Value Collection 151220PR Set Screw 1/4-20 X 5/16 in Flat Point

Product Description

The VALUE COLLECTION 151220PR is a flat point set screw designed for mechanical fastening applications where a secure, non-marring hold is required against a shaft or mating surface. Manufactured from Grade 8 alloy steel, this screw offers high tensile strength and resistance to deformation under load. It features a 1/4-20 UNC thread with an overall length of 5/16 inches and is driven by a 1/8-inch hex key. Compliance with ASME/ANSI B18.3 and ASTM F912 standards confirms dimensional accuracy and material performance. Machinists, millwrights, and maintenance technicians install these in production and repair environments.

This set screw is suited for use in rotating equipment, shaft collars, pulleys, couplings, and mechanical assemblies where the flat point distributes clamping force without gouging the mating component. It is appropriate for both light industrial and general mechanical applications. The 1/4-20 UNC thread size is one of the most common thread designations in inch-standard mechanical assemblies, making this screw a versatile stock item for maintenance and repair operations.

Key Features

• Flat point design distributes load evenly without damaging shaft surfaces
• Grade 8 alloy steel construction for high tensile and yield strength
• 1/4-20 UNC thread for compatibility with standard inch-series tapped holes
• 1/8-inch hex drive for use with standard hex keys and Allen wrenches
• Meets ASME/ANSI B18.3 and ASTM F912 dimensional and material standards

Compatibility

Designed as a standard inch-series set screw for use in any tapped 1/4-20 UNC hole requiring a flat point fastener in industrial, mechanical, or maintenance applications.

Installation Notes

Installation requires a 1/8-inch hex key; ensure the key is fully seated before applying torque to avoid rounding the drive socket. Power down and de-energize any rotating equipment before accessing shaft collars or couplings. Clean threads and seating surfaces before installation to ensure full thread engagement. Follow applicable mechanical standards and facility safety procedures when working on rotating machinery.