- Knurled cup points have an externally knurled cup that locks the set screw in place and resists loosening and deformation under high vibration.
- Knurled cup points are used both in poorly tapped holes and to locate gears and pulleys on shafts.
- Hex socket drive types have a hex-shaped recess in the head and are driven with hex keys or hex socket bits.
- The driving surface is protected from external damage and provides six sides of contact surface for added torque.
| Type | Set Screw |
| Style | Socket Head |
| Size | #4-40 |
| Length | 3/8" |
| Material | Carbon Steel |
| Thread Type | USS, UNC |
| Point Type | Knurled |
