Adams Rite 28-0008-MP 4550 MS ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
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Adams Rite 28-0008-MP 4550 MS Deadlock Exit Indicator Spring Replacement Part

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Model: 28-0008-MP

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

$29.96
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Adams Rite 28-0008-MP 4550 MS Deadlock Exit Indicator Spring Replacement Part

The Adams Rite 28-0008-MP is a genuine OEM replacement Exit Indicator Spring designed specifically for the Adams Rite 4550 MS Deadlock lever assembly. This commercial-grade component ensures the exit indicator mechanism functions reliably, maintaining proper spring tension for accurate lock status indication. Engineered as a direct replacement part for the 4550 MS Deadlock series, it restores original performance to the host device with a precise fit and consistent operation.

Key Features

  • OEM Replacement Compatibility: Designed as a direct replacement component for the Adams Rite 4550 MS Deadlock lever assembly, ensuring a precise fit without modification.
  • Exit Indicator Function: Restores proper spring tension to the exit indicator mechanism, supporting accurate visual lock status indication on the 4550 MS Deadlock.
  • Commercial-Grade Construction: Built to the Adams Rite quality standard for commercial door hardware applications where dependable performance is required.
  • Genuine Adams Rite Part: Sourced as an authentic Adams Rite component, maintaining the integrity and performance of the original 4550 MS Deadlock installation.
  • Easy Integration: Drop-in replacement designed to work within the existing lever part assembly of the 4550 MS Deadlock without additional adapters or modifications.

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: Rings, Spindles and Springs
  • Parts and Accessories Type: Replacement Parts
  • Commercial/Residential: Commercial
  • Product Model: 28-0008-MP
  • Features: Adams Rite Parts

Typical Applications

  • Commercial Office Buildings with Adams Rite 4550 MS Deadlock Installations
  • Retail Storefronts Requiring Deadlock Mechanism Maintenance
  • Educational Facilities with Adams Rite Locking Hardware
  • Healthcare Institutions Servicing Existing Adams Rite Hardware
  • Government and Municipal Buildings Using 4550 MS Deadlock Systems
  • Industrial and Warehouse Facilities Maintaining Commercial Door Hardware
  • Multi-Tenant Residential and Mixed-Use Properties with Commercial Door Locks

Why Adams Rite 4550?

Adams Rite is a trusted name in commercial door hardware, and the 28-0008-MP Exit Indicator Spring reflects the same precision engineering found throughout the 4550 MS Deadlock product line. By using genuine Adams Rite replacement components, facilities managers and installers can restore original device performance and maintain the reliability expected in demanding commercial environments.

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:
Rings, Spindles and Springs
Parts and Accessories Type:
Replacement Parts
Commercial/Residential:
Commercial
Product Model:
28-0008-MP
Features:
Adams Rite Parts

Adams Rite 28-0008-MP – Frequently Asked Questions

1) What does the Adams Rite 28-0008-MP spring actually do?
It's the exit indicator spring out of the Adams Rite 4550 MS Deadlock lever assembly. Its job is to hold tension on the exit indicator mechanism so the lock's status shows correctly. When the indicator stops returning or reads wrong, this spring is the part that gets replaced, not the whole deadlock.
2) Will the 28-0008-MP fit my Adams Rite 4550 deadlock without modification?
Yes. The 28-0008-MP is the OEM component for the 4550 MS Deadlock lever assembly and drops into the existing assembly with no adapters or rework. It is specific to that assembly, so if your hardware is a different Adams Rite series, this is not the spring for it.
3) Can a Corbin Russwin swivel spindle pin and set screw be used in place of the Adams Rite 28-0008-MP exit indicator spring?
No. The Adams Rite 28-0008-MP is an exit indicator spring made as a direct OEM replacement inside the Adams Rite 4550 MS Deadlock lever assembly, where it restores spring tension to the exit indicator mechanism. The Corbin Russwin Swivel Spindle Pin X Set Screw is a spindle pin with a set screw, a retention part for a spindle rather than an indicator spring, and it is listed for 1-3/4 inch doors. The two parts do different jobs in different assemblies, so one will not stand in for the other in a 4550 MS Deadlock.
4) Is this an aftermarket spring or a genuine Adams Rite part?
Genuine Adams Rite. The 28-0008-MP is sourced as an authentic OEM component for the 4550 MS Deadlock, which matters on a small tensioning part where a near-copy with the wrong rate gives you an indicator that sticks or fails to return.
5) My deadlock indicator is sluggish. Do I need a whole new 4550 or just the spring?
If the deadlock itself throws and retracts fine and only the exit indicator is misbehaving, the 28-0008-MP spring is the repair. It restores tension to the indicator mechanism inside the existing lever assembly. Replace the lock only if the bolt or lever action is also failing.
6) I need a small lock repair part for a 1-3/4 inch commercial door - which one fits my situation?
It depends on what failed. If the exit indicator on an Adams Rite 4550 MS Deadlock no longer shows lock status correctly, the part to order is the Adams Rite 28-0008-MP exit indicator spring, a commercial replacement part built to drop into the existing 4550 MS Deadlock lever assembly without adapters or modification. If instead a spindle is loose or its retaining hardware is missing, the Corbin Russwin Swivel Spindle Pin X Set Screw is the spindle-side part, and it is specified for 1-3/4 inch door thickness. Identify the failed component first, since these are not interchangeable.
7) Is the Adams Rite 28-0008-MP a commercial part or does it suit residential doors?
It's a commercial door hardware part. The host device, the 4550 MS Deadlock, is a commercial mechanical lock typically found on aluminum storefront and institutional openings, so this spring shows up in office buildings, retail storefronts, schools, healthcare and municipal facilities rather than in houses.
8) What should I order to standardize spare parts for Adams Rite 4550 deadlocks across a building?
For indicator repairs, the part to stock is the Adams Rite 28-0008-MP exit indicator spring. It's the OEM tension spring in the 4550 MS Deadlock lever assembly, so one part number covers every 4550 MS opening running an exit indicator in your portfolio.
How fast can I get the Adams Rite 28-0008-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 28-0008-MP come with a warranty?
Absolutely. The Adams Rite 28-0008-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 28-0008-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
Why buy the Adams Rite 28-0008-MP 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.
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