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Schlage C503-115 Cap Retainer Pin Spring (Including Primus), For Use With FSIC
Features
- Certified Schlage Parts
- Made With Strong Materials
- Many Parts Are Finish Specific
Manufacturer Resources
Product Specs
- Warranty:
- Limited Lifetime Mechanical/Finish
- Product Group:
- Mechanical Locks
- Subcategory:
- Parts and Accessories
- Product Subgroup:
- Parts and Accessories
- Product Type:
- Mounting Assembly
- Commercial/Residential:
- Commercial
- Parts and Accessories Type:
- Replacement Parts
- Product Attribute:
- Parts and Accessories
- Product Category:
- Mechanical Locks
- Department:
- Door Hardware
Schlage C503-0115 – Frequently Asked Questions
1) What does the Schlage C503-115 cap retainer pin spring actually do inside the cylinder?
The C503-115 is the small spring that loads the cap retainer pin in a Schlage full size interchangeable core (FSIC) housing. That pin and spring are what hold the core cap in place; when the spring gets weak or is lost during service, the cap will not retain properly. It is a genuine Schlage replacement part, not an aftermarket copy.
2) Is the C503-115 for small format interchangeable core or full size?
Full size interchangeable core only. Schlage calls out the C503-115 for FSIC cylinders. SFIC cores, including figure-eight Best-style cores, use a different housing and different retainer parts, so this spring is the wrong part for those.
3) Do I need to order a finish for the C503-115 cap retainer pin spring?
No finish choice on this one. It ships as a single model, C503-115, with no finish options. Schlage does note that many of its replacement parts are finish specific, so that caution applies to visible trim parts, not to an internal spring like this.
4) I have a Schlage FSIC core that will not hold its cap. Is the spring all I need?
The spring is one of two pieces in that assembly, the cap retainer pin and the spring that loads it. The C503-115 covers the spring. If the pin itself is deformed or missing, order the matching retainer pin as well so the cap seats and holds.
5) Is this a commercial-grade Schlage part or residential?
Commercial. Schlage classes the C503-115 as a commercial door hardware part, which fits how FSIC keying systems are used, in facilities running master keyed or Primus restricted systems rather than in typical residential locks.
How fast can I get the Schlage C503-0115 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 C503-0115 come with a warranty?
Absolutely. The Schlage C503-0115 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 C503-0115?
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 C503-0115 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.