Value Collection 409148BR Set Screw 7/8-9 X 6 in Cup Point Steel

Product Description

The VALUE COLLECTION 409148BR is a cup point set screw designed for mechanical fastening applications where a recessed, headless fastener is required. Measuring 7/8-9 thread size by 6 inches in length, this fastener follows Unified National Coarse (UNC) thread standards and is manufactured from Grade 2 steel with a bright, uncoated finish. The square drive type allows for positive engagement with a square-socket driver. It is a full-thread, headless screw used to secure components such as collars, gears, and pulleys to shafts in industrial and mechanical assemblies. Machinists, millwrights, and maintenance technicians are the primary installers.

This set screw is suited for general-purpose industrial and mechanical maintenance applications. The cup point geometry bites into the mating surface to resist rotation and axial movement, making it appropriate for medium-duty shaft-to-hub connections in machinery, conveyors, and rotating equipment. The uncoated finish is standard for indoor or protected environments where additional corrosion resistance is not required. Thread length is measured as full usable thread length.

Key Features

• Cup point geometry provides reliable bite into mating shaft surfaces to resist rotation and axial movement
• Square drive type for secure driver engagement and high torque transfer
• 7/8-9 UNC thread standard ensures compatibility with standard tapped holes
• 6-inch length accommodates deep-reach or through-boss fastening applications
• Grade 2 steel construction provides adequate tensile strength for general mechanical use
• Bright, uncoated finish — suitable for dry or protected indoor environments

Compatibility

Designed as a general-purpose UNC set screw for use in standard 7/8-9 tapped holes found in mechanical collars, hubs, gears, and similar shaft-retention hardware.

Installation Notes

Set screws of this size are typically installed by machinists or maintenance technicians using a square-socket driver or wrench. Disengage and lock out all rotating equipment before installation or removal per OSHA lockout/tagout procedures. Ensure the tapped hole is clean and free of debris before threading in the fastener. Do not exceed the torque capacity of the Grade 2 steel material; consult applicable fastener torque tables for 7/8-9 UNC Grade 2 specifications.