Tabelas Técnicas: Diāmetro de Furos para Roscar



M Rosca Métrica grossa
M Rosca mm Diâmetro do Núcleo Diâmetro da Broca
Limites
Máximo Mínimo
3 X 0,50 2,599 2,459 2,5
3,5 X 0,60 3,010 2,850 2,9
4 X 0,70 3,422 3,242 3,3
4,5 X 0,75 3,878 3,688 3,7
5 X 0,80 4,334 4,134 4,2
6 X 1,00 5,153 4,917 5,0
7 X 1,00 6,153 5,917 6,0
8 X 1,25 6,912 6,647 6,8
9 X 1,50 7,912 7,647 7,8
10 X 1,50 8,676 8,376 8,5
11 X 1,50 9,676 9,376 9,5
12 X 1,75 10,441 10,106 10,2
14 X 2,00 12,210 11,835 12,0
16 X 2,00 14,210 13,835 14,0
18 X 2,50 15,744 15,294 15,5
20 X 2,50 17,744 17,294 17,5
22 X 2,50 19,744 19,294 19,5
24 X 3,00 21,252 20,752 21,0
27 X 3,00 24,252 23,752 24,0
30 X 3,50 26,771 26,211 26,5
33 X 3,50 29,771 29,211 29,5
36 X 4,00 32,270 31,670 32,0
39 X 4,00 35,270 34,670 35,0
42 X 4,50 37,799 37,129 37,5
45 X 4,50 40,799 40,129 40,5
48 X 5,00 43,297 42,587 43,0
52 X 5,00 47,297 46,587 47,0
56 X 5,50 50,796 50,046 50,5


BSW Rosca Whitworth Grossa
Rosca Fios por pol. Diâmetro do Núcleo Diâmetro da Broca
Limites
Máximo Mínimo
1/8" 40 2,590 2,468 2,5
5/32" 32 3,211 3,058 3,1
3/16" 24 3,744 3,540 3,6
7/32" 24 4,538 4,334 4,4
1/4" 20 5,224 4,980 5,1
5/16" 18 6,661 6,389 6,5
3/8" 16 8,052 7,747 7,9
7/16" 14 9,379 9,030 9,2
1/2" 12 10,610 10,203 10,5
9/16" 12 12,176 11,769 12,0
5/8" 11 13,598 13,154 13,4
3/4" 10 16,538 16,050 16,4
7/8" 9 19,411 18,868 19,25
1" 8 22,185 21,575 22,0
1,1/8" 7 24,879 24,182 24,7
1,1/4" 7 28,054 27,357 27,75
1,3/8" 6 30,555 29,741 30,2
1,1/2" 6 33,730 32,916 33,5
1,5/8" 5 35,921 34,954 35,5
1,3/4" 5 39,096 38,120 38,5
1,7/8" 4,1/2 41,648 40,563 41,5
2" 4,1/2 44,823 43,738 44,5
2,1/4" 4 50,420 49,200 50,0
2,1/2" 4 56,770 55,550 56,6
2,3/4" 3,1/2 62,108 60,714 62,0
3" 3,1/2 68,459 67,065 68,0