GRADE AND MATERIAL IDENTIFICATION (Hex Nuts)

GRADE AND MATERIAL IDENTIFICATION (Hex Nuts)

ID Grade Mark

Specification

Part Description

Material

Nom Size Range

Yield (min psi)

Tensile (min psi)

Proof Load (psi)

No Grade Mark

SAE J995 Grade 2

Hot or Cold Forged Nut

Carbon Steel

¼ and Larger

 

 

90,000

SAE J995 Grade 5

Hot or Cold Forged Nuts

Carbon Steel

¼ and Larger

 

 

120,000 (UNC)

109,000 (UNF)

SAE J995 Grade 8

Hot or Cold Forged Nuts

Carbon Steel

Quenched and Tempered

¼ and Larger

 

 

150,000

2H

ASTM A194

Hot or Cold Forged Nuts for High Pressure and High Temperature Service

Medium Carbon Steel

Quenched and Tempered

¼ and Larger

 

 

175,000

4

ASTM A194

Hot or Cold Forged Nuts for High Pressure and High Temperature Service

Medium Carbon Alloy Steel Quenched and Tempered

¼ and Larger

 

 

175,000

7

ASTM A194

Hot or Cold Forged Nuts for High Pressure and High Temperature Service

Medium Carbon Alloy Steel Quenched and Tempered

¼ and Larger

 

 

175,000

8

ASTM A194

Hot or Cold Forged Nuts for High Pressure and High Temperature Service

AISI 304

¼ and Larger

 

 

80,000

75,000

8M

ASTM A194

Hot or Cold Forged Nuts for High Pressure and High Temperature Service

AISI 316

¼ and Larger

 

 

80,000

75.000

8T

ASTM A194

Hot or Cold Forged Nuts for High Pressure and High Temperature Service

AISI 321

¼ and Larger

 

 

80,000

75.000