Value Collection 101399PR Set Screw 5/16-18 X 1-1/2 in Cup Point

Product Description

The VALUE COLLECTION 101399PR is a cup point set screw designed for secure, permanent fastening applications across mechanical and industrial assemblies. Manufactured from Grade 8 alloy steel, this fastener delivers high tensile strength and resistance to loosening under vibration and torque loads. The cup point geometry bites into mating surfaces to create a positive hold without requiring through-hole access. The 5/32-inch hex drive accepts a standard hex key for installation in confined spaces. This screw follows ASME/ANSI B18.3 and ASTM F912 standards, making it a drop-in choice for spec-driven work. Machinists, millwrights, and maintenance technicians use this fastener in shafts, collars, and mechanical assemblies where flush or sub-flush seating is required.

This set screw fits residential and commercial mechanical assemblies, machine tool fixtures, shaft-to-hub connections, and equipment maintenance applications. The 5/16-18 UNC thread size and 1-1/2-inch overall length suit mid-range clamping depth requirements. It is appropriate for any application calling out a cup point set screw to ASME/ANSI B18.3 or ASTM F912, including OEM replacements and production runs. Minimum order quantity is 100 pieces per order, with individual package quantity of 1.

Key Features

• Grade 8 alloy steel construction for high tensile and proof load strength
• Cup point geometry grips mating shaft surfaces to resist rotation and axial movement
• 5/16-18 UNC thread for broad compatibility with standard tapped holes
• 5/32-inch hex drive accepts standard hex keys and L-wrenches
• Meets ASME/ANSI B18.3 and ASTM F912 fastener standards
• 1-1/2-inch overall length for deeper engagement in thick hubs and collars

Compatibility

Designed as an OEM-style replacement or production fastener for any mechanical assembly requiring a 5/16-18 UNC cup point set screw to ASME/ANSI B18.3 or ASTM F912 specifications.

Installation Notes

Installation is performed by machinists, millwrights, or maintenance technicians using a calibrated hex key or L-wrench sized to 5/32 inch. De-energize and lock out all rotating equipment before installing or adjusting set screws in shaft assemblies. Ensure the tapped hole is clean and free of debris before driving the screw to avoid cross-threading. Follow applicable ASME or facility torque standards for the thread size and grade when consistent preload is required.