Three Eighths Inch Diameter Four Inch Long Roll Pin Set Of Two Black Finish Heat Treated Spring Pin Tension Pin For Rotating Shafts And Industrial Grade Applications With Minimal Play And Lock Tight Secure Fit

Two-Pin 3/8 in Roll Pin Set for Secure Shafts (4 in)
✔️ 2-pin pack, heat-treated, black finish, 3/8 dia, 4 in length

This precision roll pin set is built from heat-treated spring steel with a black oxide finish for durability. Designed for rotating shafts in cars, boats, machinery, and industrial equipment, these pins minimize play while staying locked in place under load.

✅ Diameter: 3/8 in (9.53 mm)
✅ Length: 4 in (101.6 mm)
✅ Material: Spring steel, heat treated
✅ Finish: Black oxide for durability
✅ Pack size: 2 pins per set
✅ Application: Secures rotating shafts with minimal play

💡 What is a roll pin used for in mechanical assemblies? Roll pins provide axial retention in rotating parts and are handy in securing components.
- A handy way to lock components on a shaft with minimal added play
- Common in gear assemblies, pulleys, linkages, and machinery where easy removal is expected
- Works with standard hole clearances and provides consistent fit under load