Function: The 4510 Standard Duty Deadlatch offers flexibility of traffic control during and after business hours. A reverse turn of the key while the bolt is held retracted retains the bolt to allow two-way traffic for hospitals, banks, stores, and other buildings which require free entrance at certain times and exit-only at other times. Interchangeable, without stile modification, with any MS1850A or MS1850S
Operation: Turn key or operate handle to retract spring-loaded latchbolt. To hold bolt retracted, push it in and secure by reverse turn of key. Uses any standard mortise cylinder with MS® dimensioned cam.
Specifications:
Bolt Holdback: While bolt is held fully retracted, a reverse turn of the key retains the bolt, allowing the door to be free swinging.
Case: Measures 1” x 5-13/16” x depth. Depth varies by backset (see table on catalog page). Steel with corrosion-resistant plating.
Latchbolt: 1/2” x 1” x 1/2” throw. All metal with hardened steel internal pins. Handing is reversible without special tools.
Auxiliary Bolt: All metal. Deadlocks latch bolt to prevent “loiding” or case-knife entry.
Strikes: Standard strike furnished is 4902-01 for flat jamb where door closes flush or nearly flush. Available separately: radius strike for opposite stile in paired doors; longer strike (4901) to cover slot strike of MS lock; long lip strikes for centerhung doors.
Cylinder Cam: Operable by any standard mortise cylinder with MS® cam, dimensioned as shown. Cylinders with MS® cams can be readily obtained from most cylinder manufacturers. See CYLINDERS for cylinder make, thumbturn and trim ring information.
Standard Package: Individually boxed with strike, and machine screws for mounting.
Cylinders, paddles, and handles available separately.
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Function: The 4510 Standard Duty Deadlatch offers flexibility of traffic control during and after business hours. A reverse turn of the key while the bolt is held retracted retains the bolt to allow two-way traffic for hospitals, banks, stores, and other buildings which require free entrance at certain times and exit-only at other times. Interchangeable, without stile modification, with any MS1850A or MS1850S
Operation: Turn key or operate handle to retract spring-loaded latchbolt. To hold bolt retracted, push it in and secure by reverse turn of key. Uses any standard mortise cylinder with MS® dimensioned cam.
Specifications:
Bolt Holdback: While bolt is held fully retracted, a reverse turn of the key retains the bolt, allowing the door to be free swinging.
Case: Measures 1” x 5-13/16” x depth. Depth varies by backset (see table on catalog page). Steel with corrosion-resistant plating.
Latchbolt: 1/2” x 1” x 1/2” throw. All metal with hardened steel internal pins. Handing is reversible without special tools.
Auxiliary Bolt: All metal. Deadlocks latch bolt to prevent “loiding” or case-knife entry.
Strikes: Standard strike furnished is 4902-01 for flat jamb where door closes flush or nearly flush. Available separately: radius strike for opposite stile in paired doors; longer strike (4901) to cover slot strike of MS lock; long lip strikes for centerhung doors.
Cylinder Cam: Operable by any standard mortise cylinder with MS® cam, dimensioned as shown. Cylinders with MS® cams can be readily obtained from most cylinder manufacturers. See CYLINDERS for cylinder make, thumbturn and trim ring information.
Standard Package: Individually boxed with strike, and machine screws for mounting.
Cylinders, paddles, and handles available separately.
", "features": [ "313 Dark Bronze Anodized Finish", "LH or RHR", "Flat faceplate", "Cylinder not included", "Standard Duty" ] } ] }, "metadata": { "generated_date": "2025-12-06", "last_updated": "2025-12-06", "data_sources": [ "Zoro", "Amazon" ], "completeness": 0.9, "version": "1.0" } } }