Value Collection A996018 Square Head Bolt 1/2-13 Unc

Product Description

The VALUE COLLECTION A996018 is a 1/2-13 UNC square head bolt designed for heavy-duty fastening applications in mechanical, structural, and industrial assembly work. It features a 3-inch length under head and is manufactured from Grade 5 steel in an uncoated finish. The square head profile provides a large bearing surface that resists turning during installation, making it well suited for use with wrenches or in recessed or tight-clearance locations where a conventional hex head may not seat cleanly. This bolt meets ANSI/ASME B18.2.1 dimensional standards, ensuring consistent fit across standard hardware and tooling. Typically installed by millwrights, pipefitters, HVAC technicians, and general tradespeople requiring reliable threaded fastener solutions.

This square head bolt is commonly used in residential and commercial mechanical installations, equipment mounting, structural framing connections, and general fabrication work. The 1/2-13 UNC thread is a coarse unified national thread, making it compatible with standard 1/2-13 nuts and threaded stock. The uncoated steel finish suits dry or protected indoor environments. This SKU is sold in a package quantity of 25 bolts.

Key Features

• Square head profile provides high torque resistance and positive wrench engagement
• 1/2-13 UNC coarse thread for compatibility with standard nuts and threaded hardware
• Grade 5 steel construction for strength in general mechanical and structural applications
• Meets ANSI/ASME B18.2.1 dimensional standards for consistent sizing and fitment
• 3-inch length under head suitable for medium-depth fastening applications
• Sold in a convenient 25-piece package

Compatibility

Designed for use with standard 1/2-13 UNC nuts and threaded components conforming to ANSI/ASME B18.2.1 specifications. Suitable as a general-purpose square head bolt in mechanical and structural assemblies requiring this thread size and length.

Installation Notes

Installation should be performed by a qualified tradesperson using an open-end or box wrench sized for a square head fastener profile. Disengage power and relieve system pressure before installing or removing fasteners in mechanical or pressurized assemblies. Do not exceed the tensile or shear load limits appropriate for Grade 5 fasteners in the intended application. Follow applicable codes including ANSI and ASME standards for fastener selection and torque application.