Value Collection 50120BMQ Square Head Bolt 1/2-13 Unc

Product Description

The VALUE COLLECTION 50120BMQ is a square head bolt machined to a 1/2-13 UNC thread specification with a 7-1/2 inch length under head. Manufactured from Grade 2 uncoated steel, this bolt meets ANSI/ASME B18.2.1 dimensional standards, making it a reliable choice for general mechanical and structural fastening applications. The square head profile allows wrench or adjustable-plier engagement in confined spaces where conventional hex heads are difficult to access. Weighing approximately 0.43 pounds per piece, it offers substantial body diameter suitable for moderate clamping loads. Plumbers, HVAC mechanics, millwrights, and general contractors reach for square head bolts when period-correct or heavy-duty through-bolt installations call for them.

This bolt is suited for residential and commercial construction, mechanical equipment mounting, pipe hanger assemblies, structural wood connections, and equipment maintenance scenarios where UNC coarse threading is specified. The coarse 1/2-13 thread pitch provides fast engagement and good resistance to cross-threading in field conditions. Uncoated steel finish makes it compatible with field-applied coatings or galvanic isolation where specified by the design. Sold individually per package; minimum order quantity is 5 pieces.

Key Features

• 1/2-13 UNC coarse thread for fast field engagement and broad compatibility
• 7-1/2 inch length under head for through-bolt and deep-stack fastening applications
• Grade 2 steel construction meeting ANSI/ASME B18.2.1 dimensional standards
• Square head profile for wrench or plier engagement in tight clearances
• Uncoated finish compatible with field-applied protective coatings
• Minimum order quantity of 5 pieces keeps jobsite inventory efficient

Compatibility

Designed as a general-purpose replacement or new-installation fastener for applications specifying a 1/2-13 UNC square head bolt per ANSI/ASME B18.2.1, including structural, mechanical, and plumbing support assemblies.

Installation Notes

Installation should be performed by a qualified mechanic, plumber, or contractor following applicable structural or mechanical codes. Always verify thread engagement depth and mating nut grade before torquing. Use an appropriately sized open-end or adjustable wrench on the square head; do not use pipe wrenches, which can round the head corners. Inspect for thread damage before installation and discard any bolt with deformed threads.