Value Collection 101123PR Set Screw 5-40 X 5/8 in Cup Point

Product Description

The VALUE COLLECTION 101123PR is a cup point set screw used to secure components onto shafts, rods, or housings without a protruding head. It features a 5-40 UNC thread in a 5/8-inch overall length and is driven with a 1/16-inch hex key. The cup point digs into the mating surface to resist rotation and axial movement under load. Manufactured from Grade 8 alloy steel, this screw delivers high tensile and torsional strength in compact fastening applications. Machinists, maintenance technicians, and assemblers install these in light-duty mechanical assemblies, instrument hardware, and precision equipment where a low-profile fastener is required.

This set screw is suited for residential and commercial mechanical assemblies requiring a fine-thread, small-diameter fastener. Typical applications include collar and gear retention on small shafts, setscrew locking in instrument enclosures, and general mechanical assembly work. The Grade 8 alloy steel construction makes it appropriate for applications with moderate vibration or load demands. It conforms to ASME/ANSI B18.3 and ASTM F912, making it a standard fit for engineering and maintenance environments that specify these fastener standards.

Key Features

• 5-40 UNC thread for fine-pitch engagement in small-diameter applications
• 5/8-inch overall length suitable for moderate-depth socket engagement
• Cup point geometry bites into mating surface to resist rotation and axial shift
• Grade 8 alloy steel construction for high tensile and torsional strength
• 1/16-inch hex drive for use with standard hex key sets
• Meets ASME/ANSI B18.3 and ASTM F912 fastener standards

Compatibility

Designed as an OEM-style replacement or standard-fit set screw for mechanical assemblies requiring a 5-40 UNC thread, cup point, and ASME/ANSI B18.3 or ASTM F912 compliance.

Installation Notes

Installation is performed by machinists or maintenance technicians using a 1/16-inch hex key. Ensure the mating shaft or housing bore is clean and free of debris before driving the screw. Do not exceed the rated drive torque for the 5-40 thread class, and avoid over-tightening, which can strip the small-diameter thread. Consult applicable mechanical assembly standards when installing in load-bearing or vibration-prone applications.