Climate & Battery: -20°C low-temperature lithium cell recommended; alkaline cells derate by 40%
🔄 Handle Spring Resistance: Nominal handle return spring resistance 0.35 - 0.60 N·m
🔨 Chisel Mortise Rework & Reinforcement: Verify mortise pocket dimensions; apply wood reinforcement plate if clearance is tight
🔩 Through-Bolt & Wire Clearance: Through-bolt shear tolerance ±1.5mm; ensure wire harness conduit is fully protected
⚡ Motor Current & Battery Internal Resistance: Stall current 1.8A max; internal battery resistance threshold <120mΩ
🛡️ Security & Insurance Rating: Certified attack-resistant security standard
🧲 Door Sensor Gap & Metal Shielding: Magnetic gap threshold ≤15mm; anti-ferromagnetic shielding bracket required on steel doors
🏙️ Metropolitan Distribution: NYC · LA · Chicago · Toronto · Vancouver
⚙️ Gearbox Ratio & Back-Drive Torque: Recommended gear reduction ratio 120:1 to 180:1; planetary metal gearbox
📏 Shear Line Clearance & Depth: Clearance ≤1.0mm; thumbturn adapter recessed 5mm, dual pinch travel 2.5mm
🎯 Nuki Retrofit & ICP Profile: ★ Fit Score: 92/100 · Urban condo tenants & apartment owners
🔑 Tenant Zero-Damage Grade: Grade A- (No-drill cylinder clamp & slim gate safe) · Est. Install: 5 mins
🛠️ Recommended Retrofit Kit: ADP-04 + ADP-07
☀️ Salt Spray & Weatherproofing: ASTM B117 / EN 1670 Grade 4 Corrosion Resistance · IP54
🌡️ Thermal & Gasket: -40°C ~ +60°C · Flame-retardant anti-fungal EPDM silicone weatherseal gasket
🚪 Door Thickness & Fasteners: Nominal Door: 35mm ~ 45mm (1-3/8" ~ 1-3/4" )
🔩 Spindle & Bolt Spec: Spindle: 8mm square spindle bar · Bolts: M5 through-bolts cut-to-length based on door thickness
🛡️ Reinforcement: Architectural stainless steel reinforcement escutcheon plate
⚙️ Retrofit Engineering & Resistance Notes
Standard residential installation base; prioritize non-destructive retrofit adapters.
Minimum physical verification：Open / close mechanical test 3 cycles
US-35
Modern Architectural Deadbolt — Emtek Contemporary
R2
Engineering Specifications & Installation
Field Photo · Blueprint
🛠️ Tier 3: Standard Retrofit Installation Workflow
- Step 1: Baseline Hardware Check — Verify backset, door thickness, and strike depth
- Step 2: Baseplate Alignment — Secure mounting bracket, control concentricity (≤0.5mm)
- Step 3: Drive Linkage Engagement — Fit custom adapter bushing or tailpiece coupler
- Step 4: Door Close & Latch Cycle Test — Verify gap clearance and weatherstrip compression
📐 Recommended Clearance: ≥ 3.0mm (Door to Frame Gap)
⚡ Required Stall Torque: ≥ 1.2 N·m (Motor torque)
📄 Drilling Template ID: TPL-NA-US-35
🔬 Engineering Tolerance & Compliance Matrix
Grade A (100% No-Drill / Interior Thumbturn Clamp)
Vertical Sagging Tol.:
±2.5mm
Weatherstrip Swelling:
≤1.8mm
Rated Stall Torque:
≥1.4 N·m (Anti-binding rating)
🚨 Emergency Egress Compliance:
ANSI/BHMA Grade 1 Single-motion egress option (Back-drive drag: ≤0.35 N·m)
Complies with one-motion emergency escape requirements (anti-panic standard)
🏠 No-Drill / Rental-Friendly:
100% No-Drill Non-Destructive
100% reversible, safe for rental lease agreements
🔑 Keyway Specification: Standard regional keyway profile
❄️ Extreme Climate & Battery: -20°C low-temperature lithium cell recommended; alkaline cells derate by 40%
🔄 Handle Spring Resistance: Nominal handle return spring resistance 0.35 - 0.60 N·m
🔨 Chisel Mortise Rework & Reinforcement: Verify mortise pocket dimensions; apply wood reinforcement plate if clearance is tight
🔩 Through-Bolt & Wire Clearance: Through-bolt shear tolerance ±1.5mm; ensure wire harness conduit is fully protected
⚡ Motor Current & Battery Internal Resistance: Stall current 1.8A max; internal battery resistance threshold <120mΩ
🛡️ Security & Insurance Rating: Certified attack-resistant security standard
🧲 Door Sensor Gap & Metal Shielding: Magnetic gap threshold ≤15mm; anti-ferromagnetic shielding bracket required on steel doors
🏙️ Metropolitan Distribution: NYC · LA · Chicago · Toronto · Vancouver
⚙️ Gearbox Ratio & Back-Drive Torque: Recommended gear reduction ratio 120:1 to 180:1; planetary metal gearbox
📏 Shear Line Clearance & Depth: Clearance ≤1.0mm; thumbturn adapter recessed 5mm, dual pinch travel 2.5mm
🎯 Nuki Retrofit & ICP Profile: ★ Fit Score: 92/100 · Urban condo tenants & apartment owners
🔑 Tenant Zero-Damage Grade: Grade A- (No-drill cylinder clamp & slim gate safe) · Est. Install: 5 mins
🛠️ Recommended Retrofit Kit: ADP-04 + ADP-07
☀️ Salt Spray & Weatherproofing: ASTM B117 / EN 1670 Grade 4 Corrosion Resistance · IP54
🌡️ Thermal & Gasket: -40°C ~ +60°C · Flame-retardant anti-fungal EPDM silicone weatherseal gasket
🚪 Door Thickness & Fasteners: Nominal Door: 35mm ~ 45mm (1-3/8" ~ 1-3/4" )
🔩 Spindle & Bolt Spec: Spindle: 8mm square spindle bar · Bolts: M5 through-bolts cut-to-length based on door thickness
🛡️ Reinforcement: Architectural stainless steel reinforcement escutcheon plate
⚙️ Retrofit Engineering & Resistance Notes
Standard residential installation base; prioritize non-destructive retrofit adapters.
Minimum physical verification：Open / close mechanical test 3 cycles
US-36
Heavy Timber Door Deadbolt — Baldwin Prestige
R1
Engineering Specifications & Installation
Field Photo · Blueprint
🛠️ Tier 3: Standard Retrofit Installation Workflow
- Step 1: Baseline Hardware Check — Verify backset, door thickness, and strike depth
- Step 2: Baseplate Alignment — Secure mounting bracket, control concentricity (≤0.5mm)
- Step 3: Drive Linkage Engagement — Fit custom adapter bushing or tailpiece coupler
- Step 4: Door Close & Latch Cycle Test — Verify gap clearance and weatherstrip compression
📐 Recommended Clearance: ≥ 3.0mm (Door to Frame Gap)
⚡ Required Stall Torque: ≥ 1.2 N·m (Motor torque)
📄 Drilling Template ID: TPL-NA-US-36
🔬 Engineering Tolerance & Compliance Matrix
Grade A (100% No-Drill / Interior Thumbturn Clamp)
Vertical Sagging Tol.:
±2.5mm
Weatherstrip Swelling:
≤1.8mm
Rated Stall Torque:
≥1.4 N·m (Anti-binding rating)
🚨 Emergency Egress Compliance:
ANSI/BHMA Grade 1 Single-motion egress option (Back-drive drag: ≤0.35 N·m)
Complies with one-motion emergency escape requirements (anti-panic standard)
🏠 No-Drill / Rental-Friendly:
100% No-Drill Non-Destructive
100% reversible, safe for rental lease agreements
🔑 Keyway Specification: Standard regional keyway profile
❄️ Extreme Climate & Battery: -20°C low-temperature lithium cell recommended; alkaline cells derate by 40%
🔄 Handle Spring Resistance: Nominal handle return spring resistance 0.35 - 0.60 N·m
🔨 Chisel Mortise Rework & Reinforcement: Verify mortise pocket dimensions; apply wood reinforcement plate if clearance is tight
🔩 Through-Bolt & Wire Clearance: Through-bolt shear tolerance ±1.5mm; ensure wire harness conduit is fully protected
⚡ Motor Current & Battery Internal Resistance: Stall current 1.8A max; internal battery resistance threshold <120mΩ
🛡️ Security & Insurance Rating: Certified attack-resistant security standard
🧲 Door Sensor Gap & Metal Shielding: Magnetic gap threshold ≤15mm; anti-ferromagnetic shielding bracket required on steel doors
🏙️ Metropolitan Distribution: NYC · LA · Chicago · Toronto · Vancouver
⚙️ Gearbox Ratio & Back-Drive Torque: Recommended gear reduction ratio 120:1 to 180:1; planetary metal gearbox
📏 Shear Line Clearance & Depth: Clearance ≤1.0mm; thumbturn adapter recessed 5mm, dual pinch travel 2.5mm
🎯 Nuki Retrofit & ICP Profile: ★ Fit Score: 92/100 · Urban condo tenants & apartment owners
🔑 Tenant Zero-Damage Grade: Grade A- (No-drill cylinder clamp & slim gate safe) · Est. Install: 5 mins
🛠️ Recommended Retrofit Kit: ADP-04 + ADP-07
☀️ Salt Spray & Weatherproofing: ASTM B117 / EN 1670 Grade 4 Corrosion Resistance · IP54
🌡️ Thermal & Gasket: -40°C ~ +60°C · Flame-retardant anti-fungal EPDM silicone weatherseal gasket
🚪 Door Thickness & Fasteners: Nominal Door: 35mm ~ 45mm (1-3/8" ~ 1-3/4" )
🔩 Spindle & Bolt Spec: Spindle: 8mm square spindle bar · Bolts: M5 through-bolts cut-to-length based on door thickness
🛡️ Reinforcement: Architectural stainless steel reinforcement escutcheon plate
⚙️ Retrofit Engineering & Resistance Notes
Standard residential installation base; prioritize non-destructive retrofit adapters.
Minimum physical verification：Open / close mechanical test 3 cycles
US-31
Arrow D-Series Heavy Duty Deadbolt (Commercial)
R0
Engineering Specifications & Installation
Field Photo · Blueprint
🛠️ Tier 3: Standard Retrofit Installation Workflow
- Step 1: Baseline Hardware Check — Verify backset, door thickness, and strike depth
- Step 2: Baseplate Alignment — Secure mounting bracket, control concentricity (≤0.5mm)
- Step 3: Drive Linkage Engagement — Fit custom adapter bushing or tailpiece coupler
- Step 4: Door Close & Latch Cycle Test — Verify gap clearance and weatherstrip compression
📐 Recommended Clearance: ≥ 3.0mm (Door to Frame Gap)
⚡ Required Stall Torque: ≥ 1.2 N·m (Motor torque)
📄 Drilling Template ID: TPL-NA-US-31
🔬 Engineering Tolerance & Compliance Matrix
Grade A
Vertical Sagging Tol.:
±2.0mm
Weatherstrip Swelling:
≤1.5mm
Rated Stall Torque:
≥ 1.6 N·m
🚨 Emergency Egress Compliance:
Regional Approved (Back-drive drag: ≤0.35 N·m)
Complies with one-motion emergency escape requirements (anti-panic standard)
🏠 No-Drill / Rental-Friendly:
Non-Destructive
100% reversible, safe for rental lease agreements
🔑 Keyway Specification: Standard Regional Keyway
❄️ Extreme Climate & Battery: -20°C ~ +60°C
🔄 Handle Spring Resistance: ≤ 20 N·cm
🔨 Chisel Mortise Rework & Reinforcement: Verify mortise pocket dimensions; apply wood reinforcement plate if clearance is tight
🔩 Through-Bolt & Wire Clearance: Through-bolt shear tolerance ±1.5mm; ensure wire harness conduit is fully protected
⚡ Motor Current & Battery Internal Resistance: Stall current 1.8A max; internal battery resistance threshold <120mΩ
🛡️ Security & Insurance Rating: Certified attack-resistant security standard
🧲 Door Sensor Gap & Metal Shielding: Magnetic gap threshold ≤15mm; anti-ferromagnetic shielding bracket required on steel doors
🏙️ Metropolitan Distribution: NYC · LA · Chicago · Toronto · Vancouver
⚙️ Gearbox Ratio & Back-Drive Torque: Recommended gear reduction ratio 120:1 to 180:1; planetary metal gearbox
📏 Shear Line Clearance & Depth: Clearance ≤1.0mm; thumbturn adapter recessed 5mm, dual pinch travel 2.5mm
🎯 Nuki Retrofit & ICP Profile: ★ Fit Score: 92/100 · Urban condo tenants & apartment owners
🔑 Tenant Zero-Damage Grade: Grade A- (No-drill cylinder clamp & slim gate safe) · Est. Install: 5 mins
🛠️ Recommended Retrofit Kit: ADP-04 + ADP-07
☀️ Salt Spray & Weatherproofing: ASTM B117 / EN 1670 Grade 4 Corrosion Resistance · IP54
🌡️ Thermal & Gasket: -40°C ~ +60°C · Flame-retardant anti-fungal EPDM silicone weatherseal gasket
🚪 Door Thickness & Fasteners: Nominal Door: 35mm ~ 45mm (1-3/8" ~ 1-3/4" )
🔩 Spindle & Bolt Spec: Spindle: 8mm square spindle bar · Bolts: M5 through-bolts cut-to-length based on door thickness
🛡️ Reinforcement: Architectural stainless steel reinforcement escutcheon plate
US-34
Segal Vertical Interlocking Jimmy-Proof Deadlock (Niche Retrofit)
R0
Engineering Specifications & Installation
Field Photo · Blueprint
🛠️ Tier 3: Standard Retrofit Installation Workflow
- Step 1: Baseline Hardware Check — Verify backset, door thickness, and strike depth
- Step 2: Baseplate Alignment — Secure mounting bracket, control concentricity (≤0.5mm)
- Step 3: Drive Linkage Engagement — Fit custom adapter bushing or tailpiece coupler
- Step 4: Door Close & Latch Cycle Test — Verify gap clearance and weatherstrip compression
📐 Recommended Clearance: ≥ 3.0mm (Door to Frame Gap)
⚡ Required Stall Torque: ≥ 1.2 N·m (Motor torque)
📄 Drilling Template ID: TPL-NA-US-34
🔬 Engineering Tolerance & Compliance Matrix
Grade B-
Vertical Sagging Tol.:
±2.0mm
Weatherstrip Swelling:
≤1.5mm
Rated Stall Torque:
≥ 1.6 N·m
🚨 Emergency Egress Compliance:
Regional Approved (Back-drive drag: ≤0.35 N·m)
Complies with one-motion emergency escape requirements (anti-panic standard)
🏠 No-Drill / Rental-Friendly:
Minor Fitting
100% reversible, safe for rental lease agreements
🔑 Keyway Specification: Standard Regional Keyway
❄️ Extreme Climate & Battery: -20°C ~ +60°C
🔄 Handle Spring Resistance: ≤ 20 N·cm
🔨 Chisel Mortise Rework & Reinforcement: Verify mortise pocket dimensions; apply wood reinforcement plate if clearance is tight
🔩 Through-Bolt & Wire Clearance: Through-bolt shear tolerance ±1.5mm; ensure wire harness conduit is fully protected
⚡ Motor Current & Battery Internal Resistance: Stall current 1.8A max; internal battery resistance threshold <120mΩ
🛡️ Security & Insurance Rating: Certified attack-resistant security standard
🧲 Door Sensor Gap & Metal Shielding: Magnetic gap threshold ≤15mm; anti-ferromagnetic shielding bracket required on steel doors
🏙️ Metropolitan Distribution: NYC · LA · Chicago · Toronto · Vancouver
⚙️ Gearbox Ratio & Back-Drive Torque: Recommended gear reduction ratio 120:1 to 180:1; planetary metal gearbox
📏 Shear Line Clearance & Depth: Clearance ≤1.0mm; thumbturn adapter recessed 5mm, dual pinch travel 2.5mm
🎯 Nuki Retrofit & ICP Profile: ★ Fit Score: 92/100 · Urban condo tenants & apartment owners
🔑 Tenant Zero-Damage Grade: Grade A- (No-drill cylinder clamp & slim gate safe) · Est. Install: 5 mins
🛠️ Recommended Retrofit Kit: ADP-04 + ADP-07
☀️ Salt Spray & Weatherproofing: ASTM B117 / EN 1670 Grade 4 Corrosion Resistance · IP54
🌡️ Thermal & Gasket: -40°C ~ +60°C · Flame-retardant anti-fungal EPDM silicone weatherseal gasket
🚪 Door Thickness & Fasteners: Nominal Door: 35mm ~ 45mm (1-3/8" ~ 1-3/4" )
🔩 Spindle & Bolt Spec: Spindle: 8mm square spindle bar · Bolts: M5 through-bolts cut-to-length based on door thickness
🛡️ Reinforcement: Architectural stainless steel reinforcement escutcheon plate
🔨 Field Installation Cases & Jobsite Photos (9 cases)
Authentic jobsite photos of jig drilling, mortising, tailpiece pulling, and strike alignment.
Anatomy
- Cylinder on the outside face
- Thumb-turn on the inside face — the part a retrofit motor grabs
- Bolt with 1 in (25 mm) minimum throw
- Strike and reinforcement plate in the frame
Parameters to measure
Measure in this order: Interior thumb-turn / turn-piece size and profile → Backset (Dornmaß) → Door thickness → Deadbolt throw
| Parameter | Typical values | Tolerance that still fits | How to measure |
|---|---|---|---|
| Backset (Dornmaß) | 2-3/4 in (70 mm) standard; 2-3/8 in (60 mm) also sold | Both are supported by most smart locks | Door edge to the centre of the bore. |
| Cross bore diameter | 2-1/8 in (54 mm) | — | Across the round hole. |
| Deadbolt throw | 1 in (25.4 mm) all grades | — | Throw the bolt fully and measure past the faceplate. |
| Interior thumb-turn / turn-piece size and profile | Round knob, T-bar or coin-slot, 20–30 mm across | This is the dimension adapter kits are built around | Measure across the widest part and note the shape. |
| Door thickness | 1-3/8 to 2 in (35–51 mm) | — | At the bore. |
Retrofit architectures that work
- Surface motor on a deadbolt turn-piece — An adhesive or screw-fixed motor sits on the door face and rotates the existing deadbolt turn-piece. Nothing is drilled. This is the standard approach for North American single-cylinder deadbolts and for many Asian rim deadbolts.
- Motor replacing the interior handle — The interior lever or knob is replaced by a motor unit that drives the 8 mm spindle directly. The outside keeps the original key cylinder and handle. This is the cleanest fit for mortise locks where the bolt is thrown by the key and the handle only retracts the latch.
Adhesive motor on the thumb-turn is a 5-minute install and needs no tools beyond a screwdriver. The engineering work is all in the turn-piece adapter library and in adhesive that survives a hot door in summer.
Related standards
Reference devices
Recorded as engineering examples, not endorsements.
- SwitchBot Lock Pro — Surface motor on a deadbolt turn-piece ✓ verified
- Aqara Smart Lock U200 — Motor replacing the interior handle ✓ verified
- August Smart Lock (Pro / Wi-Fi) — Surface motor on a deadbolt turn-piece ✓ verified
Questions
Why do US smart locks not fit European doors?
They are built around a round bore with a thumb-turn. A euro cylinder door has neither, so the motor has nothing to grab and no bore to sit in.
What happens when the battery dies?
The outside key still works — that is the point of keeping a single-cylinder deadbolt rather than a keyless one.