Adams Rite MS1850S Straight Bo...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$101.99
$58.73
Adams Rite MS1850S Straight Bolt Mortise Deadlock with Flat Faceplate and 1-1/8" Backset

Adams Rite MS1850S Straight Bolt Mortise Deadlock with Flat Faceplate and 1-1/8" Backset

(No reviews yet) Write a Review

Model: MS1850S-320-628
Selected Finish is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$101.99
$58.73
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Adams Rite MS1850S Straight Bolt Mortise Deadlock with Flat Faceplate and 1-1/8" Backset

Maximum Security Deadlock Solution for Commercial Applications

The Adams Rite MS1850S straight bolt mortise deadlock delivers maximum security performance with a flat faceplate design and precision 1-1/8" backset configuration. This commercial-grade deadlock features a robust 1-13/32" throw for enhanced security engagement and is engineered for demanding applications requiring reliable after-hour security and convenient traffic control during business hours.

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

  1. Review manufacturer specifications and verify door preparation requirements including door thickness, mortise pocket dimensions, and compatibility with existing hardware.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces for proper deadlock alignment.
  3. Prepare door mortise pocket to accommodate the deadlock body, ensuring proper depth and clearance for the 1-13/32" throw operation.
  4. Install the deadlock assembly into the prepared mortise pocket and secure mounting hardware per manufacturer torque specifications.
  5. Adjust bolt alignment and strike plate positioning to ensure smooth operation and proper engagement throughout the full throw range.
  6. Test deadlock operation to verify proper function, security engagement, and smooth operation. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Choose Adams Rite Quality?

Adams Rite mortise deadlock products deliver professional-grade reliability with heavy-duty construction engineered for demanding commercial applications. The precision 1-1/8" backset and extended 1-13/32" throw provide maximum security performance where dependable protection is essential. Built for consistent operation in high-traffic commercial environments requiring both security and operational convenience.

Manufacturer Resources

Adams Rite Product Catalog

Product Specs

Product Group:
Parts and Accessories
Product Subgroup:
Parts and Accessories
Commercial/Residential:
Commercial
Subcategory:
Parts and Accessories
Product Category:
Parts and Accessories
Department:
Door Hardware
Product Type:
Parts and Accessories

Adams Rite MS1850S-320-628 – Frequently Asked Questions

1) What cylinder do I need to order with an Adams Rite MS1850S deadlock?
A mortise cylinder with an Adams Rite MS cam, 1 inch length and 1-5/32 inch diameter. Any standard MS cam mortise cylinder works. The lock body ships without one, so the cylinder is a separate line on the order, and that's where you set the keyway and keying to match the rest of the building.
2) Will a 1-13/32 inch deadbolt throw reach my existing storefront jamb strike?
The 1-13/32 inch throw is long enough for the deep engagement a narrow stile jamb needs, but it only works if the strike is prepped for it. If you're swapping into an opening that had a shorter-throw hookbolt or a deadlatch, the existing jamb cutout usually won't take the straight bolt and you'll need to reprep the jamb and set a strike for the 1-1/8 inch backset centerline. Check the jamb before you order, not after.
3) Can I standardize MS1850S deadlocks across all the storefront doors in my building?
Yes, and that's a common way to buy it. Because the lock is field reversible and takes any standard MS cam mortise cylinder, one lock body covers both handings and you key every door alike or to a master through the cylinders. The thing to verify door by door is the backset: this configuration is 1-1/8 inch, and Adams Rite also builds a 1-1/2 inch backset. Mixed stile depths across a building mean mixed backsets, and the wrong one won't line up on the prep.
4) Can a GMS SFIC straight mortise housing be used as the cylinder in an Adams Rite MS1850S deadlock?
No. The Adams Rite MS1850S straight bolt mortise deadlock accepts any standard Adams Rite MS cam mortise cylinder, in the standard 1 inch length, 1-5/32 inch diameter mortise size. The GMS ICM7-ST is a Best SFIC straight mortise housing, 7-pin, with a Yale cam, so its cam does not match what the MS1850S bolt mechanism is driven by. If a small format interchangeable core keyway is required on a narrow stile aluminum door, the core has to sit in an MS cam mortise housing rather than the Yale cam housing.
5) For an all glass door, is the Adams Rite MS1850S the right deadlock or is a Codelocks glass door part needed?
The Adams Rite MS1850S is built for narrow stile aluminum doors, where the lock body is mortised into the stile and the bolt throws 1-13/32 inches into the jamb. A frameless glass door has no stile to mortise. For that opening the Codelocks CL4000-RSB glass door strike box is the companion part, suitable for use with the CL4000 or CL4500 glass door locks. Confirm the door has an aluminum stile deep enough for a 1-1/8 inch or 1-1/2 inch backset before specifying the MS1850S.
6) Do I have to specify handing when ordering an MS1850S mortise deadlock?
No. The MS1850S is field reversible, so one part number covers left and right hand openings and you set it at install. For a property manager stocking spares across a run of storefront doors, that means one lock on the shelf instead of two.
7) Does the MS1850S faceplate work on a beveled or radius door edge?
Yes. The faceplate is adaptable for flat, radius, or beveled door edges. This configuration is the flat faceplate version, which is what most aluminum storefront stiles take.
8) Should I use a straight bolt deadlock or a hookbolt on my storefront door?
Straight bolt, like the MS1850S, is the one to use on a single door into a jamb or a door with a fixed keeper. The bolt drives straight out and dead-locks positively. A hookbolt version is what you go to on sliding doors or on a pair of doors where the bolt has to grab a keeper it can't simply push into, since a straight bolt has nothing to bite on there. Same lock body family and same MS cam cylinder either way, so the decision is about the opening, not the keying.
9) Does the MS1850S deadlock come with a strike or a cylinder?
Neither. The MS1850S is the lock body with its faceplate. The mortise cylinder (1 inch, 1-5/32 inch diameter, MS cam) is ordered separately, and so is the jamb strike sized for your frame. Budget both into the job. If you're building cylinders yourself, small format IC housings like the GMS ICM7-ST straight mortise housing are a different cam standard, so don't assume an SFIC housing off the shelf will drive this bolt.
10) Will an ABH roller latch hold a narrow stile aluminum door the way an Adams Rite MS1850S does?
No, they do the opposite jobs. The Adams Rite MS1850S is a mortise deadlock with a pivoting deadbolt and a 1-13/32 inch throw, keyed through an MS cam mortise cylinder for positive dead-locking after hours. The ABH 1890 is a roller latch with a full lip cast strike and 5/16 inch adjustable projection, and the ABH 1895 is a roller latch with a T strike and 1/2 inch adjustable projection; a roller latch holds a door closed against drafts and light push, with no key and no bolt engagement. On an opening that has to be secured after hours, the deadlock is the part that does it; a roller latch is what you add when a door only needs to stay shut.
11) Does the Adams Rite MS1850S give a classroom function, or is an electrified operator needed?
The Adams Rite MS1850S is a key operated straight bolt mortise deadlock with a field reversible pivoting bolt; it locks and unlocks by key through an MS cam cylinder and has no lever, no latch, and no credential control. Where an opening needs classroom function, the ACSI 8500 Gemini operator is built as a classroom function operator for a Corbin Russwin 2000 Series mortise lever lock body, which is a lever lockset application rather than a narrow stile aluminum deadlock. Pair the MS1850S with a separate exit device or pull when the opening also needs a latching, operable side.
12) What finishes does the Adams Rite MS1850S deadlock come in?
Three anodized finishes are orderable: 313 Dark Bronze Anodized, 335 Black Anodized, and 628 Clear Anodized. Those are the storefront-matching finishes, so pick the one that matches the door frame rather than the pull. Adams Rite lists the MS1850S family more broadly in US3 bright brass, US4 satin brass, US10B dark bronze, US32 bright stainless, and US32D satin stainless.
13) Is the MS1850S deadbolt stainless or brass?
The deadbolt is built in stainless steel or solid brass. Either one is the security-critical part of the lock, the piece sitting in the jamb, and both are specified for commercial duty. The anodized finish you pick applies to the faceplate side of the assembly.
How fast can I get the Adams Rite MS1850S-320-628 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Adams Rite MS1850S-320-628 come with a warranty?
Absolutely. The Adams Rite MS1850S-320-628 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Adams Rite MS1850S-320-628?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Adams Rite MS1850S-320-628 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!