Smith & Wesson L Frame Model 686 Thumb Piece & Nut - Part# 6866

Smith & Wesson L Frame Model 686 Thumb Piece & Nut

Part# 6866 | .357 Magnum | Stainless Steel | Old Style Used Part

Keep your Model 686 running smoothly with this factory-original thumb piece and nut. The thumb piece is the cylinder release lever you press to swing out the cylinder — a critical control surface that takes wear over time. This stainless steel old-style unit is a genuine S&W factory part, machined to original specifications for a precise fit and reliable function.

Part Details

• Part Number: 6866
• Condition: Used (Old Style)
• Material: Stainless Steel
• Fits: Smith & Wesson L Frame Model 686 (.357 Magnum)
• OEM: Smith & Wesson factory part

Compatibility

This part fits the S&W L Frame Model 686. To confirm your model number, swing out the cylinder and check behind the yoke on the frame. Model numbers were introduced in 1957–58 — if your revolver predates this, contact us with the serial number and we'll help identify the correct part.

Installation

Disassembly and reassembly are required to replace this part. Installation by a qualified gunsmith is recommended. Factory replacement parts are manufactured to the same specifications, tolerances, and materials as the originals.

Questions? Call or email us — we're happy to help with all your S&W parts needs.