Smith & Wesson L Frame Model 586 Strain Screw Round Butt Blue Steel .357 Magnum — Used Part 586172
$5.99
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Smith & Wesson L Frame Model 586 Strain Screw Round Butt Blue Steel .357 Magnum — Used Part 586172
$5.99
Smith & Wesson L Frame Model 586 Strain Screw — Round Butt, Blue Steel, Used OEM Part
Genuine used Smith & Wesson OEM strain screw for the L Frame Model 586 revolver with round butt grips, chambered in .357 Magnum. Blue steel finish. The strain screw threads into the bottom of the grip frame and tensions the mainspring, directly affecting trigger pull weight and hammer fall force. This is a direct OEM replacement for a worn, damaged, or missing strain screw. Original factory part in good working condition — threads clean and functional, no stripping or damage.
Specifications
- Part Number: 586172
- Manufacturer: Smith & Wesson
- Model: 586 (L Frame)
- Part Type: Strain Screw
- Grip Frame: Round Butt only
- Finish: Blue Steel
- Caliber: .357 Magnum
- Frame Size: L Frame
- Condition: Used — original factory part, threads clean, no stripping or damage
Model Compatibility Chart
| Model | Frame | Caliber | Grip Frame | Compatibility |
|---|---|---|---|---|
| Model 586 (round butt variants) | L Frame | .357 Magnum | Round Butt | ✓ Compatible — listed model |
| Model 586 (square butt variants) | L Frame | .357 Magnum | Square Butt | ✗ Not compatible — round butt only |
| Model 581 (round butt variants) | L Frame | .357 Magnum | Round Butt | ⚠ Verify fit — same frame/caliber/grip |
| Model 686 (round butt variants) | L Frame | .357 Magnum | Round Butt | ⚠ Verify fit — stainless variant, same frame/caliber/grip |
| Model 681 (round butt variants) | L Frame | .357 Magnum | Round Butt | ⚠ Verify fit — stainless variant, same frame/caliber/grip |
| Model 696 (.44 Special, round butt) | L Frame | .44 Special | Round Butt | ⚠ Verify fit — different caliber, same frame/grip |
| K Frame (all models) | K Frame | Various | — | ✗ Not compatible — different frame |
| N Frame (all models) | N Frame | Various | — | ✗ Not compatible — different frame |
Important Notes
- This listing is for the strain screw only. Mainspring, grip panels, and associated parts are sold separately.
- This strain screw is specific to round butt L Frame grip frames. It is not compatible with square butt Model 586 variants. Verify your grip frame configuration before ordering.
- The strain screw controls mainspring tension. Tightening increases spring tension (heavier trigger pull); loosening decreases it. Proper adjustment requires knowledge of mainspring function — always verify safe hammer fall and reliable ignition after any adjustment.
- The blue steel finish is designed to match blued revolvers. For stainless L Frame models (681, 686), verify finish compatibility before ordering.
- This is a used part in good working condition. Threads are clean and functional with no stripping or damage.
- Professional gunsmith installation recommended for proper fit and function.