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WIZARDRY: LE Système Impérial, La visserie. WHITWORTH BSW
BSF
|
L'angle est de 55°
BSW::
British Standart Whitworth:
Imaginé et standardisé en 1841 à Manchester par Sir Joseph
Whitworth(1803-1887). Norme BS-84 1956 table 2
| Désignation
du filetage. |
Pas
en mm |
Diamètre
nominal. |
Diamètre
sur flancs. |
Diamètre
de perçage. |
|
|
|
1/4" - 20f |
1.27000 |
6.350 |
5.537 |
4.724 |
|
5/16" - 18f |
1.4111 |
7.938 |
7.033 |
6.129 |
|
3/8" - 16f |
1.5785 |
9.525 |
8.509 |
7.493 |
|
7/16" - 14f |
1.8143 |
11.113 |
9.952 |
8.791 |
|
1/2" - 13f |
1.9538 |
12.7 |
11.344 |
9.987 |
|
9/16" - 12f |
2.1167 |
14.288 |
12.931 |
11.575 |
|
5/8" - 11f |
2.3091 |
15.875 |
14.397 |
12.918 |
|
3/4" - 10f |
2.5400 |
19.050 |
17.425 |
15.799 |
|
7/8" - 9f |
2.822 |
22.225 |
20.419 |
18.613 |
|
1" - 8f |
3.175 |
25.400 |
23.368 |
21.336 |
|
1.1/8" - 7f |
3.6286 |
28.575 |
26.251 |
23.927 |
|
1.1/4" - 7f |
3.6286 |
31.750 |
29.426 |
27.102 |
|
1.1/2" - 6f |
4.233 |
38.100 |
35.390 |
32.680 |
|
1.3/4" - 5f |
5.0800 |
44.450 |
41.196 |
37.943 |
BSF::
British
Standart Fine. Utilisé
depuis 1908 Norme BS-84 1956 table 12
| Désignation
du filetage. |
Pas
en mm |
Diamètre
nominal. |
Diamètre
sur flancs. |
Diamètre
de perçage. |
|
|
|
1/4" - 28f |
0.9071 |
6.350 |
5.761 |
5.359 |
|
5/16" - 24f |
1.0583 |
7.938 |
7.249 |
6.782 |
|
3/8" - 24f |
1.0583 |
9.525 |
8.837 |
8.382 |
|
7/16" - 20f |
1.2700 |
11.113 |
10.287 |
9.728 |
|
1/2" - 20f |
1.2700 |
12.7 |
11.875 |
11.328 |
|
9/16" - 18f |
1.4111 |
14.288 |
13.371 |
12.751 |
|
5/8" - 18f |
1.4111 |
15.875 |
14.958 |
14.351 |
|
3/4" - 16f |
1.5875 |
19.050 |
18.019 |
17.323 |
|
7/8" - 14f |
1.8143 |
22.225 |
21.046 |
20.269 |
|
1" - 12f |
2.1167 |
25.400 |
24.026 |
23.114
|
|
1.1/8" - 12f
|
2.1167 |
28.575
|
27.201
|
26.289
|
|
1.1/4" - 7f
|
2.1167 |
31.750
|
30.376
|
29.4645
|
|
1.3/8" - 6f
|
2.1167 |
34.925
|
33.551
|
32.639
|
|
1.1/2" - 6f
|
2.1167 |
38.100
|
36.726
|
35.814
|
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Outillage
général