Bolt 307A

Main production standard: Bolt 307A

● ASME B 18.2.6 Bolts for Large Hexagonal Head Structures

● ASME B 18.2.1 Large Hexagonal Head Bolt

● ASME B 18.2.6M Metric Heavy Hexagonal Structural Bolts

● ANSI/ASME B 18.2.3.5M metric hexagonal head bolts

● SH/T 3404 Hexagonal head bolts for petrochemical purposes

Main materials:

◆ASME SA-193/SA193M ：B6, B7, B7M, L7, L7M, B8, B8M, B8T, B16 

◆ASME SA-320/SA-320M ：L7, L7M, B8, B8M, L43 

◆ASTM F3125 ：A325, A325M, F1852, A490, A490M, F2280 

◆ASME SA-307 ：Gr.A, B, C, D, DH 

◆ASTM A453/A453M ：Gr.660A, 660B, 660C, 660D 

◆SAF ：2205, 2304, 2507, 2520 

◆DIN ：1.4410, 1.4462, 1.4501, 1.4529, 1.4539 

◆GB ：Q235, 10B21, 35, 45, 16Mn, 20MnTiB, 20CrMo, 24CrMo5, 40Cr, 35CrMoA, 42CrMo, 25CrMo4, 25Cr2MoVA, 40CrNiMo, 304, 316, 321, 1Cr13, 2Cr13

American large hexagonal head bolt

Metric Heavy Hexagonal Bolt