Value Collection 601348PR Set Screw 1/2-20 X 3/8 in

Product Description

The VALUE COLLECTION 601348PR is a cup point set screw designed for secure shaft-to-hub and shaft-to-collar fastening applications. Manufactured from alloy steel, this fully threaded headless fastener is driven by a 1/4 inch hex key and features a cup point tip that bites into the mating surface to resist rotational and axial movement. The thread size is 1/2-20 UNF, with an overall length of 3/8 inches. It conforms to ASME/ANSI B18.3 and ASTM F912 standards. This screw is suited for use by machinists, millwrights, and maintenance technicians working on rotating equipment, pulleys, gears, and shaft assemblies.

Cup point set screws like the 601348PR are commonly used in industrial and mechanical maintenance settings where a headless fastener is required to lock components to shafts without protruding hardware. The cup point creates an indentation on the shaft surface for a firm mechanical lock. This fastener is appropriate for both light-duty and medium-duty assemblies requiring a reliable UNF-threaded fastener in confined spaces where a standard cap screw cannot be used.

Key Features

• Thread size 1/2-20 UNF for precise engagement in fine-thread applications
• Cup point tip bites into mating shaft surface to resist slippage under load
• Alloy steel construction provides high tensile strength and hardness
• Driven with a 1/4 inch hex key for installation in recessed or tight spaces
• Conforms to ASME/ANSI B18.3 and ASTM F912 dimensional and material standards
• Headless design allows flush or below-surface seating in the threaded bore

Compatibility

Designed as a standard 1/2-20 UNF cup point set screw per ASME/ANSI B18.3, suitable for use in any tapped 1/2-20 threaded bore requiring a headless hex-drive fastener with a cup point tip.

Installation Notes

Installation is performed with a 1/4 inch hex key or Allen driver; ensure the driver is fully seated before applying torque to avoid stripping the hex socket. De-energize or lock out any rotating equipment before installing or removing set screws per applicable OSHA lockout/tagout procedures. Do not exceed the rated engagement depth for the tapped hole, and inspect the shaft surface for proper cup point seating after installation. Replacement or removal of hardened alloy steel set screws may require an impact-style hex driver if the fastener has seized.