For legacy equipment built around open wrench access, the 1/4-20 x 3 Cup Point Square Head Set Screw keeps the drive on four exposed flats. Because there is no internal recess, the drive is less likely to pack with debris during plant maintenance or field repair.
Repair departments use this family when replacing worn or missing set screws on older conveyors, mixers, and material-handling machinery. Because a square head protrudes and rotates with the shaft, exposed rotating assemblies near personnel may call for a guarded headless set screw instead.
Cold Headers can help confirm pricing and availability for exact-size square-head cup point set screws without making unsupported availability promises. Review the thread, length, square-head dimensions, and cup point diameter before substituting another set screw style.
Technical Highlights
- Head: Square, wrench-driven; flats match nominal size
- Point: Cup Point
- Thread Size: 1/4-20 (Class 2A)
- Length: 3 in.
- Width Across Flats: 0.250 max / 0.241 min in.
- Width Across Corners: 0.354 max / 0.331 min in.
- Head Height: 0.196 max / 0.178 min in.
- Cup Point Diameter: 0.132 max / 0.118 min in.
- Material: Carbon Steel, case hardened per ASME B18.6.2 (case hardness 83 HR15 minimum, case depth 0.006 in. minimum)
- Finish: Plain
- Dimensional Standard: ASME B18.6.2
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
