Preloading Bolt Nut Combination

High Strength Structural

Description

Standard Material Type&Grade Normal Size(in.) Length Screw Thread Ob 00.2 δ4 ψ Hardness
(MPa) (MPa) (%) (%) Hardness
ASME B 18.2.6
ASME B 18.2.6M
A307 A All diameters to order ASME/ANSIB 1.1 ≥415 18 HB121~241
B All diameters 415~690 HB121~212
A325 Type 1 0.5~1 IN ≥825 HB253~319
Type 1 1.125~1.5 IN ≥725 HB223~286
A354 BC 0.25~2.5 IN ≥862 ≥752 16 50 HB255~331
>2.5 IN ≥793 ≥683 45 HB235~311
BD 0.25~2.5 IN ≥1034 ≥896 14 40 HB311~363
>2.5 IN ≥965 ≥793 HB293~363