Value Collection 409118BR Set Screw 5/8-11 X 2-1/2 in Cup Point

Product Description

The VALUE COLLECTION 409118BR is a 5/8-11 x 2-1/2 inch cup point set screw machined from Grade 2 steel with a bright, uncoated finish. Set screws are headless fasteners used to secure a component — such as a gear, pulley, collar, or sprocket — against a shaft by applying direct pressure through the threaded body. The cup point tip bites into the shaft surface to resist rotational and axial movement. The square drive requires a square-key wrench for installation and provides strong torque transfer without stripping. This fastener follows Unified National Coarse (UNC) thread standards and is measured by length under head.

Cup point set screws in this size range are common in industrial machinery, HVAC equipment, pump assemblies, and mechanical drive systems. They are used wherever a permanent or semi-permanent shaft-to-hub connection is needed. The 5/8-11 thread size suits medium-to-heavy-duty applications in both manufacturing and field service environments. Machinists, millwrights, and mechanical service technicians are the primary installers. Minimum order quantity is 10 pieces; this listing represents a package quantity of 1.

Key Features

• Cup point tip bites into shaft material for secure rotational and axial hold
• Square drive for high torque input without cam-out
• 5/8-11 UNC thread — standard fractional inch coarse pitch
• 2-1/2 inch length measured under head
• Grade 2 steel construction — suitable for general-purpose mechanical applications
• Bright, uncoated finish — no plating that could affect dimensional tolerances

Compatibility

Designed as a general-purpose replacement or stocking fastener for any application requiring a 5/8-11 UNC cup point set screw with a 2-1/2 inch length under head.

Installation Notes

Install with the appropriate square-key wrench sized for the drive recess. De-energize and lock out any equipment before accessing the shaft assembly. Thread engagement should be verified to be full and clean before applying final drive torque. Do not use an impact driver on set screws, as this risks thread damage and over-seating the cup point.