Value Collection 111316PR Set Screw 5/16-18 X 5/16 in Grade 8

Product Description

The VALUE COLLECTION 111316PR is a Grade 8 alloy steel set screw designed for secure, flush-mounted fastening in mechanical assemblies. Measuring 5/16-18 thread size at 5/16 inches in overall length, this headless fastener features a knurled cup point that bites into the mating surface to resist rotation and axial movement under load. It is driven with a 5/32-inch hex key and conforms to ASME/ANSI B18.3 and ASTM F912 standards. Grade 8 alloy steel construction provides high tensile strength suitable for demanding industrial and mechanical fastening applications.

This set screw is used in shaft-to-hub connections, collars, pulleys, gears, and similar mechanical assemblies where a headless fastener is required to lock a component in position on a shaft or in a bore. The knurled cup point style provides positive grip on both hardened and soft mating surfaces. Suitable for use in light industrial equipment, HVAC fan assemblies, pump drives, and general mechanical maintenance work performed by service technicians and maintenance trades.

Key Features

• Knurled cup point digs into mating surface for enhanced torque resistance and axial hold
• Grade 8 alloy steel construction provides high tensile and proof-load strength
• 5/32-inch hex drive for standard Allen key installation
• Fully threaded 5/16-18 UNC thread form for full engagement along the fastener length
• Conforms to ASME/ANSI B18.3 and ASTM F912 dimensional and material standards
• Fractional inch sizing for compatibility with standard inch-measurement mechanical assemblies

Compatibility

Designed as an OEM-style replacement or service fastener for mechanical assemblies requiring a 5/16-18 UNC headless set screw with a knurled cup point. Verify thread engagement depth and mating material hardness before installation.

Installation Notes

Installation should be performed by a qualified mechanic or maintenance technician using a calibrated 5/32-inch hex key or Allen wrench. De-energize and lock out all rotating or powered equipment before accessing the assembly. Do not exceed the torque capacity of the mating material, particularly when installing into aluminum or soft alloy hubs. Inspect thread condition on both the screw and the receiving bore before installation to ensure full, clean engagement.