Value Collection R40343404 Set Screw 8-32 X 1/2 in Cup Point Ss

Product Description

The VALUE COLLECTION R40343404 is a headless set screw designed to secure a component — such as a shaft collar, pulley, or knob — against a mating shaft or surface without protruding above the workpiece. It features a cup point tip, which bites into the shaft to resist rotation and axial movement. The thread specification is 8-32 UNC, with an overall length of 1/2 inch. Drive is an internal hex socket sized at 5/64 inch, engaged with a standard hex key or Allen wrench. Material is grade 18-8 stainless steel, offering good corrosion resistance in mildly aggressive environments. Sold individually; minimum order quantity is 100 pieces.

This set screw is suited for light-duty mechanical assemblies in HVAC, plumbing, electrical, and general industrial applications. Typical uses include securing shaft collars on motor shafts, locking adjustment knobs, and retaining pulleys or sprockets on drive shafts. The 8-32 UNC thread is a common size found in small-frame motors and instrumentation hardware, making this screw a standard replacement or stocking item for maintenance shops and service technicians.

Key Features

• Cup point tip provides a firm bite into shaft material, resisting axial and rotational movement
• Grade 18-8 stainless steel construction resists corrosion in moderate-exposure environments
• 8-32 UNC thread is a widely used standard size for small mechanical assemblies
• 5/64-inch internal hex drive accepts a standard hex key for installation in confined spaces
• Headless design sits flush or below the workpiece surface, eliminating snag points

Compatibility

Designed as a standard 8-32 UNC cup-point set screw suitable for shaft collars, pulleys, knobs, and similar fastening applications requiring a headless, internal-hex drive fastener in stainless steel.

Installation Notes

Installation is performed with a 5/64-inch hex key. Ensure the mating shaft or surface is clean and free of debris before engaging the cup point. De-energize or lock out any rotating equipment before installing or removing set screws in live machinery. Apply thread locker if vibration is a concern and the application permits it.