Value Collection 101387P Set Screw 5/16-18 X 1/2 in Cup Point

Product Description

The VALUE COLLECTION 101387P is a cup point set screw designed for secure fastening in shaft-to-hub, collar, and mechanical assembly applications. Manufactured from Grade 8 alloy steel, this fully threaded headless fastener uses a hex drive and bites into the mating surface with a cup point to resist rotation and axial movement under load. The 5/16-18 UNC thread and 1/2-inch overall length make it a common choice in mechanical assemblies where a flush or recessed fastener is required. Machinists, millwrights, and maintenance technicians install these fasteners using a 5/32-inch hex key. Compliance with ASME/ANSI B18.3 and ASTM F912 confirms dimensional and mechanical conformance to industry standards.

This set screw is suited for use in rotating assemblies, power transmission components, and general industrial machinery where a reliable holding force is needed without a protruding fastener head. Typical applications include securing pulleys, sprockets, gears, and shaft collars. The cup point geometry provides a defined bite point, making it well suited for use on hardened or ground shafts where consistent clamping is critical. This item is sold individually and carries a minimum order quantity of 100 pieces.

Key Features

• Cup point geometry provides defined bite and strong holding force against rotational and axial movement
• Grade 8 alloy steel construction delivers high tensile and torsional strength
• 5/16-18 UNC thread for compatibility with standard threaded bores in imperial-unit assemblies
• Driven with a 5/32-inch hex key, allowing installation in recessed or tight clearance locations
• Meets ASME/ANSI B18.3 and ASTM F912 dimensional and mechanical standards

Compatibility

Designed as a standard imperial-thread set screw for use in any 5/16-18 threaded bore requiring a cup point, headless fastener in mechanical and industrial assembly applications.

Installation Notes

Installation is performed with a 5/32-inch hex key or Allen wrench; ensure the key is fully seated before applying torque to avoid rounding the drive socket. De-energize and lock out any rotating equipment before installing or adjusting set screws on live shafts or couplings. Verify the mating bore thread condition before installation to prevent cross-threading or galling. Follow applicable facility maintenance procedures and manufacturer assembly specifications for final seating.