Value Collection 121037PR Set Screw 8-32 5/16in Cone Point

Product Description

The VALUE COLLECTION 121037PR is a Grade 8 alloy steel set screw designed for secure, positive positioning of components on shafts, collars, and hubs. This fastener features a cone point geometry that bites into mating surfaces for high holding force with minimal surface contact. It is driven with a 5/64-inch hex key and conforms to ASME/ANSI B18.3 and ASTM F912 standards. The 8-32 UNC thread and 5/16-inch overall length make it suited for compact mechanical assemblies where flush or sub-flush installation is required. Machinists, millwrights, and maintenance technicians are the primary installers of this fastener type.

This set screw is used across a wide range of light-to-medium industrial and mechanical applications including motor shaft collars, set collar assemblies, gear hubs, pulley mounts, and similar rotating or fixed component installations. The cone point is especially effective on hardened shafts or in applications requiring a permanent or semi-permanent hold. It is sold in minimum order quantities of 100 pieces, making it appropriate for production runs, MRO stock replenishment, or service shop inventory.

Key Features

• Grade 8 alloy steel construction for high tensile and torsional strength
• Cone point geometry provides strong bite and high axial holding force
• 5/64-inch hex drive for precise torque application with standard hex keys
• 8-32 UNC thread form for broad compatibility with standard tapped holes
• Conforms to ASME/ANSI B18.3 and ASTM F912 dimensional and material standards
• Compact 5/16-inch overall length suits tight-clearance assemblies

Compatibility

Designed as a standard UNC set screw for use in any 8-32 tapped hole requiring a cone point fastener per ASME/ANSI B18.3 specifications.

Installation Notes

Installation is performed with a 5/64-inch hex key; ensure the key is fully seated before applying torque to avoid rounding the drive socket. The mating tapped hole should be clean and free of debris before threading. De-energize or lock out any rotating equipment before servicing shaft-mounted components that use set screws. Refer to applicable machinery safety standards and facility lockout/tagout procedures during installation or replacement.