Heavy Hex Bolt Structural Steel Hexagonal Bolt

Steel structure large hexagon bolts are high-strength fasteners specifically designed for steel structure connections. They typically consist of a bolt shank, a hexagonal head, and a fully threaded or partially threaded section. The head features a standard hexagonal design. Ordinary wrenches or socket tools are allowed for installation.

Specification

Standard GB1228

A325

A490

Size Diameter length M1640-150 M2045-170 M2250-200 M2455-200 M2765-200 M3080-200

Material 20MnTiB 35VB

Nut  material-size 35K-Diameter24 35K-Diameter28/30 35K-Diameter34 35K-Diameter34/36 45#-Diameter38 45#-Diameter42

washer  material-size 45#-Thickness3.55 45#-Thickness3.55 45#-Thickness4.55/4.6 45#-Thickness4.55/4.6 45#-Thickness4.55/4.6 45#-Thickness4.55/4.6

Surface treatment black oxide

Grade 10.9

Production process Raw materials entering the factory - drawing - cold heading  -Heat treatment- inspection - packaging

Package 30kg/ctn