Drill size cutting taps
P
P
60°
60°
ISO Metric coarse thread DIN 8140 Part 2
8-UN thread ASME B1.1
Maximum core diam. (tol. 3B) [mm] D1
Drill size* [mm]
Pitch [TPI]
Drill size* [mm]
D
D
EG-M 3
3,15
8 8 8 8 8 8 8 8
25,519 28,694 31,869 35,044 38,219 41,394 44,569 47,744
25,4 28,6 31,8 35,0 38,1 41,3 44,5 47,7
1 1/8" 1 1/4" 13/8" 1 1/2" 1 5/8" 1 3/4" 1 7/8"
4 5 6 8
4,2
5,25
6,3 8,4
10 12 14 16
10,5 12,5 14,5 16,5
2"
P
P
60°
60°
Unified coarse threa d UNC ASME - B1.1
Unified fine thread UNF ASME - B1.1
Maximum core diam. (tol. 3B) [mm] D1
Maximum core diam. (tol. 3B) [mm] D1
Pitch [TPI]
Pitch [TPI]
Drill size* [mm]
Drill size* [mm]
D
D
64 56
1,582 1,872 2,146 2,385 2,697 2,896 3,528 3,950 4,590 5,250 6,680 8,082 9,441 10,881 12,301 13,693 16,624 19,520 22,344 25,082 28,258 30,851 34,026 39,560 45,367
1,55 1,85
1,306 1,613 1,913 2,197 2,459 2,741 3,012 3,597 4,168 4,717 5,563 6,995 8,565 9,947 11,524 12,969 14,554 17,546 20,493 23,363 26,538 29,713 32,888 36,063
1,25 1,55 1,85
Nr. 1 Nr. 2
Nr. 0 80
72 64
Nr. 1 Nr. 2
2,1
Nr. 3 48
40 40
2,35 2,65 2,85
2,15
Nr. 4 Nr. 5
Nr. 3 56
48
2,4 2,7
Nr. 4
Nr. 6 32 Nr. 8 32
Nr. 5 44 Nr. 6 40 Nr. 8 36 Nr. 10 32 Nr. 12 28
3,5 3,9 4,5 5,1 6,6
2,95
24 24 20
3,5 4,1 4,6 5,5 6,9 8,5 9,9
Nr. 10 Nr. 12
1/4"
18 16 14 13 12
28 24 24 20 20
5/16" 3/8" 7/16"
1/4"
8
5/16" 3/8" 7/16"
9,4
10,8 12,2 13,5 16,5 19,5
1/2"
11,5 12,9 14,5 17,5 20,4
9/16"
1/2"
11
18 18 16 14 12 12 12 12 12
5/8" 3/4" 7/8"
9/16"
10
5/8" 3/4" 7/8"
9 8 7 7 6 6 5
22,25
1"
25 28
23,25
1 1/8" 1 1/4" 1 3/8" 1 1/2" 1 3/4"
1"
26,5 29,5
1 1/8" 1 1/4" 1 3/8" 1 1/2"
30,75
34
32,75
39,5
36
4,5
45
2"
(*) Drill size according to DIN 336
251 vergnano |
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