Value Collection 603402PR Set Screw 1/2-20x1/2 Flat Point Grade 8

Product Description

The VALUE COLLECTION 603402PR is a 1/2-20 UNF flat point set screw manufactured from Grade 8 alloy steel. It measures 1/2 inch in overall length and is driven with a 1/4-inch hex key. Set screws of this type are used to secure a component — such as a collar, pulley, or gear — onto a shaft by applying direct axial pressure through the flat point against the mating surface. The flat point minimizes marring on hardened shafts and is the preferred point style when the shaft surface must remain undamaged. This fastener meets ASME/ANSI B18.3 and ASTM F912 standards, confirming dimensional and mechanical compliance for precision mechanical assemblies.

This set screw is suited for industrial, mechanical, and maintenance applications where a UNF 1/2-20 threaded hole is present. Typical installations include power transmission components, shaft collars, machine tool fixtures, and rotating equipment assemblies. It is installed by licensed millwrights, maintenance mechanics, and industrial technicians working on equipment requiring threaded retention hardware. The Grade 8 alloy steel construction supports use in higher-load applications where standard steel grades are insufficient.

Key Features

• 1/2-20 UNF thread for fine-pitch engagement and precise axial positioning
• Flat point design minimizes shaft surface damage during installation
• Grade 8 alloy steel construction for high tensile and proof load requirements
• 1/4-inch hex drive for standard Allen key installation
• Meets ASME/ANSI B18.3 and ASTM F912 dimensional and material standards
• Fractional inch sizing for compatibility with inch-standard mechanical assemblies

Compatibility

Designed as a standard inch-series set screw for any mechanical assembly with a 1/2-20 UNF tapped hole requiring a flat point, hex-drive fastener.

Installation Notes

Installation is performed by torquing the set screw with a 1/4-inch hex key until the flat point seats firmly against the shaft or mating surface. De-energize and lock out all equipment before installing or removing set screws in rotating machinery. Apply a thread-locking compound if vibration is a concern in the application. Verify thread engagement depth meets the requirements of the assembly design to avoid fastener pull-out under load.