Value Collection R52001129 Square Head Bolt 5/16-18 Unc

Product Description

The VALUE COLLECTION R52001129 is a square head bolt designed for general mechanical and structural fastening applications. It features a 5/16-18 UNC thread size with a 1-1/2 inch length under the head, manufactured from Grade 2 steel with an uncoated finish. The square head profile allows for wrench engagement in tight spaces where hex tooling is not practical. This bolt meets ANSI/ASME B18.2.1 dimensional standards, making it a recognized option for assemblies that require conformance to published fastener specifications. It is commonly installed by millwrights, pipefitters, electricians, and general tradespeople across a broad range of industrial and mechanical applications.

This bolt is suited for light to moderate load fastening in residential, commercial, and industrial settings. The uncoated steel finish makes it appropriate for interior or protected installations where corrosion exposure is minimal. The 5/16-18 UNC thread form is a standard coarse-thread designation widely used in fabricated steel assemblies, equipment mounting, and general mechanical construction. Grade 2 steel provides adequate tensile strength for non-critical structural and mechanical connections.

Key Features

• 5/16-18 UNC coarse thread for broad tool and nut compatibility
• 1-1/2 inch length under head for standard grip-range fastening
• Square head profile enables wrench engagement in confined spaces
• Grade 2 steel construction meets basic tensile requirements for general use
• Conforms to ANSI/ASME B18.2.1 dimensional standards
• Uncoated finish suitable for dry or protected interior environments

Compatibility

Designed as a standard ANSI/ASME B18.2.1 square head bolt for use with any 5/16-18 UNC nut or tapped hole in general mechanical and structural assemblies.

Installation Notes

Installation should be performed by a qualified tradesperson using an appropriately sized open-end or adjustable wrench matched to the square head. Always de-energize and lock out any equipment before fastening or removing hardware in electrical or mechanical enclosures. Apply consistent torque in accordance with the assembly specification or applicable code requirement for Grade 2 fasteners. Do not use in high-vibration or high-load-bearing applications where a higher-grade fastener is required.