Value Collection R52001146 Hex Head Bolt 5/16-18 Grade 2

Product Description

The VALUE COLLECTION R52001146 is a 5/16-18 UNC hex head bolt designed for general fastening applications across construction, mechanical, and light industrial work. It measures 3.5 inches in length under the head and features a hot-dipped galvanized finish over Grade 2 steel, providing corrosion resistance in wet or outdoor environments. The bolt is partially threaded with a 0.5-inch hex drive size and conforms to ANSI/ASME B18.2.1 and ANSI/ASME B18.2.2 dimensional standards. Tradespeople, contractors, and maintenance technicians use this fastener where a standard-duty, corrosion-resistant hex bolt is required.

This bolt suits residential and light commercial applications including structural framing connections, equipment mounting, HVAC support bracket installations, plumbing hanger assemblies, and general metal-to-wood or metal-to-metal fastening tasks. The hot-dipped galvanized coating makes it appropriate for exterior and moderately corrosive environments. The partially threaded shank provides better clamping force in applications where the bolt passes through a clearance hole before engaging the threaded member.

Key Features

• 5/16-18 UNC thread size with partial threading for positive clamping
• 3.5-inch length under head suits medium-depth fastening applications
• Hot-dipped galvanized finish for corrosion resistance in outdoor and wet environments
• Grade 2 steel construction meets standard structural fastener requirements
• Conforms to ANSI/ASME B18.2.1 and ANSI/ASME B18.2.2 dimensional standards
• 0.5-inch hex drive compatible with standard hex sockets and wrenches

Compatibility

Designed as a standard 5/16-18 UNC hex head bolt for use with any 5/16-18 threaded nut or tapped hole requiring a Grade 2 galvanized fastener per ANSI/ASME B18.2.1 and ANSI/ASME B18.2.2 specifications.

Installation Notes

Install using a standard 0.5-inch hex socket or open-end wrench. Always pair with a compatible 5/16-18 nut or verify thread engagement depth in tapped assemblies before applying load. Verify that the galvanized finish is appropriate for the contact materials, as zinc coatings can cause galvanic reactions with certain metals in wet environments. Follow applicable fastener torque guidelines from ASME or the equipment manufacturer for the specific joint type.