Value Collection 101309P Set Screw 1/4-20 X 1/4 in Cup Point

Product Description

The VALUE COLLECTION 101309P is a 1/4-20 cup point set screw designed for mechanical assemblies requiring a secure, headless fastener. Machined from Grade 8 alloy steel, this screw delivers the high tensile strength needed for demanding clamping and locking applications. The cup point bites into the mating surface to resist rotation and axial movement without requiring a protruding head. Driven by a 1/8-inch hex key, it seats flush or below the surface of the workpiece. Manufactured to ASME/ANSI B18.3 and ASTM F912 standards, this fastener is a dependable choice for precision mechanical and industrial assemblies. Machinists, maintenance technicians, and industrial assemblers install this type of fastener regularly across a wide range of equipment.

This set screw is suited for use in shaft collars, pulleys, gears, knobs, and other mechanical components where a flush-mount locking fastener is required. The 1/4-20 UNC/UNF thread size and 1/4-inch overall length make it appropriate for compact assemblies with limited engagement depth. It is commonly specified in light industrial machinery, motion control equipment, and general mechanical fabrication work where Grade 8 alloy steel strength is needed. Sold individually with a minimum order quantity of 100 pieces per order.

Key Features

• Cup point geometry grips mating shaft surfaces to resist rotation and axial shifting
• Grade 8 alloy steel construction provides high tensile and torsional strength
• 1/8-inch internal hex drive for standard hex key installation in tight spaces
• Headless design seats fully below or flush with the workpiece surface
• Meets ASME/ANSI B18.3 and ASTM F912 dimensional and material standards
• Fractional inch sizing in 1/4-20 thread for broad compatibility with standard tapped holes

Compatibility

Designed as a standard 1/4-20 UNC/UNF cup point set screw for use in any application requiring an ASME/ANSI B18.3-compliant headless fastener in that thread size and length.

Installation Notes

Install using a 1/8-inch hex key; ensure the mating tapped hole is clean and free of debris before threading in the fastener. De-energize or lock out any rotating equipment before servicing components secured by set screws. Do not exceed the torque capacity of the alloy steel screw by using extensions on the hex key. Follow applicable mechanical assembly standards and equipment manufacturer torque guidelines for this fastener size.