Click
here for a guide on how to properly measure threads.
| Thread Chart |
Dash Size:
|
2 |
3 |
4 |
5 |
6 |
7 |
8 |
10 |
12 |
14 |
16 |
20 |
24 |
32 |
40 |
48 |
Tube
O.D. |
1/8 |
3/16 |
1/4 |
5/16 |
3/8 |
7/16 |
1/2 |
5/8 |
3/4 |
7/8 |
1 |
1-1/4 |
1-1/2 |
2 |
2-1/2 |
3 |
Hose
I.D. |
1/8 |
3/16 |
1/4 |
5/16 |
3/8 |
|
1/2 |
5/8 |
3/4 |
|
1 |
1-1/4 |
1-1/2 |
2 |
2-1/2 |
3 |
JIC 37°
Flare Thread |
5/16-24 |
3/8-24 |
7/16-20 |
1/2-20 |
9/16-18 |
|
3/4-16 |
7/8-14 |
1-1/16-12 |
1-3/16-12 |
1-5/16-12 |
1-5/8-12 |
1-7/8-12 |
2-1/2-12 |
3-12 |
3-1/2-12 |
SAE O-Ring
Thread |
5/16-24 |
3/8-24 |
7/16-20 |
1/2-20 |
9/16-18 |
|
3/4-16 |
7/8-14 |
1-1/16-12 |
1-3/16-12 |
1-5/16-12 |
1-5/8-12 |
1-7/8-12 |
2-1/2-12 |
|
|
NPTF Pipe
Thread |
1/8-27 |
|
1/4-18 |
|
3/8-18 |
|
1/2-14 |
|
3/4-14 |
|
1-11-1/2 |
1-1/4-11-1/2 |
1-1/2-11-1/2 |
2-11-1/2 |
2-1/2-8 |
3-8 |
NPSM Swivel
Thread |
1/8-27 |
|
1/4-18 |
|
3/8-18 |
|
1/2-14 |
|
3/4-14 |
|
1-11-1/2 |
1-1/4-11-1/2 |
1-1/2-11-1/2 |
2-11-1/2 |
|
|
Flat Face
Thread |
|
|
9/16-18 |
|
11/16-18 |
|
13/16-18 |
1-14 |
1-3/16-12 |
|
1-7/16-12 |
1-11/16-2 |
2-12 |
|
|
|
Code 61 Flange
Head O.D. |
|
|
|
|
|
|
1.19 |
1.335 |
1.50 |
|
1.75 |
2.00 |
2.38 |
2.81 |
3.31 |
4.00 |
Code 62 Flange
Head O.D. |
|
|
|
|
|
|
1.25 |
|
1.62 |
|
1.88 |
2.12 |
2.50 |
3.12 |
|
|
British Thread
BSPP/BSPT |
1/8-28 |
|
1/4-19 |
|
3/8-19 |
|
1/2-14 |
|
3/4-14 |
|
1-11 |
1-1/4-11 |
1-1/2-11 |
|
|
|
Metric
Thread |
10
M10x1.0 |
12
M14x1.5 |
14
M16x1.5 |
16
M16x1.5 |
18
M18x1.5 |
20
M20x1.5 |
22
M22x1.5 |
24
M24x1.5 |
26
M26x1.5 |
27
M27x2.0 |
30
M30x2.0 |
33
M33x2.0 |
36
M36x2.0 |
42
M42x2.0 |
48
M48x2.0 |
|
|
Copper/Nylon
Air Brake Thread |
|
|
7/16-24 |
|
17/32-24 |
|
11/16-20 |
13/16-18 |
1-18 |
|
|
|
|
|
|
|
SAE 45°
Flare Thread |
5/16-24 |
3/8-24 |
7/16-20 |
1/2-20 |
5/8-18 |
11/16-24 |
3/4-16 |
7/8-14 |
1-1/16-14 |
|
|
|
|
|
|
|
Inverted
Flare Thread |
5/16-28 |
3/8-24 |
7/16-24 |
1/2-20 |
5/8-18 |
11/16-18 |
3/4-18 |
7/8-18 |
1-1/16-16 |
|
|
|
|
|
|
|
Compression
Thread |
5/16-24 |
3/8-24 |
7/16-24 |
1/2-24 |
9/16-24 |
5/8-24 |
11/16-24 |
13/16-18 |
1-18 |
|
|
|
|
|
|
|
|
