Value Collection 409204PR Set Screw 9/16-12 X 1-1/2 in Cup Point

Product Description

The VALUE COLLECTION 409204PR is a cup point set screw designed for mechanical assemblies requiring secure axial and rotational holding force. Threaded 9/16-12 UNC with a 1-1/2 inch length measured under head, this fastener is manufactured from alloy steel to Grade 2 specification. The square drive design allows high torque application without cam-out, making it a reliable choice where vibration or heavy load cycling is present. This set screw is installed by machinists, millwrights, and maintenance technicians across industrial and commercial equipment applications.

Cup point set screws are used in shaft-to-hub assemblies, shaft collars, gears, pulleys, and similar power transmission components. The cup point geometry bites into the mating shaft surface to resist slippage under dynamic load. This size is commonly found in medium-to-heavy duty mechanical assemblies where a 9/16-12 threaded hole is pre-tapped into the collar or hub. Grade 2 alloy steel provides the hardness needed for positive engagement without damaging hardened shaft surfaces.

Key Features

• Cup point geometry bites into mating shaft surface for positive hold under dynamic load
• Square drive allows high input torque with reduced risk of cam-out
• 9/16-12 UNC thread standard for wide compatibility with standard tapped components
• Grade 2 alloy steel construction for hardness and durability
• 1-1/2 inch thread engagement length suits medium-to-heavy duty collar and hub applications

Compatibility

Designed as a standard replacement or new-installation set screw for mechanical assemblies with a 9/16-12 UNC tapped bore, including shaft collars, shaft couplings, pulleys, and gear hubs requiring a cup point fastener.

Installation Notes

Installation is performed by machinists, millwrights, or qualified maintenance technicians. De-energize and lock out all rotating equipment before servicing any shaft assembly. Use a properly sized square drive key to seat the screw to the specified engagement depth without over-torquing, which can fracture the point or strip the thread. Confirm the mating shaft surface is clean and free of burrs before tightening.