Value Collection R63266028 Set Screw 1/4-20 X 1.5in Cup Point

Product Description

The VALUE COLLECTION R63266028 is a 1/4-20 x 1-1/2 inch cup point set screw made from 18-8 stainless steel. Set screws are headless fasteners used to secure a component — such as a collar, pulley, gear, or sprocket — against a shaft or within a bore. The cup point digs into the mating surface to resist rotation and axial movement without requiring a through-hole. This screw is driven with a 1/8 inch hex key. The 18-8 stainless steel construction provides corrosion resistance suitable for wet, humid, or mildly chemical environments. Machinists, millwrights, and maintenance technicians install these in light to medium-duty mechanical assemblies.

This set screw is appropriate for residential and commercial mechanical applications where a clean, low-profile fastener is needed. Typical uses include shaft collars on conveyor systems, HVAC fan wheel hubs, pump impeller assemblies, and general equipment maintenance. The UNC thread form is the standard inch-series thread used across North American mechanical equipment. Sold individually with a minimum order quantity of 100 pieces.

Key Features

• Cup point geometry bites into the shaft surface for firm holding power without a nut or bolt head
• 18-8 stainless steel resists corrosion in wet and humid service environments
• 1/4-20 UNC thread for broad compatibility with standard inch-series tapped holes
• 1/8 inch hex drive for installation with a standard hex key or Allen wrench
• 1-1/2 inch overall length provides deep thread engagement in thicker hubs and collars

Compatibility

Designed as a standard 1/4-20 UNC set screw for use in any tapped hole accepting a 1/4-20 thread form. Fits shaft collar, hub, and mechanical assembly applications requiring an 18-8 stainless headless fastener.

Installation Notes

A licensed millwright or qualified maintenance technician typically installs set screws during mechanical assembly or component replacement. De-energize and lock out all rotating equipment before accessing shaft-mounted components. Use a correctly sized 1/8 inch hex key to seat the screw fully — an undersized or worn key can strip the drive socket. Do not exceed the torque capacity of the 18-8 stainless material in high-load applications; consult fastener load tables for the specific assembly.