Smith & Wesson K Frame Main Spring Old Style - 10141C
$5.99
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Smith & Wesson K Frame Main Spring Old Style - 10141C
$5.99
Smith & Wesson K Frame Main Spring – Old Style
This factory original Smith & Wesson K Frame Main Spring (also called the hammer spring) provides the force that drives the hammer forward to strike the firing pin. A worn or weakened main spring is one of the most common causes of light primer strikes and misfires in S&W revolvers. This used OEM old-style spring is a direct replacement for restoring reliable ignition in your K Frame revolver.
Part Details
- Part Number: 10141C
- Manufacturer: Smith & Wesson
- Frame: K Frame (Medium Frame)
- Style: Old Style
- Function: Hammer Spring / Mainspring
- Condition: Used – Factory Original, Functional
Model Compatibility
| Model | Caliber | Type | Compatible |
|---|---|---|---|
| 10, 10-10, 12 | .38 Special | Centerfire | ✓ Yes (Old Style) |
| 13 | .357 Magnum | Centerfire | ✓ Yes (Old Style) |
| 14, 15 | .38 Special | Centerfire | ✓ Yes (Old Style) |
| 16 | .32 Long | Centerfire | ✓ Yes (Old Style) |
| 17, K22 | .22 LR | Rimfire | ✓ Yes (Old Style) |
| 18 | .22 LR | Rimfire | ✓ Yes (Old Style) |
| 19 | .357 Magnum | Centerfire | ✓ Yes (Old Style) |
| 48 | .22 Magnum | Rimfire | ✓ Yes (Old Style) |
| 64, 65, 66, 67 | .38 Spl / .357 Mag | Centerfire | ✓ Yes (Old Style) |
| 617 | .22 LR | Rimfire | ✓ Yes (Old Style) |
| New Style K Frame models | Various | Various | ✗ Verify – New style spring differs |
⚠️ This is the old style main spring. Verify your revolver uses the old-style configuration before ordering. The main spring is interchangeable across centerfire and rimfire K Frame models of the same style.
Installation Note
Main spring replacement requires disassembly of the grip frame and mainspring housing. Professional gunsmith installation is recommended. Always verify reliable primer ignition after installation before carrying or using for self-defense.