Value Collection 101159PR Set Screw 6-32 X 5/8 in Cup Point

Product Description

The VALUE COLLECTION 101159PR is a cup point set screw designed for secure shaft-to-hub and component-locking applications in mechanical assemblies. Manufactured from Grade 8 alloy steel, this fastener delivers high tensile strength and resistance to loosening under vibration and dynamic loads. The 6-32 UNC thread and 5/8-inch overall length make it well suited for small-bore applications where precise clamping force is required. It accepts a 1/16-inch hex key for installation and meets ASME/ANSI B18.3 and ASTM F912 standards. Machinists, millwrights, and maintenance technicians install these fasteners across a wide range of industrial and mechanical service work.

This set screw is used in residential and commercial mechanical equipment, machine tooling, motor shafts, collars, pulleys, and similar assemblies where a headless fastener is required to lock a component to a shaft without protruding above the surface. The cup point bites into the mating surface to provide positive holding force. Minimum order quantity is 100 pieces, making it appropriate for shop stock or job-lot procurement.

Key Features

• Cup point geometry bites into mating shaft for positive grip and resistance to rotation
• Grade 8 alloy steel construction provides high tensile and shear strength
• 1/16-inch hex drive for installation with standard hex keys or Allen drivers
• 6-32 UNC thread for consistent engagement in standard tapped holes
• Meets ASME/ANSI B18.3 and ASTM F912 dimensional and material standards
• Headless design sits flush or below surface to avoid interference with surrounding components

Compatibility

Designed as a standard-specification replacement or stock fastener for any assembly requiring a 6-32 UNC cup point set screw with a 1/16-inch hex drive and 5/8-inch overall length conforming to ASME/ANSI B18.3 and ASTM F912.

Installation Notes

Installation is typically performed by machinists, maintenance technicians, or mechanical contractors using a calibrated hex key or T-handle driver sized at 1/16 inch. De-energize and lock out all rotating equipment before installing or adjusting set screws per OSHA lockout/tagout requirements. Do not overtighten, as excessive torque on small-diameter fasteners can strip threads in the receiving bore. Ensure the tapped hole is clean and free of debris before threading the fastener in by hand to confirm proper thread engagement.