Schlage C503-019 Slide Spring ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$23.30
Schlage C503-019 Slide Spring for ND Series Levers and D Series Knobs

Schlage C503-019 Slide Spring for ND Series Levers and D Series Knobs

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Model: C503-019

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

$23.30
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Schlage C503-019 Slide Spring for ND Series Levers and D Series Knobs

The Schlage C503-019 is a genuine OEM replacement slide spring engineered specifically for use with Schlage ND Series levers and D Series knobs. Designed for commercial-grade mechanical lock applications, this precision replacement part restores proper spring tension and smooth lever or knob actuation in Schlage locksets. As an authentic Schlage component, the C503-019 ensures reliable fit and function when servicing or maintaining existing hardware in professional door hardware installations.

Key Features

  • Genuine Schlage Replacement Part: Authentic OEM slide spring manufactured to Schlage specifications for assured compatibility and dependable performance in ND Series lever and D Series knob assemblies.
  • Precise Series Compatibility: Specifically designed for use with Schlage ND Series levers and D Series knobs, ensuring correct fit without modification.
  • Restores Proper Operation: Replaces worn or damaged slide springs to restore smooth, consistent actuation and return function in commercial locksets.
  • Commercial-Grade Construction: Built to the quality standards of Schlage's commercial mechanical lock product line for lasting reliability in high-use environments.
  • Easy Serviceability: Simplifies on-site maintenance and repair of existing Schlage hardware, reducing the need for full lockset replacement.
  • Rings, Spindles and Springs Category: Classified as a precision internal component within Schlage's parts and accessories range, supporting the mechanical integrity of the lock assembly.

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: C503-019
  • Features: Schlage 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 Schlage C503-019?

Schlage replacement parts like the C503-019 Slide Spring are engineered to the same exacting standards as original factory components, delivering the precise fit and mechanical performance required for commercial lock servicing. Sourcing genuine Schlage components ensures compatibility with ND Series levers and D Series knobs without guesswork, supporting efficient maintenance and long-term hardware reliability 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:
C503-019
Features:
Schlage Parts

Schlage C503-019 – Frequently Asked Questions

1) What does the Schlage C503-019 slide spring actually do inside the lock?
The C503-019 is the slide spring that returns a Schlage ND Series lever or D Series knob to horizontal after it's turned. When levers start to droop or a knob feels loose and slow to come back, the slide spring has lost tension. Swapping it restores proper return action without replacing the whole lockset.
2) I manage a building with sagging Schlage levers on a lot of doors. Is replacing the spring worth it versus new locksets?
For a sagging lever where the latch, cylinder, and chassis are still sound, the slide spring is the usual fix and far cheaper in labor and parts than pulling locksets. The C503-019 is sold as a serviceable replacement part for exactly that: restoring return tension on existing ND and D Series hardware. If the chassis is worn or the latch is failing too, replace the lock.
3) Can a Corbin Russwin swivel spindle pin and set screw be used in place of the Schlage C503-019 slide spring?
No. The C503-019 is a slide spring, a Schlage replacement part made for ND Series levers and D Series knobs, and it restores spring tension and return action inside those assemblies. The Corbin Russwin Swivel Spindle Pin X Set Screw is a spindle retention item rated for 1-3/4 inch doors and belongs to Corbin Russwin locksets. The two parts do different jobs in different manufacturers' chassis, so one will not stand in for the other. For a worn ND lever or D knob return, stay with the Schlage part.
4) Is this a genuine Schlage part or an aftermarket copy?
Genuine Schlage OEM. The C503-019 is a factory replacement component, which is why it drops into ND and D Series assemblies without filing, bending, or shimming.
5) Do I need to order anything else along with the slide spring to finish the repair?
The C503-019 covers the spring itself. If the failure is in the spindle rather than the spring, that's a different part, and other brands are similar: the Corbin Russwin swivel spindle pin with set screw is the equivalent spindle-side repair item for that line, listed for 1-3/4 inch doors. Diagnose which one is worn before ordering, since a spring won't fix a stripped spindle.
6) Does handing matter when ordering the C503-019 slide spring?
No. The slide spring is a symmetrical internal component and is not handed, so the same part serves left- and right-hand ND levers and D knobs. Handing on ND Series is set by the lever assembly and latch, not by the spring.
7) My lever is loose and droops on a commercial door. Do I need a slide spring or a spindle pin and set screw?
It depends on which manufacturer's lock is in the door and what is actually failing. A lever that no longer returns to horizontal points to the spring pack, which is what the Schlage C503-019 slide spring addresses in ND Series levers and D Series knobs. A lever that wobbles on the spindle or pulls away from the rose points instead at spindle retention, which is what the Corbin Russwin Swivel Spindle Pin X Set Screw covers on 1-3/4 inch doors in Corbin Russwin hardware. Identify the lock brand first, then match the failure.
8) Is the Schlage C503-019 slide spring tied to a specific door thickness the way some spindle parts are?
No. The C503-019 is an internal commercial lock component for Schlage ND Series levers and D Series knobs, so it is selected by lock series rather than by door thickness. Spindle hardware works differently: the Corbin Russwin Swivel Spindle Pin X Set Screw is specified for 1-3/4 inch doors, because spindle length has to span the door. When you order the slide spring, confirm the lock is an ND lever or D knob and the fit follows.
9) Is the C503-019 rated for commercial door traffic?
It is a commercial-line part, built for Schlage's commercial mechanical lock hardware rather than residential builder-grade product. That is the ND and D Series world: schools, offices, healthcare, multi-tenant residential.
How fast can I get the Schlage C503-019 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 C503-019 come with a warranty?
Absolutely. The Schlage C503-019 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 C503-019?
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 C503-019 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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