Smith & Wesson L Frame Model 586 Strain Screw Square Butt - 586173
$8.99
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Smith & Wesson L Frame Model 586 Strain Screw Square Butt - 586173
$8.99
This listing is for the Smith & Wesson L Frame Model 586 Strain Screw, Square Butt (Used OEM Part 586173) only.
Used factory original Smith & Wesson strain screw for the L Frame Model 586 revolver chambered in .357 Magnum, finished in blue steel for square butt grip frames. The strain screw sits in the base of the grip frame and adjusts tension on the mainspring, which directly affects hammer fall force and primer ignition reliability. A loose or worn strain screw can cause light strikes and misfires. Removed from a functioning revolver and inspected prior to sale.
Part Details
- Part Number: 586173
- Finish: Blue Steel
- Grip Frame: Square Butt
- Condition: Used — inspected and functional
- Manufacturer: Smith & Wesson
- Frame: L Frame
- Caliber: .357 Magnum
Model Compatibility
| Make | Frame | Model | Caliber | Compatible |
|---|---|---|---|---|
| Smith & Wesson | L Frame | Model 586 (.357 Magnum, square butt) — all dash revisions (586 through 586-8) | .357 Magnum | ✓ Yes |
| Smith & Wesson | L Frame | Round butt L Frame models | Various | ✗ No — different grip frame |
| Smith & Wesson | L Frame | Other square butt L Frame models (581, 686, 619, 620) | Various | Verify before ordering |
| Smith & Wesson | K / N / X Frame | All | Various | ✗ No — different frame size |
Verify your model number and grip frame style (square butt vs. round butt) before ordering. Contact us with fitment questions.
Installation Note
Straightforward Install: The strain screw can typically be replaced by removing the grip panels, without full disassembly of the action. Basic gunsmithing tools recommended.
We only ship to addresses within the United States.