S&W N Frame Locking Bolt Models 329PD/610/624/625/627/629 074940000

Smith & Wesson N Frame Locking Bolt — Factory New OEM

This is a genuine Smith & Wesson factory replacement locking bolt for N Frame revolvers. Manufactured to exact OEM specifications, tolerances, and materials as the original part. Ensures secure cylinder lockup and proper timing across all listed models.

Part Details

• Part Number: 074940000
• Condition: Factory New OEM
• Frame: N Frame
• Compatible Models: 329PD, 610, 624, 625, 627, 629
• Function: Locks the cylinder in battery during firing; critical for timing and safe operation

Compatibility Note

This locking bolt is specific to the N Frame models listed above. Verify your model number before ordering. To find your model number, swing out the cylinder and check the frame behind the yoke. Model numbers were introduced in 1957–58 — if your revolver predates this, contact us with the serial number.

Installation

Disassembly and reassembly of the revolver is required. Installation by a qualified gunsmith is recommended.

Questions? Call or email us — we carry new, used, and new old stock S&W parts for the full N Frame lineup.