Value Collection 409044PR Set Screw 1/4-20 X 1/2 in Cup Point 100-pack

Product Description

The VALUE COLLECTION 409044PR is a 1/4-20 UNC cup point set screw designed for secure, tool-free-visible fastening in mechanical assemblies where a flush or sub-flush fit is required. Manufactured from Grade 2 steel with a bright uncoated finish, this set screw measures 1/2 inch in length, measured under the head. The square drive requires a matching square key or driver for installation. At 0.05 pounds per unit, these are lightweight fasteners suited for volume use in production, maintenance, and repair applications. Sold in a minimum order quantity of 100 pieces, this part is appropriate for trade professionals and shop environments requiring consistent, interchangeable fasteners.

Cup point set screws like the 409044PR are commonly used to lock shaft-mounted components such as collars, pulleys, gears, and sprockets in place. The cup point bites into the shaft surface to resist rotational and axial movement. This fastener is appropriate for light-to-medium duty mechanical assemblies in HVAC equipment, pumps, motors, and general industrial or plumbing machinery. The 1/4-20 UNC thread is a widely used coarse thread standard, making this screw compatible with pre-tapped holes and standard threaded inserts across a broad range of equipment types.

Key Features

• Cup point geometry provides positive engagement with shaft surfaces to resist slippage
• 1/4-20 UNC coarse thread for broad compatibility with standard tapped holes
• Grade 2 steel construction offers adequate strength for light-to-medium duty mechanical fastening
• Square drive type for positive torque transfer with minimal cam-out
• Bright uncoated finish suitable for indoor and protected environments
• Sold in 100-piece minimum order quantity for production and stocking use

Compatibility

Designed as a standard 1/4-20 UNC cup point set screw for use in any application requiring a 1/4-20 threaded, square-drive fastener with a cup point tip and 1/2-inch length under head.

Installation Notes

Installation is performed by machinists, millwrights, HVAC technicians, or plumbers depending on the assembly. Use the correct square key or driver to avoid stripping the drive recess. Ensure the mating shaft or surface is clean and free of debris before tightening. De-energize or lock out any rotating equipment before installing or removing set screws per applicable OSHA lockout/tagout procedures.