Smith & Wesson J Frame Center Pin Stainless Steel Over 2" Barrel Models 31 34 63 631 632 650 651 - 071320000

Smith & Wesson J Frame Cylinder Center Pin - Part #071320000

Factory original stainless steel cylinder center pin designed specifically for J Frame revolvers with barrels over 2". Critical component that secures the cylinder to the crane assembly, ensuring proper alignment and smooth swing-out operation.

Compatible J Frame Models (Over 2" Barrel):

• Model 31 (.32 S&W Long) - 1960-1992
• Model 34 (.22 LR rimfire) - 1960-1991 (Kit Gun)
• Model 63 (.22 LR rimfire, stainless) - 1977-1998 (Kit Gun)
• Model 631 (.32 H&R Magnum, stainless) - 1990-1992
• Model 632 (.32 H&R Magnum, stainless, Centennial) - 1991-1992
• Model 650 (.22 WMR rimfire) - 1983-1987
• Model 651 (.22 WMR rimfire, stainless, Kit Gun) - 1983-1987, 1990-1998

Important Barrel Length Specification:

This center pin is designed specifically for J Frame models with barrels over 2" (typically 2.5", 3", 4"). Center pins are barrel-length-specific and will not fit shorter barrel lengths (1.875", 2"). Verify your barrel length before ordering.

Caliber Compatibility:

.22 LR (rimfire), .22 WMR (rimfire), .32 S&W Long, .32 H&R Magnum

Key Features:

• Factory new OEM component - authentic Smith & Wesson quality
• Stainless steel construction for durability and corrosion resistance
• Precision machined for proper cylinder alignment
• Essential for safe cylinder swing-out and lockup
• Direct replacement part - fits specific models with barrels over 2"

Function:

The center pin is a critical component that secures the cylinder to the crane (yoke) assembly. It ensures proper cylinder alignment, smooth rotation, and reliable lockup. Replace if worn, damaged, or if experiencing cylinder timing or alignment issues.

Installation:

Gunsmith installation recommended. Requires disassembly of cylinder crane mechanism and proper fitting to ensure correct function.

Need Help Identifying Your Model?

Swing out the cylinder and check behind the yoke on the frame for a model number. Model numbers began in 1957-58. If there is no model number, your revolver is from the Pre-Model era (pre-1957). Contact us with your serial number and we can help identify the correct parts.

We specialize in used, new, and new old stock Smith & Wesson double action revolver parts. Contact us for all your S&W part needs!