SS303 solid cast
M51 Electronic Mortise Lock ANSI/BHMA A156.13 F20 Apartment Corridor Door Lock
The
HARDWOOD M51 Electronic Mortise Lock combines intelligent electronic access
control with the proven durability of the DD Series mortise lock body. Designed
with escutcheon trim, it integrates modern electronic functions with a robust
mechanical locking platform to provide security, convenience, and long-term
reliability.
Supporting fingerprint, PIN code, RFID credentials, and mechanical key override, the M51 offers flexible entry options for a wide range of users and access requirements. Its stainless steel construction, tempered glass touch screen, and four through-bolts reinforce the trim for dependable performance in demanding environments.
The
M51 features an escutcheon trim electronic design integrated with the DD Series
mortise lock body. It combines electronic credential management with the
mechanical strength of a commercial mortise lock, providing a unified solution
for controlled access and everyday door operation.
The
lock supports multiple access methods, including fingerprint, PIN code, RFID
credentials, and mechanical key override. Its tempered glass touch screen
provides a modern user interface, while four through-bolts reinforce the trim
to improve mounting stability and resistance to tampering.
Designed
to meet ANSI/BHMA A156.13 requirements for mortise locks and ANSI/BHMA A156.25
requirements for electrified locking devices, the M51 is suited to commercial
and residential projects requiring convenient access management, durable
construction, and contemporary architectural styling.
Application
Escutcheon
Trim Design:
Integrated
electronic escutcheon trim combines access control functions and door hardware
in a coordinated architectural design.
Multiple
Access Methods:
Supports
fingerprint, PIN code, RFID credentials, and mechanical key override for
flexible and convenient entry.
DD
Series Mortise Lock Body:
Built
on the DD Series mortise lock platform, combining electronic access control
with robust mechanical locking performance.
Standards
Compliance:
Designed
to meet ANSI/BHMA A156.13 requirements for mortise locks and ANSI/BHMA A156.25
requirements for electrified locking devices.
Tempered
Glass Touch Screen:
Provides
a modern, easy-to-use interface with a clean architectural appearance.
Reinforced
Escutcheon Trim:
Four
through-bolts secure the trim to enhance mounting stability and resistance to
vandalism.
Stainless
Steel Construction:
Provides
strength, corrosion resistance, and long-term durability for demanding
commercial applications.
Keyless
Entry Convenience:
Multiple
electronic credentials reduce reliance on conventional keys and support
flexible user access management.
Commercial-Grade
Durability:
Designed
for dependable operation in high-traffic commercial and residential
environments.
Smooth
Lever Operation:
Provides
convenient mechanical door operation alongside electronic access control.
Reversible
Handing:
Accommodates
different door handing requirements for greater installation flexibility.
Metal
and Wood Door Compatibility:
Suitable
for compatible metal and wood doors, subject to door preparation and
installation requirements.
Modern
Architectural Appearance:
Combines electronic functionality with clean escutcheon styling suited to contemporary commercial and residential interiors.
| Picture | Model no. | ANSI no. | Function | Description | Lever | Cylinder | Thumb turn | Emergency turn |
|---|---|---|---|---|---|---|---|---|
|
M51 | F20 | Apartment Corridor Door Lock | Lever latch both sides; outside lever disable by non-key means. Deadbolt by key outside or turn inside; key operates both bolts. Inside lever retracts both; outside stays locked. Latch deadlocks when disabled or deadbolt thrown; re-enabled when deadbolt is retracted. | ✓ | ✓ | ✓ |
| Door preparation | ANSI/BHMA A156.115W or A156.115 |
|---|---|
| Door thickness | For doors 1-3/4" (44mm) to 2-1/4" (57mm) thick standard |
| Stile | 4-1/2" (114mm) minimum stile |
| Backset | *Standard backset 2-3/4" (70mm) |
| CTC | Cylinder to lever distance 3-7/8" (98mm) |
| Function | ANSI F20 |
| Lock case | SS304, thickness 3/32" |
| Latch bolt | SS303, A156.13 Grade 1 latch bolt projection 3/4", 2 pcs anti-fraction |
| Auxiliary latch bolt | SS304, 3/8" projection, non-handed |
| Dead bolt | 17-4PH stainless steel, A156.13 Grade 1 dead bolt projection 1” |
| Face plate | SS304, ANSI/BHMA A156.115 8" × 1-1/4" × 1/16" (203 × 31.7 × 2.1mm) |
| Cylinder | Φ1-1/8" cylinder, C28000 brass, 6 pin, 3 keys, satin nickel face |
| Strike | SS304, 4-7/8" ANSI curved lip strike, thickness 1/8" (3mm) |
| Strike box | PA66 |
| Electronic trim | SS303 cast escutcheon trim |
| Touch screen | Tempered glass |
| Battery | 4 AA batteries for 2 years normal life |
| Emergency power | USB interface |
| Access methods | Finger print, NFC, PIN code, key |
| Handing | Non-handed, Field reversible latch bolt |
| Finishes | US32D |
| ANSI/BHMA | ANSI/BHMA A156.13 certified Grade 1 |
| UL listed | UL/cUL 10C listed for 3 hour fire rating |
| Trim type | Escutcheon trim |
| Material | SS303 cast |
| Thickness | 1/8"~3/8" (3.6~9.6mm) |
| Width | 2-7/8" (78mm) |
| Height | 11-1/16" (281mm) |
| Projection | 2-1/16" (52mm) |
SS303 solid cast
1-3/4"×3/8"(44×10mm)
SS303 cast US32D
Φ1-1/8"×1-13/16" (Φ29×46.7mm)
C28000 brass body, 6 pins
Satin nickel cylinder face
3 pcs of C26000 brass keys, nickel plated.
4-7/8" (124mm) ANSI curved lip strike SS304.
1-3/16" (30mm) curved lip from center of screw holes to end of lip.
Strike box 4-3/4" × 1-1/8" × 1" (120×29×25mm), PA66
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