Value Collection 409212PR Set Screw 9/16-12 X 2-1/2 in Cup Point

Product Description

The VALUE COLLECTION 409212PR is a cup point set screw used to secure components such as collars, pulleys, and gears onto shafts without a protruding head. It features a 9/16-12 UNC thread with a 2-1/2 inch length measured under the head, a square drive, and a cup point that bites into the mating surface to resist rotation and axial movement. Manufactured from Grade 2 alloy steel, it delivers the hardness and tensile strength required for high-load fastening applications. Machinists, millwrights, and maintenance technicians working with rotating machinery rely on this style of fastener for reliable shaft retention.

This set screw is suited for industrial and mechanical assemblies where a flush or recessed fastening method is needed. Common applications include motor shaft collars, sheaves, sprockets, and couplings in manufacturing equipment, HVAC drive systems, and general mechanical assemblies. The cup point design is appropriate for both hardened and soft shaft materials. Minimum order quantity is 5 pieces.

Key Features

• Cup point geometry bites into shaft surface for strong axial and rotational hold
• Square drive accepts standard square-key wrenches for high torque application
• 9/16-12 UNC thread form provides coarse-pitch engagement for fast installation
• Grade 2 alloy steel construction for elevated hardness and load capacity
• 2-1/2 inch length under head suits deeper collar and hub engagement
• Fractional inch sizing consistent with standard inch-series mechanical assemblies

Compatibility

Designed as a standard UNC inch-series set screw for use in collars, hubs, and mechanical assemblies requiring a 9/16-12 threaded cup point fastener.

Installation Notes

Installation is typically performed by machinists or maintenance technicians using a square-key wrench sized to the drive socket. Ensure the mating shaft and threaded bore are clean and free of debris before installation. De-energize and lock out all rotating equipment before servicing any shaft-mounted components. Do not exceed the rated capacity of the threaded bore material when applying drive torque.