Value Collection 97031 Hex Head Cap Screw 5/16-18 Grade 5 100pk

Product Description

The VALUE COLLECTION 97031 is a 5/16-18 x 1.5-inch hex head cap screw manufactured from Grade 5 steel with an uncoated finish. The fastener features partial threading along the shank and conforms to ASME B18.2.1 dimensional standards. The 5/16-18 designation indicates a 5/16-inch nominal diameter with 18 threads per inch in the Unified National Coarse (UNC) thread series. This screw is sold in a 100-piece package and is suited for general mechanical assembly, equipment fabrication, and structural fastening work where Grade 5 tensile strength is required.

This hex head cap screw is used in a wide range of industrial, mechanical, and trade assembly applications. Partial threading allows the unthreaded shank to bear shear loads, making it appropriate for bolted joints where precise fit and load transfer matter. Tradespeople and fabricators working in HVAC equipment assembly, plumbing fixture mounting, electrical enclosure installation, and general structural work will find this fastener applicable across many standard bolted connections requiring 5/16-18 UNC threading.

Key Features

• 5/16-18 UNC thread size with 1.5-inch length measured under head
• Grade 5 steel construction for medium-strength bolting applications
• Partially threaded shank supports shear load transfer in bolted joints
• Uncoated finish — suitable for dry indoor environments or where coating is not required
• Meets ASME B18.2.1 dimensional standard for hex head cap screws
• Sold in a 100-piece package for shop stock and job-lot use

Compatibility

Designed for use in any application requiring a 5/16-18 UNC hex head cap screw with a 1.5-inch length under head, conforming to ASME B18.2.1 specifications.

Installation Notes

Installation should be performed with the appropriate hex or socket wrench sized for a 5/16-inch hex head cap screw. Verify that the mating nut or tapped hole uses a matching 5/16-18 UNC thread specification before assembly. Grade 5 fasteners must not be substituted in joints engineered for higher-grade hardware without engineering review. Always follow applicable codes and torque guidelines specified in the equipment or structural design documentation.