Value Collection 111157PR Set Screw 8-32 X 1/2 in Knurled Cup

Product Description

The VALUE COLLECTION 111157PR is a headless set screw used to secure a component — such as a collar, pulley, or gear — against or onto a shaft. It features a knurled cup point, which bites into the mating surface to resist rotation and axial movement without requiring a separate locking element. Turned with a 5/64 inch hex key, this screw carries an 8-32 UNC thread and measures 1/2 inch in overall length. It is manufactured from Grade 8 alloy steel, meeting ASME/ANSI B18.3 and ASTM F912 standards. Electricians, HVAC technicians, and mechanical tradespeople use this fastener type when assembling or servicing equipment with set-screw retained components.

This set screw is suited for light-duty mechanical assemblies found in residential and commercial HVAC equipment, electrical enclosures, motors, and general industrial machinery. The 8-32 UNC thread is a common size in small-component assemblies, making this fastener a frequent replacement and maintenance item across multiple trades. It is sold individually, with a minimum order quantity of 100 pieces per order.

Key Features

• Knurled cup point provides positive grip on shaft surfaces to resist rotation and axial slip
• Grade 8 alloy steel construction delivers higher tensile strength than standard steel set screws
• 5/64 inch hex drive accepts standard hex keys and ball-end drivers
• 8-32 UNC thread is a widely used size across HVAC, electrical, and mechanical assemblies
• Meets ASME/ANSI B18.3 and ASTM F912 dimensional and material standards
• 1/2 inch overall length suits shallow hub and collar applications

Compatibility

Designed as a standard 8-32 UNC set screw suitable for any application requiring a knurled cup point headless fastener conforming to ASME/ANSI B18.3 and ASTM F912 specifications.

Installation Notes

Installation is performed with a 5/64 inch hex key or ball-end driver. Ensure the shaft and bore are clean and free of burrs before driving the screw to seat. De-energize or lock out any powered equipment before accessing rotating components secured by set screws. Follow applicable mechanical codes and equipment manufacturer torque guidance when available.