Adams Rite S277-10R16-603-MP D...
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Adams Rite S277-10R16-603-MP Deadlatch Paddle Screw Pack, #10-24 x 1" Truss Head Screw with Lockwasher, Zinc Plated

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Model: S277-10R16-603-MP

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

$23.56
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Adams Rite S277-10R16-603-MP Deadlatch Paddle Screw Pack, #10-24 x 1" Truss Head Screw with Lockwasher, Zinc Plated

The Adams Rite S277-10R16-603-MP is a genuine OEM replacement screw pack designed specifically for the Adams Rite 4591 Deadlatch Paddle assembly. This installation accessory includes a #10-24 x 1" truss head screw paired with a lockwasher, finished in a zinc plated coating for corrosion resistance. Engineered as a commercial-grade hardware component, this screw pack ensures a secure and reliable fastening solution when servicing or assembling Adams Rite deadlatch paddle hardware.

Key Features

  • Precise Thread Specification: #10-24 x 1" thread sizing ensures exact compatibility with the Adams Rite 4591 Deadlatch Paddle assembly for a secure, rattle-free fit.
  • Truss Head Design: Low-profile truss head profile provides broad bearing surface and smooth, flush seating against hardware components during installation.
  • Integrated Lockwasher: Included lockwasher resists loosening from vibration and repeated use, maintaining fastener integrity over the service life of the hardware.
  • Zinc Plated Finish: Zinc plating provides corrosion resistance suitable for interior commercial door hardware environments.
  • Genuine Adams Rite Part: OEM-sourced component engineered to meet Adams Rite manufacturing tolerances for the 4591 Deadlatch Paddle series.
  • Commercial-Grade Application: Rated and intended for commercial door hardware installations requiring dependable, code-compliant fastening.
  • Simplified Servicing: Packaged as a complete screw and lockwasher set, making field replacements and hardware servicing straightforward for installers and technicians.

Technical Specifications

  • Department: Door Hardware
  • Product Category: Mechanical Locks
  • Product Group: Parts and Accessories
  • Subcategory: Parts and Accessories
  • Product Subgroup: Parts and Accessories
  • Product Type: Screw Pack
  • Parts and Accessories Type: Installation Accessories
  • Commercial/Residential: Commercial
  • Product Model: S277-10R16-603-MP
  • Features: Adams Rite Parts

Typical Applications

  • Replacement fastener for Adams Rite 4591 Deadlatch Paddle assemblies
  • Commercial Office Building Door Hardware Servicing
  • Educational Facility Maintenance and Repair
  • Healthcare Facility Door Hardware Upkeep
  • Retail Establishment Lock Hardware Maintenance
  • Industrial and Warehouse Facility Door Hardware Repair
  • Government and Municipal Building Hardware Servicing

Why Adams Rite S277?

Adams Rite replacement parts are manufactured to the same tolerances as original production hardware, ensuring consistent performance and fit in the field. The S277-10R16-603-MP screw pack delivers dependable fastening integrity for the 4591 Deadlatch Paddle, making it the preferred choice for commercial installers and maintenance technicians who require genuine OEM components.

Manufacturer Resources

Product Specs

Department:
Door Hardware
Product Category:
Mechanical Locks
Product Group:
Parts and Accessories
Subcategory:
Parts and Accessories
Product Subgroup:
Parts and Accessories
Product Type:
Screw Pack
Parts and Accessories Type:
Installation Accessories
Commercial/Residential:
Commercial
Product Model:
S277-10R16-603-MP
Features:
Adams Rite Parts

Adams Rite S277-10R16-603-MP – Frequently Asked Questions

1) Can a Corbin Russwin ML2000 screw pack be used in place of the Adams Rite S277-10R16-603-MP on a 4591 deadlatch paddle?
No. The Adams Rite S277-10R16-603-MP is an OEM screw pack built specifically for the Adams Rite 4591 Deadlatch Paddle assembly, with a #10-24 x 1 inch truss head screw and lockwasher in a zinc plated finish. The Corbin Russwin 433F77 is a screw pack for the ML2000 M and P escutcheon, and the Corbin Russwin 429F31 is a screw packet for the ML2000 N escutcheon - both are sized and intended for Corbin Russwin ML2000 mortise lock trim, not for an Adams Rite paddle. The thread size and screw length are what tie the S277 to the 4591 paddle, so keep the Adams Rite pack for that opening.
2) Does the Adams Rite paddle screw pack come with the lockwasher, or do I order that separately?
The lockwasher is in the pack. Each S277 pack is a matched set of the #10-24 x 1 inch truss head screw plus its lockwasher, so a service tech carries one part number to the door rather than sourcing the washer loose. The lockwasher is what keeps the paddle fastener from backing out under the vibration of a high-cycle storefront door.
3) Can I just use a generic #10-24 screw from the hardware store on a 4591 paddle instead?
The thread pitch will match, but two things on the OEM part matter on this application. First, the truss head gives a wide, low-profile bearing surface that seats flush against the paddle hardware; a pan or round head can stand proud and interfere with the paddle throw. Second, the 1 inch length is set to the 4591's mounting depth. A longer screw bottoms out or protrudes, a shorter one does not get full thread engagement.
4) Will an Adams Rite deadlatch paddle screw pack work on a Corbin Russwin mortise lock?
No. The S277 pack is cut for the Adams Rite 4591 paddle and nothing else. For Corbin Russwin ML2000 mortise locks the screw packs are brand specific: the 433F77 covers M and P escutcheons, the 429F31 covers the N escutcheon, the 425F86-8 is the 8-32 x 3/8 inch flat screw, and the 206F57-8 is the strike combo screw. Match the pack to the lock family you are servicing.
5) What is the difference between ordering a screw pack like the Adams Rite S277-10R16-603-MP and ordering an individual screw?
The Adams Rite S277-10R16-603-MP is supplied as a complete set - a #10-24 x 1 inch truss head screw together with its lockwasher - so a field replacement on a 4591 Deadlatch Paddle goes back together with the anti-vibration washer included. Some comparable fasteners are sold as a single loose screw instead: the Corbin Russwin 425F86-8 is a flat screw in 8-32 x 3/8 inch, and the 206F57-8 is a strike combo screw. If you want the washer in the bag rather than sourced separately, the packaged set is the one to order.
6) Is the Adams Rite S277-10R16-603-MP the right pack for fastening a strike?
No - the S277-10R16-603-MP is the paddle fastener for the Adams Rite 4591 Deadlatch Paddle assembly, using a #10-24 x 1 inch truss head screw whose low-profile head seats flush against the paddle hardware. Strike fastening is a different part: the Corbin Russwin 206F57-8 is a strike combo screw for the ML2000. Match the fastener to the component being mounted rather than assuming one screw covers both the trim and the strike.
7) For a commercial building where I am standardizing spare fasteners, does the Adams Rite S277-10R16-603-MP cover mortise lock trim as well?
It does not. The Adams Rite S277-10R16-603-MP is a commercial-grade installation accessory dedicated to the Adams Rite 4591 Deadlatch Paddle, in a zinc plated 603 finish. Mortise lock trim on Corbin Russwin ML2000 hardware takes its own packs - the 429F31 for the N escutcheon and the 433F77 for the M and P escutcheons, both Grade 1. A facility running both aluminum-door deadlatch paddles and ML2000 mortise locks needs both families on the shelf.
8) What finish is the Adams Rite S277 screw pack, and will it hold up in an exterior storefront door?
It is supplied in 603, zinc plated. Zinc plating gives corrosion resistance for interior commercial door hardware environments, which is how the part is specified. On a fully weather-exposed opening you would want a stainless or coated fastener instead. Zinc plated is the only finish the S277 pack is built in.
9) Is this an Adams Rite part or an aftermarket copy?
Genuine Adams Rite, OEM sourced and made to Adams Rite tolerances for the 4591 Deadlatch Paddle series. For facilities standardizing on Adams Rite exit and deadlatch hardware, that matters when a spec or a maintenance contract calls for OEM components rather than equivalents.
How fast can I get the Adams Rite S277-10R16-603-MP 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 S277-10R16-603-MP come with a warranty?
Absolutely. The Adams Rite S277-10R16-603-MP 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 S277-10R16-603-MP?
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
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