Value Collection 111345PR Set Screw 5/16-24 X 1/2 in Grade 8

Product Description

The VALUE COLLECTION 111345PR is a 5/16-24 x 1/2-inch knurled cup point set screw manufactured from Grade 8 alloy steel. Set screws are headless fasteners used to secure a component — such as a collar, gear, or pulley — against or within another part by applying direct pressure or biting into a mating surface. The knurled cup point provides enhanced grip and resists loosening under vibration. Driven by a 5/32-inch hex key, this fastener meets ASME/ANSI B18.3 and ASTM F912 standards, making it appropriate for precision mechanical assemblies where holding force and dimensional consistency are critical.

This set screw is suited for maintenance, repair, and fabrication work in industrial, mechanical, and trade settings. Common applications include shaft-to-hub connections, positioning collars on round stock, and securing sprockets or pulleys in drive assemblies. The UNF thread form (5/16-24) provides finer thread engagement than coarse-thread equivalents, which is beneficial in thin-walled hubs or applications requiring precise axial adjustment. Machinists, millwrights, and maintenance technicians working on rotating equipment are the primary installers.

Key Features

• Knurled cup point bites into mating surfaces for superior vibration resistance
• Grade 8 alloy steel construction for high tensile and torsional strength
• 5/16-24 UNF thread form for fine-pitch engagement and precise adjustment
• 5/32-inch hex drive compatible with standard hex keys and Allen wrenches
• Meets ASME/ANSI B18.3 and ASTM F912 dimensional and material standards
• Overall length of 1/2 inch for compact installation in shallow hub applications

Compatibility

Designed as a standard 5/16-24 UNF set screw for use in any hub, collar, or mechanical assembly tapped to accept a 5/16-24 thread with a 5/32-inch hex drive socket.

Installation Notes

Installation is typically performed by a machinist or maintenance technician using a calibrated hex key or T-handle driver. De-energize and lock out any rotating equipment before installing or removing set screws. Ensure the tapped hole is clean and free of debris before threading the fastener. Do not overtighten — use a torque specification provided by the equipment manufacturer for the specific hub material and shaft diameter.