Value Collection 151241PR Set Screw 1/4-20 X 3/4 in Flat Point

Product Description

The VALUE COLLECTION 151241PR is a 1/4-20 UNC flat point set screw manufactured from Grade 8 alloy steel. Set screws are fully threaded fasteners with no head, designed to secure a component — such as a collar, gear, or pulley — against or onto a shaft by bearing directly on the shaft surface through the flat point tip. The flat point distributes clamping force over a small area without marring the shaft, making it well-suited for applications where shaft integrity must be preserved. Installation requires a 1/8-inch hex key. This fastener conforms to ASME/ANSI B18.3 and ASTM F912 standards.

This set screw is used across mechanical, industrial, and maintenance applications wherever rotational or axial position must be locked without a traditional bolt head. Common install scenarios include securing shaft collars on conveyor systems, locking pulleys on motor shafts, and fixing hubs in position during equipment assembly or repair. The flat point style is especially preferred when repeated adjustment or repositioning is expected, as it minimizes damage to the mating shaft surface over multiple tighten-and-release cycles.

Key Features

• Grade 8 alloy steel construction provides high tensile and proof load strength for demanding clamping applications
• Flat point tip preserves shaft surface integrity during repeated adjustment cycles
• 1/4-20 UNC thread for broad compatibility with standard inch-dimensioned tapped holes
• 1/8-inch hex drive accepts standard hex keys and L-wrenches
• Meets ASME/ANSI B18.3 and ASTM F912 dimensional and material standards
• Headless design sits flush or below the workpiece surface to eliminate protrusion hazards

Compatibility

Designed for use in any tapped 1/4-20 UNC hole requiring a headless flat point set screw to ASME/ANSI B18.3 and ASTM F912 specifications.

Installation Notes

Set screws of this type are installed by machinists, maintenance technicians, and millwrights using a 1/8-inch hex key or L-wrench. Ensure the mating tapped hole is clean and free of debris before threading in the fastener. De-energize and lock out any rotating equipment before installing or removing set screws on shafts. Avoid over-torquing, which can damage threads in softer hub materials.