Smith & Wesson Square Butt Strain Screw
Factory new strain screw for Smith & Wesson K Frame square butt revolvers. The strain screw adjusts mainspring tension and is critical for proper trigger function.
- Part Number: V60
- Models: M&P, Victory Model, Pre-10, K-38
- Frame: K Frame square butt
- Condition: New Old Stock
- Function: Mainspring tension adjustment
- Style: Square butt configuration
This genuine S&W strain screw allows proper adjustment of mainspring tension, affecting trigger pull weight and hammer fall. Essential for optimal revolver performance.