Plain Grade 5 Heavy Hex Bolts

Grade 5 heavy hex bolts are externally threaded fasteners made of carbon steel. Bolts designated as heavy hex bolts are very similar to standard hex bolts however the head size across the flats and across the corners is larger providing a broader bearing surface.
Heavy hex bolts are one of the most common fasteners and can be used in a wide variety of applications. The 6-sided head makes them easy to install using a standard wrench or socket tool.
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Product Details

Plain Grade 5 Heavy Hex Bolts

The bolt performance of steel structure connection is divided into 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9 and other more than 10 grades. Among them, the bolts of grade 8.8 and above are made of low carbon alloy steel or medium carbon steel, and after heat treatment (quenching and tempering), they are generally referred to as high-strength bolts, while the rest are generally referred to as plain bolts.

●Drive Type: External Hex

●Finish: Plain

●Material: Steel

●Specification: ASTM A307

●System of Measurement: Inch

●Used in low pressure and low strength applications

●Designed for use with a nut or a threaded hole of the same diameter and thread size

●Nuts & washers not included


Hex head SizeA/F(mm)7810131719222430
Hex head Height(mm)2.83.545.
Thread Lenth≤125(mm)FULL1618222630343846
Thread Lenth≥125(mm)FULLFULL24283236404452


◆Zinc Yellow

◆Zinc Cr+3

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