Value Collection 601280PR Set Screw 3/8-16 X 3-1/2 in Cup Point

Product Description

The VALUE COLLECTION 601280PR is a cup point set screw designed for secure, metal-to-metal fastening in mechanical assemblies. It features a 3/8-16 UNC thread and measures 3-1/2 inches in overall length. The cup point geometry bites into the mating surface to resist rotational and axial movement under load. Drive engagement is through a 3/16-inch hex key socket. Manufactured from alloy steel, this fastener meets the dimensional and performance requirements of ASME/ANSI B18.3 and ASTM F912. It is used by machinists, millwrights, and maintenance technicians wherever a reliable, headless clamping fastener is required.

Cup point set screws in this thread and length range are commonly installed in shaft collars, shaft couplings, pulleys, sprockets, and similar rotating components across industrial, HVAC, and mechanical equipment. The 3/8-16 coarse thread offers broad compatibility with standard tapped holes in both light and heavy mechanical assemblies. The alloy steel construction handles the clamping forces typical in power transmission and rotating equipment applications.

Key Features

• Cup point tip bites into shaft or mating surface to resist movement under load
• 3/16-inch hex drive for standard Allen key or hex bit engagement
• 3/8-16 UNC coarse thread for broad compatibility with standard tapped holes
• Alloy steel construction for high clamping force and durability
• Meets ASME/ANSI B18.3 and ASTM F912 dimensional and material standards
• Headless design sits flush or below the surface for clearance-sensitive assemblies

Compatibility

Designed as a standard replacement or stocking fastener for any application requiring a 3/8-16 UNC cup point set screw with a 3-1/2-inch overall length and 3/16-inch hex drive, conforming to ASME/ANSI B18.3.

Installation Notes

Installation is performed by machinists, millwrights, or maintenance technicians using a 3/16-inch hex key or Allen driver. De-energize and lock out all rotating equipment before installation or removal. Ensure the tapped hole is clean and free of debris before threading the screw. Do not exceed the torque capacity of the alloy steel fastener; consult applicable engineering references for proper seating torque based on application and surface hardness.