Thread Size - Reference Chart
To identify a thread size, measure the exterior male thread diameter or the internal female thread diameter, then match it with the corresponding measurement column MM; this will give you the proper thread size conversion.
|
Male O.D. |
MM |
Female I.D. |
|---|---|---|
|
|
8.5 |
3/8” -24 UNF |
|
|
8.7 |
1/8” -28 GAS |
|
|
9.2 |
1/8” -27 NPSM |
|
3/8” -24 UNF |
9.4 |
|
|
1/8” -27 GAS |
9.6 |
|
|
M10x1 |
10.0 |
7/16” -20 UNF |
|
1/8” -27 NPTF |
10.4 |
|
|
|
10.5 |
M12 x 1.5 |
|
7/16” -20 UNF |
11.0 |
|
|
|
11.4 |
1/2" -20 UNF |
|
|
11.6 |
1/4” -19 GAS |
|
M12 x 1.5 |
12.0 |
|
|
|
12.2 |
¼” -18 NPSM |
|
1/2” -20 UNF |
12.5 |
M14 x 1.5 |
|
1/4” -19 UNF |
13.0 |
9/16” -18 UNF |
|
1/4" -18 NPTF |
13.9 |
|
|
M14 x 1.5 |
14.0 |
|
|
9/16” -18 UNF |
14.2 |
|
|
|
14.5 |
M16 x 1.5 |
|
|
14.6 |
5/8” -18 UNF |
|
|
15.1 |
3/8” -19 GAS |
|
|
15.5 |
3/8” -18 NPSM |
|
5/8” -18 UNF |
15.7 |
|
|
M16 x 1.5 |
16.0 |
1 1/16” -16 UN |
|
|
16.5 |
18 x 1.5 |
|
3/8” -19 GAS |
16.6 |
|
|
3/8” -18 NPTF |
17.3 |
|
|
1 1/16” -16 UNF |
17.4 |
3/4” -16 UNF |
|
M18 x 1.5 |
18.0 |
|
|
|
18.5 |
M20 x 1.5 |
|
|
18.8 |
1/2" -14 GAS |
|
¾” -16 UNF |
19.0 |
13/16” -16 UNF |
|
Male O.D. |
MM |
Female I.D. |
|---|---|---|
|
|
19.2 |
1/2” -14 NPSM |
|
M20 x 1.5 |
20.0 |
|
|
|
20.3 |
7/8” – 14 UNF |
|
13/16” -16 UN |
20.5 |
M22 x 1.5 |
|
1/2" -14 GASE |
20.8 |
|
|
|
21.1 |
5/8” -14 GAS |
|
1/2” -14 NPTF |
21.6 |
|
|
M22 x 1.5 |
22.0 |
|
|
7/8” -14 UNF |
22.2 |
|
|
|
22.5 |
M24 x 1.5 |
|
5/8” -14 GAS |
22.8 |
|
|
|
23.8 |
1” -14 UNS |
|
M24 x 1.5 |
24.0 |
|
|
|
24.5 |
M26 x 1.5 |
|
|
24.6 |
3/4” -14 GAS-NPSM |
|
|
24.9 |
1 1/16” -12 UN |
|
|
25.0 |
M27 x 2 |
|
1” -14 UNS |
25.3 |
|
|
M26 x 1.5 |
26.0 |
|
|
3/4” -14 NPTF |
26.3 |
|
|
M27 x 2 |
26.7 |
|
|
|
26.9 |
|
|
|
27.0 |
|
|
M30 x 2 |
27.9 |
1 3/16” -12 UN |
|
1 3/16” -12 UN |
28.0 |
M30 x 2 |
|
|
30.0 |
|
|
|
30.1 |
|
|
|
30.7 |
1” 11.5 NPSM |
|
|
30.9 |
1” – 11 GAS |
|
|
31.0 |
M33 x 2 |
|
|
32.1 |
1 5/16” -12UN |
|
M33 x 2 |
33.0 |
|
|
Male O.D. |
MM |
Female I.D. |
|---|---|---|
|
1” -11 GAS |
33.2 |
|
|
1 5/16” -12 UN |
33.3 |
|
|
1” -11.5 NPTF |
33.8 |
|
|
|
34.0 |
M36 x 2 |
|
M36 x 2 |
36.0 |
|
|
|
39.1 |
1 5/8” -12 UN |
|
|
39.4 |
1 1/4” -11.5 NPSM |
|
|
39.5 |
1 1/4” -11 GAS |
|
|
40.0 |
M42 x 2 |
|
1 5/8” -12 UN |
41.1 |
|
|
1 1/4” -11 GAS |
41.7 |
|
|
M42 x 2 |
42.0 |
|
|
1 1/4” -11.5 NPTF |
42.4 |
|
|
|
43.0 |
M45 x 2 |
|
M45 x 2 |
45.0 |
|
|
|
45.2 |
1 1/2” -11 GAS |
|
|
45.5 |
1 1/2” -11.5 NPSM |
|
|
45.7 |
1 7/8” -12 UN |
|
|
46.0 |
M48 x 2 |
|
1 7/8” -12 UN |
47.5 |
|
|
1 1/2” -11 GAS |
47.7 |
|
|
M48 x 2 |
48.0 |
|
|
1 1/2” -11.5 NPTF |
48.5 |
|
|
|
48.8 |
2” -12 UN |
|
|
50.0 |
M52 x 2 |
|
2” -12 UN |
50.7 |
|
|
M52 x 2 |
52.0 |
|
|
|
57.0 |
2” -11 GAS |
|
2” -11 GAS |
59.4 |
|
|
2” -11.5 NPTF |
60.6 |
|
|
|
61.2 |
2 1/2” -12 UN |
|
2 1/2” -12 UN |
63.3 |
|
VISIT OUR LOCATION
CANADA
DTC Industrial Sales, Ltd.
150 McLevin Ave Unit#9, Scarborough, ON M1B 4Z7 Canada
- 416-321-0990
- 1-844-DTC-HOSE
- 416-321-2610
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In the Field
Here’s one of our technicians hard at work securing a load for transport.
Fleming College Diorama
Here are the educational boards that we made in conjunction with Anchor Shoring.
These boards were prepared for the Drilling & Blasting course and are currently hanging in the hall of the school.
