ASTM A193

B7, B7M, B8 Class 1 & 2, B8M Class 1 & 2, B16, B6, B5, B8T, B8MA, Etc.

Alloy-Steel and Stainless Bolting Materials for High - Temperature Service

ASTM A320

L7, L7M, L43, B8 Class 1 & 2, B8M Class 1 & 2, B8T, B8MA, Etc.

Alloy-Steel Bolting Materials for Low - Temperature Service.

ASTM A194

2H, 2HM, 3, 4, 6, 7, 7M, 8, 8A, 8M, 8MA, 8C, 8CA, 8T, Etc.

Carbon and Alloy-Stee Nuts for Bolts for High - Pressur Pressure and High - Temperature Service.

ASTM A453

Bolting Material, High - Temperature 50 to 120KSI [345 to 827 Mpa] YieldStrength, With Expan Strength, With Expansion Coefficients Comparable to Austeritie St Austeritie Steels.