Value Collection 101543PR Set Screw 7/16-20 X 1/2 in Cup Point

Product Description

The VALUE COLLECTION 101543PR is a cup point set screw designed for mechanical assemblies where a fastener must secure a component to a shaft or bore without a protruding head. Sized at 7/16-20 UNF thread with an overall length of 0.5 inches, this set screw is manufactured from Grade 8 alloy steel, providing high tensile strength for demanding clamping applications. Drive engagement is through a 7/32-inch internal hex socket, accepting a standard hex key. It meets ASME/ANSI B18.3 and ASTM F912 dimensional and material standards. Typical installers include machinists, millwrights, and maintenance technicians working on rotating equipment, pulleys, collars, and couplings.

This set screw suits industrial and mechanical maintenance applications where a headless fastener is required to lock a shaft-mounted component in place. The cup point geometry bites into the shaft surface to resist rotational and axial movement under load. It is appropriate for use in light to moderate vibration environments. Applications include motor shaft collars, sprocket hubs, set collar assemblies, and similar mechanical power-transmission components. The 7/16-20 UNF thread pitch provides fine-thread engagement for controlled torque and precise positioning.

Key Features

• 7/16-20 UNF fine thread for precise axial positioning and controlled clamp load
• Cup point geometry bites into shaft surface to resist rotation and axial movement
• Grade 8 alloy steel construction for high tensile and torsional strength
• 7/32-inch internal hex drive accepts standard hex keys
• Meets ASME/ANSI B18.3 and ASTM F912 dimensional and material standards
• Headless design eliminates protrusion hazards in rotating shaft assemblies

Compatibility

Designed as a standard headless cup point set screw for use in any mechanical assembly requiring a 7/16-20 UNF threaded fastener with a 7/32-inch hex drive.

Installation Notes

Installation is performed by machinists, millwrights, or qualified maintenance technicians using a calibrated 7/32-inch hex key or T-handle hex driver. Disengage all power and lock out the equipment before installing or removing set screws on rotating shafts. Ensure the mating threaded bore is clean and free of debris before threading the screw in. Do not substitute an undersized hex key, as rounding the socket will compromise removal and clamp force.