Shoulder screws have a long, unthreaded, cylindrical shoulder that allows for the rotation of attached parts like pulleys, gears, moving parts of engines and mechanical assemblies, and rolling wheels
Tech Data (PDF)
| Type | Shoulder Screw |
| Style | Socket Head |
| Size | 5/16"-18 |
| Length | 2-1/4" |
| Material | Carbon Steel |
| Thread Type | USS. UNC |
| Shoulder Size | 3/8" |
| Shoulder Length | 2-1/4" |
| Thread Style | Partailly Threaded |
| Specifications | ASTM A574, ASME/ANSI B18.3-2002 |
