Value Collection 40533 Set Screw 5/16-18 X 3/4 in Grade 8 50pk

Product Description

The VALUE COLLECTION 40533 is a knurled cup point set screw designed for secure, vibration-resistant fastening in mechanical assemblies. Manufactured from Grade 8 alloy steel, this fully threaded fastener measures 5/16-18 UNC thread with an overall length of 3/4 inches and is driven by a 5/32-inch hex key. The knurled cup point bites into the mating surface to resist rotation and axial movement, making it a reliable choice for shaft-to-hub connections and similar precision clamping applications. This package contains 50 pieces and conforms to ASME/ANSI B18.3 and ASTM F912 standards.

This set screw is suited for use in general industrial, HVAC equipment, and mechanical power transmission assemblies where a flush or recessed fastener is required. The UNC thread form is widely compatible with standard tapped holes in steel, aluminum, and cast components. Typical install scenarios include locking collars, pulleys, gears, and couplings onto shafts in both light commercial and residential mechanical systems. The 50-piece package quantity is appropriate for shop stock or recurring service use.

Key Features

• Knurled cup point provides positive grip on shaft surfaces to resist rotation and axial load
• Grade 8 alloy steel construction offers high tensile and torsional strength
• 5/16-18 UNC thread ensures compatibility with standard imperial tapped holes
• 5/32-inch hex drive allows installation with a standard hex key or T-handle
• Conforms to ASME/ANSI B18.3 and ASTM F912 dimensional and material standards
• 50-piece pack quantity supports shop stock and multi-unit service work

Compatibility

Designed as an OEM-style replacement or shop-stock fastener for any assembly requiring a 5/16-18 UNC knurled cup point set screw driven by a 5/32-inch hex key.

Installation Notes

Installation is typically performed by a millwright, HVAC technician, or mechanical service technician using a 5/32-inch hex key or Allen wrench. De-energize and lock out all equipment before servicing any rotating or shaft-mounted components. Ensure the tapped hole is clean and free of debris before threading in the screw. Do not exceed the torsional rating of the hex drive by using extension bars on a small hex key.