Hager 3973 Fixed Cylinder Mort...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$19.49
Hager 3973 Fixed Cylinder Mortise Cylinder Cam with Cloverleaf Profile

Hager 3973 Fixed Cylinder Mortise Cylinder Cam with Cloverleaf Profile

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Model: 3973

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

$19.49
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Hager 3973 Fixed Cylinder Mortise Cylinder Cam with Cloverleaf Profile

The Hager 3973 is a fixed cylinder mortise cylinder cam featuring a cloverleaf profile, designed as a genuine Hager replacement part for commercial-grade mortise lock applications. Engineered for dependable compatibility with Hager mortise cylinder assemblies, this cam component ensures proper cylinder-to-lock body engagement, maintaining the mechanical integrity of the locking system. Ideal for service technicians and facility maintenance professionals seeking an OEM-quality replacement part.

Key Features

  • Cloverleaf Cam Profile: Distinctive cloverleaf geometry engineered for precise engagement with compatible Hager mortise cylinder assemblies, ensuring reliable lock operation.
  • Fixed Cylinder Design: Configured for fixed cylinder mortise applications, providing consistent and repeatable actuating performance with each operation.
  • Genuine Hager Lock Part: Manufactured as an authentic Hager component, designed to maintain original performance specifications when used as a replacement in existing Hager mortise lock systems.
  • Commercial-Grade Construction: Built to the standards expected of commercial door hardware, supporting dependable performance in demanding institutional and commercial environments.
  • Direct Replacement Part: Serves as a targeted replacement component for Hager mortise cylinder cam assemblies, minimizing downtime during lock servicing and maintenance.

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: Cams & Cam Locks
  • Parts and Accessories Type: Replacement Parts
  • Commercial/Residential: Commercial
  • Product Model: 3973
  • Features: Hager Lock Parts

Typical Applications

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

Why Hager 3973?

Hager's 3973 mortise cylinder cam reflects the brand's commitment to producing reliable, commercial-grade door hardware components that meet the demands of professional installation and maintenance. As a genuine Hager lock part, the 3973 is engineered for direct compatibility with Hager mortise cylinder systems, helping facilities managers and service technicians restore lock performance quickly and confidently. When precision fit and long-term mechanical reliability matter, the Hager 3973 delivers a dependable OEM solution.

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:
Cams & Cam Locks
Parts and Accessories Type:
Replacement Parts
Commercial/Residential:
Commercial
Product Model:
3973
Features:
Hager Lock Parts

Hager 3973 – Frequently Asked Questions

1) What is the Hager 3973 cam actually for?
The 3973 is the cam that mounts on the back of a mortise cylinder and transfers the key turn into the lock body. It uses a cloverleaf profile and is set up for fixed cylinder mortise applications, so it is the part you order when the cam on an existing Hager mortise cylinder is worn, wrong, or missing rather than a whole new cylinder.
2) Will the Hager 3973 cloverleaf cam fit a non-Hager mortise cylinder?
The 3973 is a genuine Hager part specified for Hager mortise cylinder assemblies, and that is the only fit stated for it. Cam profiles are not interchangeable between brands, so if you are servicing a Schlage, Corbin Russwin, or Yale mortise cylinder, order that manufacturer's own cam rather than this one.
3) Do I need a cloverleaf cam or a different cam shape for my mortise lock?
Pull the cylinder and look at the cam on the back. The 3973 is the cloverleaf profile. Mortise cylinder cams are also made in straight and horseshoe style shapes, and the lock body's actuating hub will only accept the geometry it was built for, so match the shape you removed. If what comes out is not cloverleaf, this is not your part.
4) Does the Hager 3973 come with the cylinder, or is it the cam only?
Cam only. The 3973 is a single replacement component for a mortise cylinder assembly, so the cylinder, keys, and any mounting screws or set screw you need come from elsewhere. If the cylinder itself is damaged or you are rekeying to a different keyway, order a complete mortise cylinder instead.
5) Can I use the Hager 3973 to standardize cams across a building's mortise locks?
If the openings are running Hager mortise cylinders with cloverleaf cams, yes, the 3973 is the one part number to stock for that. Mixed-brand openings will each need their own manufacturer's cam, so survey the doors first and count how many are Hager before stocking one number for the whole facility.
6) Is the Hager 3973 cam a commercial part or a residential one?
Commercial. The 3973 is catalogued as a commercial-grade mortise lock replacement part, the kind used in offices, schools, healthcare buildings, government facilities, retail, warehouses, and multi-tenant residential where commercial mortise locks are installed.
How fast can I get the Hager 3973 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 Hager 3973 come with a warranty?
Absolutely. The Hager 3973 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 Hager 3973?
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 Hager 3973 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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