Smith & Wesson J Frame Pre-Model 36 Chief's Special Main Spring & Stirrup .38 Special Used
Smith & Wesson J Frame Pre-Model 36 Chief's Special Main Spring & Stirrup .38 Special — Used (Part# J3642)
This listing is for one used Smith & Wesson J Frame Pre-Model 36 (Chief's Special) main spring and stirrup assembly chambered in .38 Special. This is an OEM factory part in used condition, removed from a functioning firearm. The main spring (hammer spring) powers the hammer, and the stirrup links the spring to the hammer — both are critical to reliable double- and single-action operation.
⚠️ Professional installation recommended. Disassembly and reassembly of the firearm is required to replace this part. Some parts may require fitting by a qualified gunsmith.
Compatibility
| Model | Frame | Caliber | Era | Notes |
|---|---|---|---|---|
| Pre-Model 36 (Chief's Special) | J Frame | .38 Special | Pre-1957 | Confirmed fit |
Model numbers began in 1957–58. If your revolver has no model number stamped behind the yoke, it is a Pre-Model. Contact us with your serial number if you need help confirming compatibility.
Part Details
- Brand: Smith & Wesson
- Part Number: J3642
- Part Type: Main Spring & Stirrup
- Frame Size: J Frame
- Caliber: .38 Special
- Condition: Used (OEM)
Questions? Call or email us — we're happy to help confirm compatibility for your specific revolver.