Home | Products | Dealers | Project Car | Contact Us | Sport Suspensions | Catalogues

Technical Specifications and Torque Tables

NPT Threads
Use the profiles below to determine the correct NPT thread before ordering. The corresponding chart displays the pipe thread size, the number of threads per inch, the inner diameter of the fitting, and the closest AN thread.
Pipe Thread Size Threads Per Inch Fitting I.D. Closest AN fitting size
1/8" 27 1/8" 4
1/4" 18 1/4" 6
3/8" 18 3/8" 8
1/2" 14 1/2" 10
3/4" 14 3/4" 12
1" 11.5 1" 16
1 1/4" 11.5 1 1/4" 20
A-N Threads
Use the profiles below to determine the correct A-N thread before ordering. The corresponding chart displays the outer diameter of the metal tube and thread size.
A-N Size Metal Tube O.D. Thread Size
3 3/16" 3/8-24 UNJF
4 1/4" 7/16-20 UNJF
6 3/8" 9/16-18 UNJF
8 1/2" 3/4-16 UNJF
10 5/8" 7/8-14 UNJF
12 3/4" 1 1/16-12 UNJF
16 1" 1 5/16-12 UNJF
20 1 1/4" 1 5/8-12 UNJF

Size Chart 

A-N Thread Pipe Thread B-Nut Hex
A-N Size Tube Diameter Thread Size (S.A.E) Pipe Thread Threads Per Inch A-N Size Hex Diameter
-2 1/8" 5/16-24 1/16" 27
-3 3/16" 3/8-24 1/8" 27 #3 1/2"
-4 1/4" 7/16-20 1/4" 18 #4 9/16"
-6 3/8" 9/16-18 3/8" 18 #6 11/16"
-8 1/2" 3/4-16 1/2" 14 #8 7/8"
-10 5/8" 7/8-14 3/4" 14 #10 1"
-12 3/4" 1 1/16-12 1" 11 #12 1 1/4"
-16 1" 1 5/16-12 #16 1 1/2"
-20 1 1/4" 1 5/8-12 #20 1 7/8"
-24 1 1/2" 1 7/8-12
-28 1 3/4" 2 1/4-12
-32 2" 2 1/2-12

 

 

Torque Specifications
Fitting Size
Max. Torque
[ft-lbs]
3
8.75
4
11.5
6
16.25
8
29
10
35
12
45
16
70
20
85