Value Collection 111166PR Set Screw 8-32 3/4in Grade 8

Product Description

The VALUE COLLECTION 111166PR is a headless set screw designed for mechanical assemblies where a flush or recessed fastener is required to lock a component in place against a shaft or within a bore. Sized at 8-32 UNC thread with an overall length of 3/4 inches, it features a knurled cup point that bites into the mating surface to resist rotation and axial movement under load. The fastener is machined from Grade 8 alloy steel, providing high tensile strength suitable for demanding industrial and mechanical applications. A 5/64 inch hex drive accepts a standard Allen key for installation and removal.

This set screw is used in collars, pulleys, gears, cams, and similar components where the fastener must sit flush with or below the surface. It is appropriate for light industrial machinery, HVAC blower wheel hubs, motor shaft collars, and general mechanical assemblies in residential and commercial settings. Installers include millwrights, HVAC technicians, and maintenance mechanics working with rotating equipment or shaft-mounted components. The knurled cup point is best suited for permanent or semi-permanent installations where surface marking of the mating part is acceptable.

Key Features

• 8-32 UNC thread with 3/4 inch overall length for secure engagement depth
• Knurled cup point grips mating shaft surface to resist loosening under vibration
• Grade 8 alloy steel construction for high tensile and torsional strength
• 5/64 inch hex socket drive compatible with standard Allen wrenches and hex keys
• Meets ASME/ANSI B18.3 and ASTM F912 standards

Compatibility

Designed as a standard 8-32 UNC headless set screw for use in any mechanical assembly or component requiring a knurled cup point fastener of this thread size and length.

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 socket. Power down and de-energize any associated equipment before servicing shaft collars or rotating components. The knurled cup point will mark or indent the mating surface, so position carefully before final tightening. Follow applicable ANSI and equipment manufacturer guidelines for fastener torque and assembly procedures.