Value Collection 011217P Hex Socket Cap Screw 5/16-18 Unc

Product Description

The VALUE COLLECTION 011217P is a hex socket cap screw designed for high-strength fastening applications across industrial, mechanical, and structural assembly work. It features a 5/16-18 UNC thread size with a 2-3/4 inch length under head and is partially threaded for secure engagement in standard tapped holes. The drive type is hex socket, accepting a 1/4 inch drive tool. Constructed from alloy steel with a black oxide finish, this screw offers good tensile strength and moderate corrosion resistance. It meets ASME/ANSI B18.3 and ASTM A574 standards, making it a recognized choice for precision fastening in demanding environments. Machinists, maintenance technicians, and fabricators are the typical installers.

This screw is suited for general mechanical assembly, equipment maintenance, and structural fastening applications where a recessed drive head is required. The socket cap head design allows installation in confined spaces where a standard hex bolt head would not fit. Partially threaded shanks are commonly used when the fastener must clamp two workpieces without threading through the full grip length. This part ships in a package quantity of 1 unit with a minimum order quantity of 100 pieces.

Key Features

• 5/16-18 UNC thread size for standard inch-series tapped holes
• 2-3/4 inch length under head, partially threaded for proper clamping
• 1/4 inch hex socket drive for use with standard hex keys or socket drivers
• Alloy steel construction meets ASTM A574 high-strength requirements
• Black oxide coating provides mild corrosion resistance and reduces light reflection
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as a standard inch-series hex socket cap screw for use in any application requiring a 5/16-18 UNC partially threaded fastener with a socket cap head profile per ASME/ANSI B18.3.

Installation Notes

Installation is performed with a 1/4 inch hex key or socket driver. Ensure the mating tapped hole is clean and free of debris before threading. Always torque fasteners according to the joint design specifications provided by a qualified engineer — do not exceed the rated load for the thread size and material grade. Power down or de-energize any equipment before fastening work begins on live assemblies.