Speaking of hexagon head bolts, it is a very big concept. Hexagon head bolts are divided into extra hexagon bolts and inner hexagon bolts, which are commonly used fasteners and are mainly used for fastening mechanical equipment. Regardless of whether it is an external hexagon or an internal hexagon, their specification and size representation methods are similar. Today we have summarized in detail the size, standard, and specification of hexagon head bolts, and organized the specification table of common hexagon head bolt products. The role of an introductory guide makes everyone more or less familiar with hexagon head bolts.

Standard introduction of hexagon head bolts:

The national standard GB/T5782-86 for external hexagon bolts, this standard specifies the thread specifications of M3~M64, A and B grade hexagon head bolts, A grade is used for D<=24 and L<=10D or L

GB/T 5780-2016 Hexagon Head Bolt Class C

GB/T 5781-2016 Hexagon Head Bolt Full Thread Class C

GB/T 5782-2016 Hexagon head bolts

GB/T 5783-2016 Hexagon head bolts full thread

GB/T 5785-2016 Hexagon head bolts, fine pitch

GB/T 5786-2016 Hexagon head bolts fine pitch full thread

Introduction to the meaning of the prescribed marks of hexagon head bolts:

When introducing the standard of hex head bolts above, it involves Grade A and Grade B. Do you all know what this means? The product grades of hex head bolts are divided into three grades: A, B, and C, which represent accuracy. Grade A is the most accurate and Grade C The accuracy is the worst. The accuracy is different, the place of effect is also different, A grade is higher than B grade, A grade is used in places with high requirements, and most of them use B grade. Class A is used for occasions that require a large load, high precision or are subjected to shock or vibration loads. When choosing hexagon head bolt products, remember to pay attention to the mark to buy.