Value Collection MP40390 Set Screw 3/8-16 X 1/2 in Cup Point Gr8

Product Description

The VALUE COLLECTION MP40390 is a cup point set screw designed for mechanical assemblies where a fastener must secure a shaft, collar, or component within a housing without protruding beyond the surface. Manufactured from Grade 8 alloy steel, this fastener delivers high tensile strength and resistance to shear forces in demanding industrial and trade applications. The 3/8-16 UNC thread and 1/2-inch overall length suit a wide range of standard bore and collar sizes. Drive is via a 3/16-inch hex key. This screw conforms to ASME/ANSI B18.3 and ASTM F912 standards. Sold in a pack of 25 units.

Cup point set screws are used in shaft-to-hub connections, set collar assemblies, pulleys, sprockets, and similar mechanical components found in HVAC equipment, pump assemblies, fan drives, and general industrial machinery. The cup point geometry bites into the shaft surface to resist rotation and axial movement under load. This screw is appropriate for both original installation and field replacement work where a 3/8-16 UNC set screw is specified.

Key Features

• Grade 8 alloy steel construction for high tensile and shear strength
• Cup point geometry provides positive engagement with shaft surface
• 3/8-16 UNC thread for broad compatibility with standard collars and hubs
• 3/16-inch hex key drive for precise torque application in tight spaces
• Meets ASME/ANSI B18.3 and ASTM F912 fastener standards
• Pack of 25 units reduces per-unit cost for service inventory

Compatibility

Designed as a standard 3/8-16 UNC cup point set screw suitable for shaft collars, hubs, pulleys, and similar components that specify a 3/8-16 hex socket set screw per ASME/ANSI B18.3.

Installation Notes

Installation is performed with a 3/16-inch hex key or Allen wrench. De-energize and lock out all equipment before accessing rotating or driven components. Do not exceed the torque specification listed on the equipment manufacturer's service documentation. Ensure mating threads are clean and free of debris before driving the screw to full engagement.