Value Collection 131151PR Set Screw 5/16-18 X 5/8 in Oval Point

Product Description

The VALUE COLLECTION 131151PR is a 5/16-18 x 5/8 inch oval point set screw manufactured from Grade 8 alloy steel. Set screws are fully threaded fasteners with no head, designed to secure one component against or within another — most commonly a collar, pulley, gear, or knob onto a shaft. The oval point tip concentrates clamping force on a small contact area without marring the mating surface as aggressively as a cup or cone point. This screw is driven with a 5/32 inch hex key and conforms to ASME/ANSI B18.3 and ASTM F912 standards. Installers in mechanical, HVAC, and general industrial trades reach for this fastener regularly in maintenance and assembly work.

This set screw is suited for applications where a shaft or cylindrical component must be held securely in a fixed position without a protruding head. Common installation scenarios include securing fan hubs, motor shaft collars, and drive components in HVAC and light industrial equipment. The UNC thread form (5/16-18) is the standard coarse thread pitch for this diameter, making it compatible with tapped holes in standard UNC-threaded collars and hubs. Grade 8 alloy steel provides the elevated proof load and tensile strength required for moderate-to-high clamping force applications.

Key Features

• Oval point tip reduces surface damage to mating shaft while maintaining firm seating
• Grade 8 alloy steel construction for high tensile and proof load strength
• 5/16-18 UNC coarse thread for broad compatibility with standard tapped holes
• 5/32 inch hex drive accepts standard hex keys and L-wrenches
• Conforms to ASME/ANSI B18.3 and ASTM F912 for dimensional and material compliance
• Overall length of 5/8 inches suits medium-depth engagement requirements

Compatibility

Designed for use in any application requiring a 5/16-18 UNC threaded set screw with an oval point and 5/32 inch hex drive, including standard shaft collars, hubs, and mechanical assemblies tapped to ASME/ANSI B18.3 specifications.

Installation Notes

Set screws in this class are typically installed by mechanical technicians and maintenance trades using a 5/32 inch hex key or L-wrench. Always de-energize and lock out equipment before servicing components that contain set screws on rotating shafts. Thread engagement should be clean and free of debris before driving; avoid cross-threading by starting the screw by hand. Do not exceed the rated torque range for the fastener grade — refer to the equipment manufacturer's service documentation for torque specifications specific to the assembly.