Adams Rite 26-0157-MP 4550 MS ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$51.00
$43.10
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Adams Rite 26-0157-MP 4550 MS Deadlock Return Spring Bushing Replacement Part

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Model: 26-0157-MP

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

$51.00
$43.10
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Adams Rite 26-0157-MP 4550 MS Deadlock Return Spring Bushing Replacement Part

The Adams Rite 26-0157-MP is a genuine OEM replacement Return Spring Bushing designed specifically for the Adams Rite 4550 MS Deadlock series. This precision-engineered lever part is an essential component for restoring proper lever return action and maintaining reliable deadlock operation in commercial door hardware applications. As a direct replacement part from Adams Rite, the 26-0157-MP ensures fit, form, and function consistent with original factory specifications for the 4550 MS Deadlock.

Key Features

  • OEM Compatibility: Engineered specifically for the Adams Rite 4550 MS Deadlock series, ensuring precise fit and reliable integration with existing hardware.
  • Genuine Adams Rite Part: Authentic replacement component manufactured to original factory specifications for dependable performance and longevity.
  • Critical Lever Function: Serves as the Return Spring Bushing, a key element in the lever mechanism responsible for consistent lever return action in the 4550 MS Deadlock.
  • Commercial Grade Construction: Designed and rated for commercial door hardware applications where consistent, heavy-duty performance is required.
  • Direct Replacement Design: Drop-in replacement that restores original operation without requiring modifications to the existing deadlock assembly.
  • Part of Rings, Spindles and Springs Category: Classified as a precision mechanical component within the Adams Rite parts and accessories ecosystem.

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: 26-0157-MP
  • Features: Adams Rite Parts

Typical Applications

  • Commercial Office Buildings with Adams Rite 4550 MS Deadlock Installations
  • Retail Storefronts Requiring Deadlock Lever Maintenance or Repair
  • Educational Facilities Servicing Existing Adams Rite Hardware
  • Healthcare Institutions Maintaining Commercial Door Locking Systems
  • Industrial and Warehouse Facilities with Adams Rite MS Deadlock Hardware
  • Government and Municipal Buildings Using Adams Rite 4550 Series Locks
  • Property Management Companies Maintaining Multi-Tenant Commercial Door Hardware

Why Adams Rite 4550 MS Deadlock?

Adams Rite is a trusted name in commercial door hardware, and the 26-0157-MP Return Spring Bushing reflects the same commitment to precision and quality found throughout the 4550 MS Deadlock product line. This genuine replacement part is built to commercial-grade standards, ensuring that serviced hardware continues to deliver the dependable performance demanded in high-use 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:
26-0157-MP
Features:
Adams Rite Parts

Adams Rite 26-0157-MP – Frequently Asked Questions

1) What does the Adams Rite 26-0157-MP return spring bushing actually do in a 4550 MS deadlock?
It is the return spring bushing in the lever mechanism of the Adams Rite 4550 MS deadlock. When the lever stops springing back cleanly after it is thrown, this is the part in that path. Replacing it restores the original lever return action without changing anything else in the deadlock assembly.
2) Will the 26-0157-MP fit any Adams Rite lock, or only the 4550?
Only the 4550 MS deadlock series. The 26-0157-MP is an OEM part built for that series specifically, so do not order it for another Adams Rite MS deadlock model without confirming the lock body is a 4550.
3) Do I have to modify the deadlock or re-prep the door to install this bushing?
No. It is a drop-in replacement that restores original operation with no modification to the existing deadlock assembly, so the door prep, the strike, and the cylinder all stay as they are. It is a bench or in-place repair, not a hardware change.
4) Can a Corbin Russwin swivel spindle pin and set screw be used in place of the Adams Rite 26-0157-MP return spring bushing?
No. The Adams Rite 26-0157-MP is a return spring bushing made as a genuine OEM replacement for the Adams Rite 4550 MS Deadlock, where it supports the lever return action and drops into the existing deadlock assembly without modification. The Corbin Russwin 499F838 is a swivel spindle pin with set screw, a spindle retention part listed for 1-3/4 inch door thickness, and it serves a different mechanical role in a different lock line. If you are servicing a 4550 MS Deadlock lever, the 26-0157-MP is the part that matches the assembly.
5) Is the 26-0157-MP a genuine Adams Rite part or an aftermarket copy?
Genuine Adams Rite, made to the original factory specification for the 4550 MS deadlock. For a locksmith servicing an existing lock, that matters: the fit and the spring geometry match what came out, so the repair does not turn into a lock-body swap.
6) I manage several buildings with Adams Rite 4550 deadlocks. Can I stock this part for all of them?
Yes, provided the locks are 4550 MS deadlocks. The bushing is a single part number with no handing, finish, or size choice to specify, so one line item covers every 4550 opening in the portfolio. That makes it an easy MRO shelf item alongside spare cylinders.
7) My spindle is loose, not the spring return. Is this the right part?
No. The 26-0157-MP addresses lever return action on a 4550 MS deadlock. If the problem is a spindle that will not stay retained, you want a spindle pin and set screw instead, such as the Corbin Russwin swivel spindle pin with set screw for 1-3/4 inch doors on that brand's hardware. Diagnose which part of the mechanism has failed before ordering.
8) My lever is loose on the spindle rather than failing to return - which part do I need?
A lever that is loose or sloppy on the spindle is usually a spindle retention issue, and the Corbin Russwin 499F838 swivel spindle pin with set screw is the part type that addresses spindle retention on 1-3/4 inch doors. The Adams Rite 26-0157-MP addresses a different symptom: it is the return spring bushing in the lever mechanism of the 4550 MS Deadlock, the element tied to consistent lever return. Diagnose whether the lever fails to spring back to horizontal, which points to the bushing, or wobbles on the spindle, which points to spindle hardware.
9) Is this bushing rated for commercial storefront use or is it a light-duty part?
Commercial. The 26-0157-MP is classified for commercial door hardware, which is where the 4550 MS deadlock normally lives: storefronts, office entries, schools, healthcare and municipal buildings running high daily cycles.
How fast can I get the Adams Rite 26-0157-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 26-0157-MP come with a warranty?
Absolutely. The Adams Rite 26-0157-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 26-0157-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 26-0157-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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