Schlage C503-346 Spacer for 20...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$18.16
Schlage C503-346 Spacer for 20-033, 20-066, 20-067 and 20-069 Mailbox Cylinders

Schlage C503-346 Spacer for 20-033, 20-066, 20-067 and 20-069 Mailbox Cylinders

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Model: C503-346

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

$18.16
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Schlage C503-346 Spacer for 20-033, 20-066, 20-067 and 20-069 Mailbox Cylinders

The Schlage C503-346 is a purpose-built installation spacer designed for use with Schlage 20-033, 20-066, 20-067, and 20-069 mailbox cylinders. This commercial-grade accessory ensures proper cylinder fit and alignment, providing the precise dimensional clearance needed for correct mailbox cylinder installation. As an authentic Schlage part, it is engineered to integrate seamlessly with the designated mailbox cylinder series for reliable, long-term performance.

Key Features

  • Precise Cylinder Compatibility: Specifically designed for use with Schlage 20-033, 20-066, 20-067, and 20-069 mailbox cylinders, ensuring correct fit and alignment.
  • Installation Accessory: Functions as a dedicated spacer to facilitate proper cylinder positioning and secure mounting during installation.
  • Authentic Schlage Part: Genuine Schlage component engineered to meet the same quality standards as the parent cylinder products it supports.
  • Commercial-Grade Construction: Rated for commercial applications, delivering the durability and dimensional consistency required in professional hardware installations.
  • Straightforward Integration: Designed to work directly with compatible mailbox cylinder assemblies without modification, simplifying the installation process.

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: Spacers
  • Parts and Accessories Type: Installation Accessories
  • Commercial/Residential: Commercial
  • Product Model: C503-346
  • Features: Schlage Parts

Typical Applications

  • Commercial Mailbox Cylinder Installations
  • Multi-Tenant Residential and Apartment Complexes
  • Office Building Mail Centers
  • Government and Municipal Mail Facilities
  • Postal and Package Management Systems
  • Replacement and Retrofit Cylinder Projects

Why Schlage C503-346?

Schlage parts and accessories are engineered to the same exacting standards as the full product lines they support, ensuring dimensional accuracy and reliable compatibility with designated cylinder models. The C503-346 spacer delivers the precise fit required for professional mailbox cylinder installations, making it the dependable choice for commercial hardware contractors and facility maintenance teams alike.

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:
Spacers
Parts and Accessories Type:
Installation Accessories
Commercial/Residential:
Commercial
Product Model:
C503-346
Features:
Schlage Parts

Schlage C503-346 – Frequently Asked Questions

1) Which Schlage mailbox cylinders does the C503-346 spacer fit?
The C503-346 spacer is made for Schlage 20-033, 20-066, 20-067 and 20-069 mailbox cylinders. If the cylinder you are installing is one of those four, this is the matching spacer. For any other Schlage cylinder series, it is not the correct part.
2) Is the C503-346 a lock, or just the spacer on its own?
Just the spacer. It is an installation accessory, not a cylinder, not a cam, and not a key. You order the 20-033, 20-066, 20-067 or 20-069 mailbox cylinder separately and add this spacer where the mounting depth calls for it.
3) What does a mailbox cylinder spacer actually do during installation?
It takes up the gap between the cylinder and the mailbox door so the cylinder sits at the right depth and stays square. On thin mailbox doors a cylinder can end up standing proud or sitting loose in the hole, and the spacer gives the dimensional clearance the cylinder needs to mount securely and line up with the cam and latch.
4) Do I need to modify the mailbox or the cylinder to use this spacer?
No machining or drilling is called for. The spacer is built to drop into the assembly with the compatible 20-series mailbox cylinders as-is, so it goes in during normal cylinder installation with no modification to the cylinder.
5) Is this spacer suitable for apartment and office building mailbox banks, or is it a residential part?
It is classed as a commercial part and is intended for mailbox installs in multi-tenant and apartment buildings, office mail centers, and government and municipal mail facilities. Property managers re-keying or replacing cylinders across a bank of boxes are the typical buyer.
6) Can I use the C503-346 on a retrofit where I am swapping out old mailbox cylinders?
Yes, replacement and retrofit cylinder work is one of its stated uses. As long as the new cylinder going in is a Schlage 20-033, 20-066, 20-067 or 20-069, the spacer is the right companion piece for setting the cylinder depth in the existing box.
7) Is the C503-346 a genuine Schlage part or an aftermarket copy?
Genuine Schlage. The C503-346 is Schlage's own installation accessory for its mailbox cylinder line, so it is dimensioned to the cylinders rather than to a generic hole size.
8) How many spacers come with the Schlage C503-346?
The C503-346 is sold as a single spacer part number with one configuration. If you are working through a bank of mailboxes, count the cylinders that need shimming and order one per cylinder.
How fast can I get the Schlage C503-346 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 Schlage C503-346 come with a warranty?
Absolutely. The Schlage C503-346 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 Schlage C503-346?
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 Schlage C503-346 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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