The MS-1891-3025-628 from Adams Rite is a Lockset for 1-1/8″ Backset in Clear. The MS-1891-3025-628 series Deadlock/Deadlatch provides a maximum security deadlock for after hour and traffic control convenience during business hours. It operates in such a way that the 360 degree turn of key or thumb turn throws or retracts the hook-shaped deadlock and then 120 degree further turn retracts latch bolt as well. Cylinder may accept any standard 1-5/32″ diameter mortise cylinder or thumb turn from either or both sides. Handle retracts spring-loaded latchbolt only.
Adams Rite MS-1891-3025-628 Lockset Features
- Clear Anodized finish: Provides a sleek and modern look while enhancing corrosion resistance.
- Cylinder Backset: 1-1/8″, ensuring compatibility with a variety of door types.
- Durable Construction: Case made of stainless steel with corrosion-resistant plating measuring 1″ x 7-3/8″, designed for longevity.
- Standard Stile Lip Length: Fits most standard door configurations for easy installation.
- Radius Faceplate: Measures 1″ x 6-7/8″, offering a clean appearance and secure fit.
- Handed Operation: Available in LH or RHR (Left Hand or Right Hand Reverse), ensuring versatility in door applications.
- Cylinder Not Included: Allows for customization with any standard 1-5/32″ diameter mortise cylinder with MS cam.
- Grade 1 Strength: Meets high security standards, ensuring reliable performance.
- Robust Latchbolt: Made of eight ply laminated stainless steel with 5/8″ x 1-3/8″ dimensions and 13/16″ throw, providing exceptional durability.
- Armored Strike: Features satin stainless steel trim plate with steel mounting plate and dust box for added security.
Adams Rite MS-1891-3025-628 Lockset Specifications
| Feature | Details |
| Finish | Clear Anodized |
| Cylinder Backset | 1-1/8″ |
| Case Material | Stainless Steel with Corrosion-Resistant Plating |
| Case Dimensions | 1″ x 7-3/8″ (depth varies by backset) |
| Stile Lip Length | Standard |
| Faceplate Dimensions | 1″ x 6-7/8″ |
| Operation | Handed – LH or RHR |
| Cylinder Compatibility | Standard 1-5/32″ Diameter Mortise Cylinder with MS Cam |
| Strength Rating | Grade 1 |
| Latchbolt Material | Eight Ply Laminated Stainless Steel |
| Latchbolt Dimensions | 5/8″ x 1-3/8″ with 13/16″ throw |
| Strike Plate | Satin Stainless Steel Trim Plate with Steel Mounting Plate and Dust Box |



















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