[1 PC] Square Head Set Screws Case Hardened Steel Cup Point 1 3/8-6 X 4 1/2

Engineered for high-strength fastening, our Square Head Set Screws with Cup Point are crafted from case-hardened steel for maximum durability in demanding environments. Designed to securely lock components in place, these screws combine a traditional square head with a precise cup point to resist loosening under vibration while minimizing surface marring.

The size and geometry of this fastener are ideal for fixture assemblies and machinery where a robust, long-length set screw is required. The 1-3/8″-6 size with a 4-1/2″ length delivers dependable engagement across a variety of applications.

Key features

• Head style: Square head for easy seating with a wrench
• Point type: Cup point provides positive seating and minimizes marring
• Material: Case hardened steel for superior strength and wear resistance
• Thread specification: 1-3/8″-6
• Length: 4-1/2″

Applications include securing gears, pulleys, collars, and other components where a reliable, high-strength grip is essential. Use in fixtures, clamping assemblies, and industrial equipment to prevent loosening and maintain precise alignment.