Value Collection 601250PR Set Screw 5/16-18 X 3in Cup Point

Product Description

The VALUE COLLECTION 601250PR is a cup point set screw designed for mechanical assemblies requiring a secure, recessed fastener. Measuring 5/16-18 thread size with an overall length of 3 inches, this fastener is driven by a 5/32-inch hex key and seated fully below the surface of the mating part. Made from alloy steel and manufactured to ASTM F912 and ASME/ANSI B18.3 standards, it delivers the hardness and shear strength needed in demanding industrial and mechanical applications. Machinists, millwrights, and maintenance technicians install this type of fastener in set screw collar, pulley, gear, and shaft-retention applications.

This set screw is suited for use in rotating shaft assemblies, shaft collars, sprockets, couplings, and similar components where flush or below-surface fastener seating is required. The cup point geometry bites into the shaft surface to resist rotation and axial movement under load. It is commonly used in light manufacturing, HVAC equipment assemblies, conveyor systems, and general mechanical maintenance. Sold individually with a minimum order quantity of 10 units per order.

Key Features

• Cup point geometry bites into shaft material to resist rotation and axial displacement
• Alloy steel construction meets ASTM F912 material grade for high hardness and tensile strength
• Conforms to ASME/ANSI B18.3 dimensional standard for consistent fitment with standard hex keys
• 5/32-inch hex drive allows installation with a standard Allen wrench or hex key tool
• UNC thread standard (5/16-18) for compatibility with common tapped holes in inch-measurement applications
• Overall length of 3 inches accommodates deeper thread engagement requirements

Compatibility

Designed for use in any tapped hole conforming to 5/16-18 UNC thread specification in inch-measurement mechanical assemblies, including shaft collars, pulleys, gears, and couplings that accept a cup point set screw per ASME/ANSI B18.3.

Installation Notes

Installation is performed by machinists, millwrights, or qualified maintenance technicians using a calibrated hex key or Allen wrench of the correct 5/32-inch drive size. Always de-energize and lock out rotating equipment before installing or removing set screws on live shafts. Do not over-torque the fastener, as this can damage the cup point or the shaft surface and reduce holding strength. Confirm the mating tapped hole thread is clean and free of debris before seating the screw.