Value Collection 409153BR Set Screw 1-8x4 Cup Point Steel

Product Description

The VALUE COLLECTION 409153BR is a 1-8 x 4 inch cup point set screw manufactured from Grade 2 steel with a bright uncoated finish. Set screws are fully threaded fasteners with no head, driven by a square drive tool and used to secure a component — such as a collar, pulley, gear, or sprocket — against a shaft. The cup point bites into the mating surface to resist rotation and axial movement. This screw follows the Unified National Coarse (UNC) thread standard and is measured by full body length. It is a standard off-the-shelf fastener stocked by maintenance mechanics, millwrights, and equipment technicians across a wide range of industries.

This set screw is suited for general industrial and mechanical applications where a headless, flush-mount fastener is required. Common uses include shaft-to-hub connections in motors, drives, and conveyor systems, as well as fixture and tooling setups in light to moderate load environments. The cup point style is one of the most widely used point types, providing reliable holding power without requiring a drilled seat. Grade 2 steel is appropriate for standard-duty fastening applications that do not involve extreme temperatures or highly corrosive environments.

Key Features

• Cup point geometry bites into mating shaft surface to resist rotation and axial displacement
• Square drive socket provides high torque transfer with standard square drive bits or keys
• UNC thread standard ensures broad compatibility with standard tapped holes
• Bright uncoated finish — no coating buildup that could affect thread fit
• Grade 2 steel construction suitable for general-duty mechanical assemblies
• Fully threaded body allows flush or recessed installation with no protruding head

Compatibility

Designed as a standard UNC-threaded cup point set screw for use in any application requiring a 1-8 x 4 inch headless fastener with a square drive recess.

Installation Notes

Installation is performed with a square drive bit or key of the appropriate size. De-energize and lock out any machinery before installing or removing set screws in rotating equipment. Ensure the tapped hole is clean and free of debris before threading the screw in. Do not use thread-locking compounds unless confirmed compatible with the mating materials and application requirements.