Value Collection 88547369 Set Screw 5/16-18 X 1/2 in Grade 8

Product Description

The VALUE COLLECTION 88547369 is a 5/16-18 x 1/2 inch cup point set screw machined from Grade 8 alloy steel. Set screws are headless fasteners that thread fully into a tapped hole and bear directly against a mating surface to lock shafts, collars, gears, or pulleys in position. The cup point tip bites into the shaft surface to resist rotational and axial movement under load. The 5/32 inch hex drive accepts a standard hex key for installation and adjustment. Grade 8 alloy steel provides the high tensile strength needed for industrial and mechanical assembly applications. This package contains 25 pieces.

Cup point set screws in 5/16-18 UNC thread are a common fastener in mechanical drive assemblies, HVAC equipment, pump and motor shaft collars, and general industrial machinery. The 1/2 inch overall length is suited to medium-wall hubs and collars where thread engagement depth is a design consideration. These fasteners are installed by machinists, millwrights, HVAC technicians, and maintenance mechanics working on rotating equipment or structural assemblies requiring a flush, headless hold-down fastener.

Key Features

• Cup point tip grips shaft surface to resist rotation and axial slip
• 5/16-18 UNC thread for broad compatibility with standard tapped holes
• Grade 8 alloy steel for high tensile and proof load strength
• 5/32 inch hex drive accepts standard hex keys and Allen wrenches
• 1/2 inch overall length suits medium-depth collar and hub applications
• Pack of 25 pieces for shop stock or project quantities

Compatibility

Designed as a standard 5/16-18 UNC cup point set screw for use in any application requiring a headless fastener with a 5/32 inch hex drive and 1/2 inch overall length in a Grade 8 alloy steel specification.

Installation Notes

Set screws are installed by licensed mechanics, millwrights, or qualified technicians using a properly sized 5/32 inch hex key. Always de-energize and lock out rotating equipment before installing or adjusting set screws on shaft assemblies. Ensure the tapped hole is clean and the thread is free of debris before threading in the fastener. Do not exceed the rated drive torque for the hex size, and verify that the mating shaft surface is free of burrs that could prevent full seating of the cup point.