Value Collection 601517BR Set Screw 1-8 X 3-1/2 in Cup Point Alloy

Product Description

The VALUE COLLECTION 601517BR is a cup point set screw designed for secure shaft-to-hub and collar locking applications in industrial and mechanical assembly work. It features a 1-8 UNC thread with an overall length of 3-1/2 inches and is driven by a 9/16-inch hex key. Manufactured from alloy steel to ASTM F912 and ASME/ANSI B18.3 standards, this set screw delivers the hardness and shear resistance required for high-load fastening tasks. The cup point geometry bites into the mating surface to resist rotational and axial movement without the need for through-fasteners.

This set screw is suited for use in industrial machinery, shaft collars, shaft couplings, sprocket hubs, and similar mechanical assemblies where a recessed drive fastener is required. The coarse 1-8 UNC thread pitch makes it well matched for steel and cast-iron components in manufacturing, maintenance, and repair environments. Machinists, millwrights, and maintenance technicians are the primary installers in both production and field-service settings.

Key Features

• Cup point tip bites into shaft surface to resist rotation and axial load
• 1-8 UNC coarse thread for strong engagement in steel and cast iron
• Alloy steel construction meets ASTM F912 hardness requirements
• Conforms to ASME/ANSI B18.3 dimensional standards
• 9/16-inch hex key drive for high torque input without head protrusion
• Headless design sits flush or below surface for clearance-critical assemblies

Compatibility

Designed as a standard ASME/ANSI B18.3 cup point set screw suitable for any application requiring a 1-8 UNC threaded, headless hex-drive fastener with a 3-1/2-inch overall length.

Installation Notes

Installation requires a 9/16-inch hex key or Allen driver rated for the applied torque. Ensure the mating threaded hole is clean and free of debris before driving the screw. De-energize or lock out any equipment before servicing shaft assemblies per applicable OSHA lockout/tagout procedures. Do not substitute a smaller hex key, as rounding the drive socket will compromise removal.