Value Collection 101070PR Set Screw 4-40 Cup Point Grade 8

Product Description

The VALUE COLLECTION 101070PR is a cup point set screw designed for secure, non-permanent fastening in mechanical assemblies. Manufactured from Grade 8 alloy steel, this screw delivers high tensile strength and resistance to loosening under vibration and load. The hex drive socket accepts a 0.05-inch hex key for precise torque application in tight or recessed locations. With a 4-40 UNC thread and 0.125-inch overall length, this fastener suits small-format applications where low-profile holding force is required. It conforms to ASME/ANSI B18.3 and ASTM F912 standards. Installation is performed by maintenance technicians, machinists, and mechanical assemblers across industrial and commercial settings.

This set screw is suited for use in shaft collars, pulleys, gears, knobs, and similar mechanical components where a flush or recessed fastener is needed. The cup point bites into the mating surface to resist rotational and axial movement without a protruding head. Applications include light machinery, instrumentation, HVAC damper linkages, electrical enclosure hardware, and general-purpose mechanical assemblies requiring a compact UNC-threaded fastener.

Key Features

• Grade 8 alloy steel construction for high tensile and shear strength
• Cup point geometry grips mating surfaces to resist axial and rotational movement
• Hex socket drive accepts a 0.05-inch hex key for access in confined spaces
• 4-40 UNC thread standard for compatibility with standard tapped holes
• Meets ASME/ANSI B18.3 and ASTM F912 fastener standards
• Compact 0.125-inch overall length for low-profile and recessed installations

Compatibility

Designed as a standard 4-40 UNC cup point set screw for use in any tapped hole or threaded insert conforming to 4-40 UNC specifications, including shaft collars, hubs, and mechanical assemblies requiring a headless fastener.

Installation Notes

Installation requires a 0.05-inch hex key or Allen wrench; use a calibrated torque driver where precise clamping force is necessary. Power down or de-energize any equipment before accessing fastener locations on live machinery or electrical assemblies. Ensure the mating surface and threaded hole are clean and free of debris before driving the screw to seat. Follow applicable machine design standards and manufacturer torque guidelines for 4-40 Grade 8 fasteners.