The 4531-36-202-628 from Adams Rite is a standard duty deadlatch with radius faceplate in clear anodized. The 4531 series Standard Duty Deadlatch offers maximum flexibility of traffic control during and after business hours. A reverse turn of the key (while bolt is held full retracted) retains the bolt and thus allowing the door to be free swinging with two-way traffic for hospitals, banks, stores, and other buildings which require free entrance at certain times and exit-only at other times. The 4530 series deadlatches are perfectly designed to fit without alteration, the stile cutout for older MS1850 Deadlocks and 4250 Deadlatches of same backset. However, they do not provide the same maximum security level as the MS Deadlock and should not be considered an equivalent replacement.
Adams Rite 4531-36-202-628 Key Features
- Clear Anodized Faceplate Finish: Provides a sleek, modern look while ensuring durability and resistance to corrosion.
- Aluminum Construction: Lightweight yet strong, ensuring long-lasting performance in high-traffic environments.
- Reversible Handing: RH or LHR operation is easily reversible without special tools, allowing for versatile installation options.
- Cylinder Backset: 1-1/8″ backset accommodates standard installations, ensuring compatibility with existing door hardware.
- Corrosion-Resistant Steel Case: Constructed with corrosion-resistant plating, measuring 1″ x 5-13/16″, for enhanced durability.
- Grade 1 Standard: Meets high standards for commercial security, ensuring reliability and performance.
- Standard Mortise Cylinder Compatibility: Uses any standard mortise cylinder with MS dimensioned cam for easy replacement.
- Faceplate Dimensions: Measures 1-1/4″ x 7-13/32″, designed to fit standard door cutouts.
- Durable Latchbolt: Metal construction with hardened steel internal pins and a 1/2″ x 1″ x 1/2″ throw ensures robust locking action.
- Mortised Strike Size: Includes a 4902 strike size of 2-5/8″ for secure door alignment.
- All Metal Auxiliary Bolt: Prevents “loiding” or case-knife entry, enhancing overall security.
- Radius Strike Shape: Features a standard stiles lip length for compatibility with various door designs.
- Paired Door Compatibility: Radius strike designed for opposite stile in paired doors, providing flexibility in installation.
Adams Rite 4531-36-202-628 Detailed Specifications
| Feature | Details |
| Faceplate Finish | Clear Anodized |
| Material | Aluminum |
| Handing | Reversible RH or LHR |
| Cylinder Backset | 1-1/8″ |
| Case Dimensions | 1″ x 5-13/16″ (depth varies by backset) |
| Grade | Grade 1 Standard |
| Cylinder Compatibility | Standard mortise cylinder with MS dimensioned cam |
| Faceplate Size | 1-1/4″ x 7-13/32″ |
| Latchbolt | Metal with hardened steel internal pins, 1/2″ x 1″ x 1/2″ throw |
| Strike Size | Mortised (4902) 2-5/8″ |
| Auxiliary Bolt | All metal to prevent “loiding” |
| Strike Shape | Radius |
| Compatibility | Paired doors with opposite stile radius strike |



















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