Value Collection 747061PR Square Head Bolt 5/16-18 Unc

Product Description

The VALUE COLLECTION 747061PR is a square head bolt with a 5/16-18 UNC thread and a 3-1/2 inch length under head. Manufactured from Grade 2 uncoated steel, it meets ANSI/ASME B18.2.1 dimensional standards. The square head profile allows wrench engagement on all four sides, making it well suited for applications where clearance limits the use of a hex head fastener. This bolt is a standard trade-supply fastener used in structural assemblies, equipment mounting, and mechanical fabrication. Installers in HVAC, plumbing, electrical, and general mechanical service will find this size a common requirement for panel and bracket attachment work.

The 747061PR is appropriate for general-purpose fastening applications in light to medium structural assemblies. Its uncoated steel finish is typical for indoor or protected installations where corrosion exposure is minimal. The 5/16-18 UNC coarse thread engages quickly and resists cross-threading during installation, which is useful in field conditions. Sold individually per package, with a minimum order quantity of 50 pieces, this bolt is suited for stocking in service vans, shop inventory, or job-site supply kits.

Key Features

• 5/16-18 UNC coarse thread for fast engagement and broad tool compatibility
• 3-1/2 inch length under head provides generous grip range for thick material stacks
• Square head design allows four-sided wrench contact in tight or offset clearance situations
• Grade 2 steel construction meets ANSI/ASME B18.2.1 dimensional standards
• Uncoated finish suitable for dry or protected indoor installation environments
• Minimum order quantity of 50 pieces supports bulk stocking and inventory replenishment

Compatibility

Designed as a standard 5/16-18 UNC square head bolt for general mechanical and structural fastening applications where ANSI/ASME B18.2.1 compliant hardware is specified.

Installation Notes

Installation is performed with an open-end, box-end, or adjustable wrench sized for the square head. Apply fastener torque in accordance with the engineer of record or equipment manufacturer specification for Grade 2 steel hardware. Do not use impact drivers directly on square head bolts without a proper adapter, as this risks rounding the head. Always inspect threads for damage before installation.