Value Collection 151256PR Set Screw 5/16-18 X 5/16 in Flat Point

Product Description

The VALUE COLLECTION 151256PR is a 5/16-18 x 5/16 inches flat point set screw manufactured from Grade 8 alloy steel. Set screws are headless fasteners used to secure a component — such as a collar, gear, or pulley — against or onto a shaft by applying direct pressure at the point of contact. This screw uses a 5/32 inches hex (Allen) drive and a flat point tip, which distributes clamping force across a broader contact area without marring the mating surface. It meets ASME/ANSI B18.3 and ASTM F912 standards, making it suitable for precision mechanical assemblies where dimensional and strength consistency are required.

Flat point set screws like the 151256PR are commonly used in light to medium industrial assemblies, HVAC equipment, pump and motor shaft collars, and other mechanical drive components. The Grade 8 alloy steel construction provides high tensile strength suitable for applications involving vibration or sustained clamping load. Maintenance technicians, millwrights, and mechanical contractors working on rotating equipment or adjustable shaft-mounted components are the typical installers of this fastener. The UNC 5/16-18 thread pitch is a standard coarse-thread designation widely found in American mechanical hardware.

Key Features

• Grade 8 alloy steel construction for high tensile strength and durability
• Flat point tip distributes clamping force without damaging the mating shaft surface
• 5/32 inches hex (Allen) drive for precise torque application in tight clearances
• UNC 5/16-18 coarse thread standard for broad compatibility with standard tapped holes
• Meets ASME/ANSI B18.3 and ASTM F912 dimensional and performance standards
• Headless design allows full recessing below the surface of the host component

Compatibility

Designed as a standard UNC coarse-thread set screw for use in any tapped 5/16-18 hole requiring a flat point, headless fastener in light to medium mechanical assemblies.

Installation Notes

Installation requires a 5/32 inches hex key or Allen driver. Ensure the tapped receiving hole is clean and free of debris before threading. De-energize and lock out any rotating equipment before installing or adjusting set screws on shaft-mounted components. Do not exceed the torque rating appropriate for Grade 8 alloy steel at this thread size, and verify thread engagement depth meets the requirements of the assembly design.