Применялась ранее для механических оптических приборов

|
Наружный диаметр, мм |
Диаметр сверления, мм |
Шаг, мм |
Витков на 25 мм |
|
3,000 |
2,107 |
0,625 |
40 |
|
3,500 |
2,607 |
0,625 |
40 |
|
4,000 |
2,978 |
0,715 |
35 |
|
4,500 |
3,478 |
0,715 |
35 |
|
5,000 |
3,808 |
0,834 |
30 |
|
5,500 |
4,308 |
0,834 |
30 |
|
6,000 |
4,808 |
0,834 |
30 |
|
7,000 |
5,570 |
1,000 |
25 |
|
8,000 |
6,670 |
1,000 |
25 |
|
9,000 |
7,213 |
1,250 |
20 |
|
10,000 |
8,213 |
1,250 |
20 |
|
11,000 |
9,213 |
1,250 |
20 |
|
12,000 |
9,897 |
1,471 |
17 |
|
13,000 |
10,897 |
1,471 |
17 |
|
14,000 |
11,535 |
1,724 |
14,5 |
|
15,000 |
12,535 |
1,724 |
14,5 |
|
16,000 |
13,141 |
2,000 |
12,5 |
|
18,000 |
15,141 |
2,000 |
12,5 |
|
20,000 |
16,426 |
2,500 |
10 |
|
22,000 |
18,426 |
2,500 |
10 |
|
24,000 |
20,026 |
2,780 |
9 |
|
26,000 |
22,026 |
2,780 |
9 |
|
28,000 |
23,532 |
3,125 |
8 |
|
30,000 |
25,532 |
3,125 |
8 |
|
32,000 |
26,895 |
3,571 |
7 |
|
34,000 |
28,895 |
3,571 |
7 |
|
38,000 |
32,043 |
4,167 |
6 |
|
42,000 |
36,043 |
4,167 |
6 |
|
46,000 |
38,852 |
5,000 |
5 |
|
50,000 |
42,852 |
5,000 |
5 |
