Adams Rite MS1850S Series Laminated Stainless Steel Deadlock with 7/8" Backset
Maximum Security Deadlock for Narrow Stile Aluminum Doors
The Adams Rite MS1850S Series MS® Deadlock delivers maximum security for single leaf narrow stile aluminum doors with its massive laminated stainless steel bolt measuring nearly 3" long. This Grade 1 commercial deadlock features a 7/8" backset and utilizes an uncomplicated pivot mechanism for reliable operation. The eight-ply laminated stainless steel bolt with alumina-ceramic core provides exceptional resistance to forced entry attempts and hacksaw attacks.
Professional Features & Benefits
- Pivoting deadbolt — positive dead-locking action
- For narrow stile aluminum doors
- Accepts any standard Adams Rite MS® cam mortise cylinder
- Backset: 1-1/8" or 1-1/2"
- Stainless steel or solid brass deadbolt
- Adaptable faceplate for flat, radius, or beveled door edge
- Field-reversible
Technical Specifications
- Door Application: Narrow stile aluminum doors
- Backset: 1-1/8" [28.6 mm] or 1-1/2" [38.1 mm]
- Cylinder: Standard 1" length, 1-5/32" diameter mortise with MS® cam
- Handing: Field reversible
- Faceplate: Flat, radius, or beveled adaptable
- Finishes: US3 (605) Bright Brass, US4 (606) Satin Brass, US10B (613) Dark Bronze, US32 (629) Bright Stainless, US32D (630) Satin Stainless
Installation & Operation
- Review manufacturer specifications and verify door preparation requirements including door thickness, stile width, and proper backset measurement for this 7/8" backset configuration.
- Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces for the 1" x 6" case dimensions.
- Prepare door by cutting strike slot in metal jamb per catalog specifications and drilling required holes for the 1" x 6-7/8" faceplate mounting.
- Install deadlock case and secure faceplate to door with provided mounting screws per manufacturer torque specifications.
- Install compatible mortise cylinder (such as 4036 Mortise Cylinder) or thumbturn (such as 4066 Thumbturn) available separately.
- Test 360° key or thumbturn operation to verify proper bolt projection and retraction, confirming key removal only occurs in positively locked or unlocked positions. Refer to manufacturer documentation for complete installation details and troubleshooting.
Professional Applications
- Commercial Office Buildings
- Educational Facilities
- Healthcare Institutions
- Industrial and Warehouse Facilities
- Government and Municipal Buildings
- Multi-Tenant Residential Properties
- Institutional Security Applications
Why Choose Adams Rite Quality?
Adams Rite MS1850S Series deadlocks deliver professional-grade security with eight-ply laminated stainless steel construction and alumina-ceramic core protection rated as the industry standard for narrow stile aluminum doors. The 5-year manufacturer warranty and Grade 1 commercial rating provide confidence for demanding commercial applications. Engineered for maximum security where dependable performance and resistance to forced entry are essential.
Manufacturer Resources
Product Specs
- Product Group:
- Sliding Door and Barn Door Hardware
- Series:
- MS1850S Series
- Grade:
- Grade 1
- Cylinder Included:
- No
- Warranty:
- 5 Year
- Product Subgroup:
- Deadlocks
- Subcategory:
- Deadlocks
- Commercial/Residential:
- Commercial
- Tags:
- ms1850s, ms1850s deadlock
- Product Model:
- MS1850S
- Product Dimension:
- 1" x 6" x depth
- Face Plate:
- 1"
- Door Strike:
- Trim plate
- Product Category:
- Sliding Door and Barn Door Hardware
- Backset (Distance):
- 7/8"
- Department:
- Door Hardware
- Product Type:
- Deadlocks