Standard Duty Deadlatch 4510 Standard Duty Deadlatches provide flexible traffic control during and after business hours. Function The 4510 Series Standard Duty Deadlatch offers flexibility of tra'c 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 tra'c for healthcare, financial institutions, retail, and other applications that require free entrance at certain times and exit-only at other times. Interchangeable, without stile modification, with any MS1850S Deadlock of same backset and faceplate shape. They do not, however, provide the same maximum security level as the MSDeadlock. Operation Turn key or operate handle or paddle to retract spring-loaded latchbolt. To hold bolt retracted, push it in and secure by reverse turn of key. Lock accepts any standard mortise cylinder with MS cam, available separately. Lock accepts any standard 1" [25.4 mm] length, 1-5/32" [29.4 mm] diameter mortise cylinder with MS cam such as the 4036 Mortise Cylinder or thumbturn such as the 4066 Thumbturn, available separately. Lock accepts cylinder from either or both sides. Features Cylinder Backset 7/8" [22.2 mm], 31/32" [24.6 mm], 1-1/8" [28.6 mm] or 1-1/2" [38.1 mm]. Case Steel with corrosion-resistant plating. Measures 1" x 5-13/16" x depth [25.4 mm x 147.6 mm x depth]. Depth varies by backset see table on back of page. Bolt Holdback While bolt is held fully retracted, a reverse turn of the key retains the bolt, allowing the door to be free swinging Latchbolt All metal with hardened steel internal pins. Handing is reversible without special tools. Measures 1/2" x 1" x 1/2" [12.7 mm x 25.4 mm x 12.7 mm] throw. Auxiliary Bolt All metal. Deadlocks latchbolt to prevent "loiding" or case-knife entry. Faceplate Measures 1" x 6-7/8" [25.4 mm x 174.6 mm]. Strike Standard strike furnished is 4902-01 for flat jamb where door closes flush or nearly flush. Available separately: rad
