Value Collection HCI20310125G-100BX Hex Head Bolt 5/16-18

Product Description

The VALUE COLLECTION HCI20310125G-100BX is a fully threaded hex head bolt designed for general-purpose fastening in structural, mechanical, and utility applications. Built to Grade 2 specification and certified to ASTM A307, this bolt features a 5/16-18 UNC thread and measures 1-1/4 inches in length under the head. The hot-dipped galvanized finish provides corrosion resistance suited for outdoor, wet, or exposed environments. Sold in a minimum order quantity of 100 pieces, this bolt is a practical bulk fastener choice for contractors, maintenance crews, and tradespeople who need a reliable, code-referenced fastener on hand in volume.

This bolt is appropriate for light to medium-duty structural connections, equipment mounting, framing hardware, brackets, and general mechanical assemblies where a standard Grade 2 galvanized fastener is specified. The 5/16-18 UNC thread is one of the most commonly called-out sizes across HVAC equipment panels, electrical enclosures, plumbing supports, and pool equipment frames. Fully threaded construction allows fastening across the full length of the bolt, which is useful in thin-material or through-bolt applications where partial threading would leave an unengaged shank.

Key Features

• 5/16-18 UNC thread — one of the most widely used standard thread sizes in trade applications
• 1-1/4 inch length under head for compatibility with thin to medium material stacks
• Fully threaded shank for maximum thread engagement across the bolt length
• Hot-dipped galvanized finish for corrosion resistance in outdoor and wet environments
• Grade 2 steel construction certified to ASTM A307 for general structural use
• Sold in 100-piece increments for jobsite and shop stock replenishment

Compatibility

Designed as a standard 5/16-18 UNC fully threaded hex head bolt suitable for use wherever Grade 2 galvanized fasteners are specified in light structural, mechanical, or utility installations.

Installation Notes

Install with an appropriate hex wrench or socket driver sized for a standard 5/16-inch hex head bolt. Always verify that the mating nut or tapped hole carries a matching 5/16-18 UNC thread before assembly. In structural connections, follow applicable building codes and torque requirements as specified by the engineer of record or equipment manufacturer. Do not substitute this Grade 2 fastener in applications requiring Grade 5, Grade 8, or other higher-strength specifications without engineering review.