Smith & Wesson J Frame Enclosed Hammer .38 Special / .357 Mag — Factory OEM Part 229690000

Genuine factory new Smith & Wesson OEM double-action-only (DAO) enclosed hammer for J-Frame revolvers chambered in .38 Special and .357 Magnum. The enclosed frame design keeps the hammer internal, preventing snagging on clothing or holsters during a draw—making it the ideal component for concealed carry revolvers. This is an unfinished steel OEM factory replacement designed to restore proper function to factory specification.

⚠️ Fitment & Compatibility Notice: S&W revolver hammers are not drop-in parts and generally require minor fitting by a qualified gunsmith for proper timing and sear engagement.

Specifications:

• Part Number: 229690000

• Manufacturer: Smith & Wesson

• Part Type: Enclosed Hammer (DAO)

• Frame: J-Frame (Centennial / Fully Enclosed Frame)

• Calibers: .38 Special, .357 Magnum, 9mm (Centerfire Only)

• Material: Steel

• Finish: Unfinished

• Condition: Factory New — Genuine OEM

Compatible Models:

• 40, 42 — .38 Special — Centennial / Centennial Airweight (Enclosed)

• 340, 340PD — .357 Magnum — Centennial (Enclosed)

• 342 — .38 Special — Centennial Airweight (Enclosed)

• 442 — .38 Special — Centennial Airweight (Enclosed)

• 640, 640-1 — .38 Special / .357 Mag — Centennial (Enclosed)

• 642, 642-1 — .38 Special — Centennial Airweight (Enclosed)

• 940 — 9mm — Centennial (Enclosed)

Not Compatible:

• Bodyguard (Shrouded) Models: 38, 49, 638, 649 (requires a shrouded hammer).

• Exposed Hammer Models: Chief's Special Models 36, 37, 60.

• Rimfire J-Frames: Models 34, 35, 43, 43C, 63, 317, 351C, 651 (requires a rimfire-specific hammer).