Value Collection 5052BMQ Square Head Bolt 1/2-13 Unc

Product Description

The VALUE COLLECTION 5052BMQ is a square head bolt used to fasten structural and mechanical assemblies where a wrench-gripping head is required. It carries a 1/2-13 UNC thread size and measures 3-1/4 inches in length under the head. Manufactured from Grade 2 steel with an uncoated finish, it meets ANSI/ASME B18.2.1 dimensional standards. Machinists, ironworkers, millwrights, and general contractors install this fastener in applications where the square head provides positive wrench engagement and resistance to rounding under high torque.

This bolt is suited for general-purpose structural and industrial fastening in both residential and commercial settings. The square head profile makes it a practical choice in timber framing, equipment mounting, and other applications where clearance limits the use of hex-head tooling or where a through-bolt configuration is preferred. It is sold in a minimum order quantity of 25 pieces per purchase.

Key Features

• 1/2-13 UNC thread for broad compatibility with standard nuts and tapped holes
• 3-1/4 inch length under head suits medium-depth clamping applications
• Square head geometry provides firm wrench purchase and reduces cam-out risk
• Grade 2 steel construction meets ANSI/ASME B18.2.1 dimensional requirements
• Uncoated finish suitable for indoor or protected installations

Compatibility

Designed as a general-purpose replacement or new-installation square head bolt compatible with any standard 1/2-13 UNC nut or tapped fitting conforming to ANSI/ASME B18.2.1.

Installation Notes

Installation is performed by mechanics, carpenters, millwrights, or ironworkers using standard open-end, box, or adjustable wrenches sized for a 1/2-inch square head bolt. Always power down or de-energize any machinery before fastening bolts in proximity to electrical or mechanical drives. Pair with a hardened flat washer and appropriate nut grade to match the bolt grade. Inspect threads for damage before assembly to ensure full engagement.