Value Collection 151235PR Set Screw 1/4-20 X 1/2 in Flat Point

Product Description

The VALUE COLLECTION 151235PR is a Grade 8 alloy steel set screw designed for secure, flush-point fastening in mechanical assemblies. The flat point distributes clamping force evenly against the mating surface without marring or deforming it, making it well suited for locking collars, hubs, and shafts in place. Driven by a 1/8-inch hex key, the 1/4-20 UNC thread engages quickly and holds reliably under load. Grade 8 alloy steel delivers high tensile strength in a compact form factor. This screw conforms to ASME/ANSI B18.3 and ASTM F912 standards, confirming dimensional and mechanical compliance for critical fastening applications.

This set screw is used across a wide range of industrial, HVAC, electrical, and mechanical service applications where a headless fastener is required to lock rotating or sliding components without protruding above the surface. Typical install scenarios include shaft collars on fan assemblies, pulley hubs, and set-collar clamps on motors or blower shafts. The 1/4-20 UNC thread size is one of the most common in light-to-medium duty mechanical hardware. Sold in a minimum order quantity of 100 pieces, this part is intended for shops, contractors, and service operations that stock fasteners in bulk.

Key Features

• Flat point design distributes load without deforming the mating surface
• Grade 8 alloy steel construction for high tensile strength
• 1/4-20 UNC thread for broad compatibility with standard mechanical components
• 1/8-inch hex drive for use with standard hex keys and Allen wrenches
• Conforms to ASME/ANSI B18.3 and ASTM F912 standards
• Headless design sits flush or below the workpiece surface

Compatibility

Designed as a standard 1/4-20 UNC flat-point set screw suitable for use in any mechanical assembly requiring a headless fastener that conforms to ASME/ANSI B18.3 and ASTM F912 dimensional standards.

Installation Notes

Set screws of this type are installed by machinists, millwrights, HVAC technicians, and general maintenance trades using a 1/8-inch hex key or Allen wrench. Always de-energize and lock out equipment before accessing rotating assemblies. Do not overtighten, as excessive torque on alloy steel set screws in softer mating materials can cause galling or thread damage. Verify thread engagement and seating before returning equipment to service.