skip to Main Content
Sunset Crane Photography Going Viral

SAE J995 SPECIFICATION

SAE J995 covers the mechanical and chemical requirements for inch series nuts in three grades used in automotive and related industries in sizes to 1-1/2” inclusive

 

 

For quick Quote/Information on SAE J995 Nuts, please Contact Us

 

 

J995 Mechanical Properties

 

Grade
Nominal Size, inches
Proofload, UNC and UN 8 Threads, psi
Rockwell Hardness
2
1/4 thru 1-1/2
90,000
C32 Max
5
1/4 thru 1
120,000
C32 Max
Over 1 thru 1-1/2
105,000
C32 Max
8
1/4 thru 5/8
150,000
C24-C32
Over 5/8 thru 1
150,000
C26-C34
Over 1 thru 1-1/2
150,000
C26-C36
*Values listed are not normally applicable to jam, slotted, castle, heavy or thick nuts.

 

J995 Chemical Requirements

 

Grade
Carbon, %
Phosphorus, %
Manganese, %
Sulfur, %
2
0.47 max
0.120 max
-
0.15 max
5
0.55 max
0.050 max
0.30 min
0.15 max
8
0.55 max
0.040 max
0.30 min
0.05 max

 

 

J995 Tensile Stress Area

 

Thread, UNC
UNC Stress Area, sq inches
Thread, 8TPI
8 TPI Stress Area, sq inches
1/2-13
0.1419


5/8-11
0.226


3/4-10
0.334


7/8-9
0.462


1-8
0.606
1-8
0.606
1-1/8-7
0.763
1-1/8-8
0.790
1-1/4-7
0.969
1-1/4-8
1.000
1-3/8-6
1.155
1-3/8-8
1.233
1-1/2-6
1.405
1-1/2-8
1.492
To calculate individual nut proofload value, simply multiply the tensile stress area by the appropriate psi proofload value.