Value Collection MP40488 Set Screw 3/8-24 X 3/4 in Cup Point Gr8

Product Description

The VALUE COLLECTION MP40488 is a cup point set screw designed for secure shaft-to-hub and collar locking applications in industrial and mechanical assemblies. Manufactured from Grade 8 alloy steel, this fastener delivers high tensile strength and resistance to loosening under vibration and torque loads. The 3/8-24 UNF thread pitch provides fine thread engagement for controlled clamping force, while the 3/4-inch overall length suits a range of hub depths. Driven by a 3/16-inch hex key, it conforms to ASME/ANSI B18.3 and ASTM F912 standards. Each package contains 25 pieces.

This set screw is suited for use in rotating shaft assemblies, sheaves, sprockets, gears, and shaft collars where a recessed drive and flush or sub-flush seating are required. The cup point bites into the shaft surface to resist axial and rotational movement, making it a common choice in conveyor systems, motor shafts, and general mechanical power transmission assemblies. It is appropriate for both light industrial and heavy-duty applications where Grade 8 strength is specified.

Key Features

• Grade 8 alloy steel construction for high tensile and proof load strength
• Cup point geometry bites into shaft surface for positive anti-rotation grip
• 3/8-24 UNF fine thread for precise clamping adjustment
• 3/16-inch hex key drive for recessed installation in tight clearances
• Meets ASME/ANSI B18.3 and ASTM F912 fastener standards
• Sold in a 25-piece package to support job-site and shop inventory needs

Compatibility

Designed as a standard UNF set screw for use in any threaded bore sized for 3/8-24 thread, including shaft collars, hubs, couplings, and similar mechanical components requiring a cup point headless fastener.

Installation Notes

Installation requires a 3/16-inch hex key or Allen driver; ensure the driver is fully seated before applying torque to avoid rounding the socket. De-energize all rotating machinery and lock out power before servicing any shaft assembly. Do not reuse set screws that show signs of deformation at the cup point or thread damage. Follow applicable machinery and mechanical standards for fastener seating and inspection intervals.