Smith & Wesson N Frame Model 1917 Strain Screw - Square Butt - Used OEM 1917174B
This listing is for the strain screw only.
Genuine Smith & Wesson OEM strain screw for the N Frame Model 1917 revolver chambered in .45 ACP (D.A. .45). Square butt grip frame configuration. The strain screw tensions the mainspring at the bottom of the grip frame, directly affecting trigger pull weight and hammer reliability. Used, original factory part in excellent condition.
Part Details:
- Part Number: 1917174B
- Frame: N Frame
- Grip Style: Square Butt
- Caliber: .45 ACP (D.A. .45)
- Condition: Used OEM
Model Compatibility:
- Smith & Wesson N Frame Model 1917 (.45 ACP / D.A. .45) — Square Butt configuration
Important: This screw is for square butt grip frames only. Strain screw tension directly affects trigger pull weight: tightening increases pull weight, loosening decreases it. Professional installation by a qualified gunsmith is recommended.
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