ASTM Specifications

ASTM A193/ASME SA193: Standard Specification for Alloy Steel and Stainless Steel Bolting Materials for High Temperature Service

Material Grades

• B7
• B7M
• B16
• B8 (304)
• B8M (316)

ASTM A320/ASME SA320: Standard Specification for Alloy and Stainless Steel Bolting Materials for Low Temperature Service.

Material Grades

• L7
• L43
• L7M
• B8 (304)
• B8M (316

ASTM A194/ASME SA194: Standard Specification for Carbon, Alloy, and Stainless Steel Nuts for High Pressure and High Temperature.

Material Nut Grades

• 2H
• 2HM
• 7
• 8 (304)
• 8M (316)