Value Collection 101329P Set Screw 1/4-20 X 1-1/2 in Cup Point

Product Description

The VALUE COLLECTION 101329P is a 1/4-20 x 1-1/2 inch cup point set screw manufactured from Grade 8 alloy steel. Set screws are headless fasteners used to secure a component — such as a collar, pulley, or gear — against a shaft by applying axial force through a threaded body. The cup point tip bites into the shaft surface to resist rotation and axial movement. Driven with a 1/8 inch hex key, this fastener meets ASME/ANSI B18.3 and ASTM F912 standards. The Grade 8 alloy steel construction provides high tensile strength suitable for demanding mechanical applications.

This set screw is used across a wide range of industrial and mechanical assembly applications. Common install scenarios include securing pulleys, sprockets, collars, and knobs to shafts in HVAC blower assemblies, pump drives, and general mechanical equipment. It is installed by maintenance technicians, millwrights, and mechanical assemblers working on rotating equipment. The 1/4-20 UNC/UNF thread standard ensures broad compatibility with standard tapped holes in the same size class.

Key Features

• Cup point tip bites into shaft surface for positive grip and resistance to rotation
• Grade 8 alloy steel construction delivers high tensile and torsional strength
• 1/8 inch hex drive for use with standard hex keys and Allen wrenches
• 1/4-20 UNC thread standard for compatibility with commonly tapped shaft collars and hubs
• Meets ASME/ANSI B18.3 and ASTM F912 dimensional and material standards
• Headless design allows flush or below-surface installation

Compatibility

Designed as a standard 1/4-20 UNC cup point set screw for use in any tapped hole or component requiring a 1/4-20 x 1-1/2 inch headless fastener with a 1/8 inch hex drive.

Installation Notes

A licensed mechanic, millwright, or qualified technician should install this fastener. De-energize and lockout/tagout any rotating equipment before installation per OSHA lockout/tagout procedures. Use a properly sized 1/8 inch hex key to drive the screw — do not use an undersized key, as this will damage the drive recess. Inspect the shaft surface and tapped hole for damage or contamination before installation.