Value Collection 97331 Hex Head Cap Screw 5/16-24 Grade 5

Product Description

The VALUE COLLECTION 97331 is a 5/16-24 UNF hex head cap screw measuring 1-1/2 inches under the head. It is manufactured from Grade 5 steel with no surface coating applied. The partially threaded shank provides a grip area beneath the head for clamping without thread contact through the full fastener length. These screws conform to ASME B18.2.1 dimensional standards. Licensed mechanics, pipefitters, electricians, and general tradespeople use hex cap screws like this for structural and equipment fastening tasks where a standard hex wrench or socket drive is required.

This fastener is suited for general mechanical assembly, equipment mounting, and structural connections in trade and industrial applications. The 5/16-24 UNF fine-thread designation provides tighter thread engagement compared to coarse thread equivalents, making it appropriate for joints where vibration resistance or precise torque control is a priority. Sold in a package quantity of 100, this screw is well suited for contractors and service shops that require consistent fastener inventory on hand.

Key Features

• 5/16-24 UNF fine-thread form for improved vibration resistance and thread engagement
• 1-1/2 inches length under head for deep grip in standard fastening applications
• Partially threaded shank provides unthreaded bearing surface beneath the head
• Grade 5 steel construction meets strength requirements for general structural use
• Uncoated finish — suitable for applications where galvanic or coating compatibility is a factor
• Conforms to ASME B18.2.1 dimensional standards for consistent fitment across hardware

Compatibility

Designed as a standard hex head cap screw conforming to ASME B18.2.1, this fastener is compatible with any 5/16-24 UNF tapped hole or nut application requiring a Grade 5 steel fastener with partial threading.

Installation Notes

Installation is performed with a 1/2-inch hex wrench or equivalent socket drive. Always verify hole thread specification matches 5/16-24 UNF before installation to avoid cross-threading. Torque to the fastener manufacturer or equipment OEM specification for Grade 5 hardware — do not rely on generic values without verifying joint requirements. Uncoated fasteners in outdoor or corrosive environments may require additional corrosion protection at the installer's discretion.