Table for quick identification of male threads
|
Measurement of the
external Ø
mm
|
Male thread
( type of seal )
|
Measurement of the
external Ø
mm
|
Male thread
( type of seal )
|
| 7,77 ÷ 7,95 |
/ 6” – 24 UNF (JIC) |
29,83 ÷ 30,16 |
3/ 6” 12 UN (JIC-ORFS) |
| 9,22 ÷ 9,53 |
3/8” – 24 UNF (JIC) |
30 |
M 30 x 2 o M 30 x 1,5 |
| 9,7 |
/8 ” – 28 BSPP o BSPT |
30,2 |
/8” 14 BSPP |
| 10 |
M 10 x 1 |
31,57 ÷ 31,75 |
/4” 12 UN (SAE 45°) |
| 10,2 |
/8” – 27 NPTF |
33,00 ÷ 33,34 |
/ 6” 12UN (JIC) |
| 10,77 ÷ 11,1 |
/ 6” 20 UNF (JIC) |
33,1 |
” – 11,5 NPTF |
| 12 |
M 12 x 1,5 |
33,2 |
” 11 BSPP o BSPT |
| 12,36 ÷ 12,7 |
/ 20 UNF (JIC) |
33 |
M 33 x 1,5 |
| 13,1 |
/4 19 BSPP o BSPT |
34,44 ÷ 34,93 |
3/8” 12 UN (SAE45°) |
| 13,5 |
/4 18 NPTF |
36 |
M 36 x 2 |
| 14 |
M 14 x 1,5 |
36,18 ÷ 36,51 |
/ 6” – 12 UN (ORFS) |
| 13,92 ÷ 14,29 |
/ 6” 8 S) |
37,9 |
/8” 11 BSPP |
| 15,52 ÷ 15,88 |
/8” 18 UNF (SAE 45°) |
38 |
M 38 x 1,5 |
| 16 |
M 16 x 1,5 |
40,94 ÷ 41,28 |
/8” – 12 UN (JIC) |
| 16,6 |
3/8” 19 BSPP |
41,9 |
/4” 11,5 NPTF |
| 16,8 |
3/8” 19 BSPT |
41,9 |
/4” 11 BSPP o BSPT |
| 17 |
3/8” 18 NPTF |
42 |
M 42 x2 |
| 17,19 ÷ 17,46 |
/ 6” – 16 UN (ORFS) |
42,53 ÷ 42,86 |
/ 6” 12UN (ORFS) |
| 18 |
M18 x 1,5 |
44,3 |
3/8” 11 BSPP |
| 18,65 ÷ 19,1 |
3/4 16 UNF (JIC) |
45 |
M 45 x 1,5 o M 45 x 2 |
| 20 |
M 20 x 1,5 |
47,29 ÷ 47,63 |
/8” 12 UNF ( JIC) |
| 20,36 ÷ 20,64 |
3/ 6” – 16 UNF (ORFS) |
47,8 |
/ ” 11 BSPP o BSPT |
| 21 |
/ 14 BSPP o BSPT |
48 |
/ ” 11,5 NPTF |
| 21,1 |
/ 14 NPTF |
50,46 ÷ 50,8 |
” – 12 UNF (ORFS) |
| 21,79 ÷ 22,23 |
/8” 14 UNF (JIC) |
52 |
M 52 x 1,5 o M 52 x 2 |
| 22 |
M 22 x 1,5 |
53,8 |
3/4” 11BSPP |
| 22,9 |
/8” 14 BSPP |
59,6 |
” 11 BSPP o BSPT |
| 24 |
M 24 x 1,5 |
60 |
” 11,5 NPTF |
| 24,97÷ 25,4 |
” – 14 UNS (ORFS) |
63,16 ÷ 63,5 |
/ ” 12 UN (JIC) |
| 26 |
M 26 x 1,5 |
65,7 |
/4” 11 BSPP |
| 26,4 |
3/4 14 BSPP o BSPT |
69,4 |
3/8” 11 BSPP |
| 26,5 |
3/4 14 NPTF |
75,2 |
/ ” 11 BSPP |
| 26,64 ÷ 27,0 |
/ 6” 12 UNF (JIC) |
81,5 |
3/4” 11 BSPP |
| 27 |
M 27 x 1,5 |
87,9 |
3” 11 BSPP |
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