Value Collection 131100PR Set Screw 1/4-20 X 3/8 in Oval Point

Product Description

The VALUE COLLECTION 131100PR is a 1/4-20 UNC alloy steel set screw with an oval point, designed for secure positional holding and light locking applications in mechanical assemblies. Manufactured to ASME/ANSI B18.3 and ASTM F912 standards, this Grade 8 fastener delivers the tensile and torsional strength required for demanding industrial and mechanical service. The 1/8 inch internal hex drive accepts a standard hex key for installation into threaded blind holes. At 3/8 inches in overall length, this screw suits moderate-depth thread engagement across a range of shaft and collar applications. Installation is performed with a 1/8 inch hex key wrench, and no through-hole is required.

This set screw is suited for use in shaft collars, shaft couplings, pulleys, sprockets, gears, and similar power-transmission components where a fastener must seat against a shaft without protruding beyond the host material. The oval point geometry provides a low-stress contact interface that resists marring on hardened shafts while maintaining reliable axial and rotational positioning. Typical installers include millwrights, mechanical assemblers, and maintenance technicians working on industrial machinery, conveyor systems, and HVAC drive components.

Key Features

• Grade 8 alloy steel construction for high tensile and torsional strength
• Oval point geometry reduces shaft damage and allows repositioning without marking soft shaft materials
• 1/4-20 UNC thread for compatibility with standard inch-series tapped holes
• 1/8 inch hex drive accepts common hex keys and T-handle drivers
• Conforms to ASME/ANSI B18.3 and ASTM F912 dimensional and mechanical standards
• 3/8 inch overall length suits moderate thread-engagement depth requirements

Compatibility

Designed as a standard 1/4-20 UNC inch-series set screw for use in any tapped hole conforming to ASME/ANSI B18.3 specifications where an oval point and 1/8 inch hex drive are required.

Installation Notes

Installation requires a 1/8 inch hex key or T-handle driver; ensure the driver is fully seated to avoid rounding the hex socket. Power down or de-energize any rotating equipment before installing or adjusting set screws. Apply the appropriate thread-locking compound per the equipment manufacturer's instructions when vibration resistance is required. Do not exceed the rated torsional drive capacity of the hex socket when torquing.