Hex Head Bolt with
1 Heavy Hex Nut

Hex Head Bolt with
1 Heavy Hex Nut & Flat Washer

Hex Head Bolt with
1 Heavy Hex Nut

Stud Bolt Material Grade Specification/Standard
High and Low Temperature Application ASTM A193 Grade B7
ASTM A193 Grade B7M
ASTM A193 Grade B16
ASTM A320 Grade L7
ASTM A320 Grade L7M
ASTM A320 Grade L43
ASTM A193 Grade B8 / AISI 304
ASTM A193 Grade B8M / AISI 316
ASTM A193 Grade B8C
ASTM A193 Grade B8T
Super High Temperature &
Corrosion Resistance Application		 ASTM A453 Grade 660 A
ASTM A453 Grade 660 B
ASTM A453 Grade 660 C
ASTM A453 Grade 660 D
DUPLEX UNS S31803
NACE MR 01775
ASTM A479
SAF2205
ASTM A182 F51
SUPER DUPLEX UNS S32750
SAF2205
ASTM A182 F53
SUPER DUPLEX UNS S32760
ZERON100
ASTM A182 F55

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Heavy Hex Nut Material Grade Specification/Standard
Application For A193/A320 Stud Bolt ASTM A194 2H
ASTM A194 2HM
ASTM A194 4
ASTM A194 7
ASTM A194 7M
ASTM A194 8
ASTM A194 8M
ASTM A194 8C
ASTM A194 8T