|
Core Hole Drill Sizes
Metric Standard Thread Whitworth Thread B.S.P. Thread PG Thread UNC Thread 2B UNF Thread 2B UNEF Thread 2B BSF Thread BA Thread |
|
ISO2306 DIN 336 |
Pitch |
Mini |
Maxi |
Drill |
| |
Metric Standard Thread 6H |
|
| 1 |
0,25 |
0,729 |
0,785 |
0,75 |
| 1,1 |
0,25 |
0,829 |
0,885 |
0,85 |
| 1,2 |
0,25 |
0,929 |
0,985 |
0,95 |
| 1,4 |
0,3 |
1,075 |
1,142 |
1,1 |
| 1,6 |
0,35 |
1,221 |
1,321 |
1,25 |
| 1,7 |
0,35 |
1,256 |
1,346 |
1,3 |
| 1,8 |
0,35 |
1,421 |
1,521 |
1,45 |
| 2 |
0,4 |
1,567 |
1,679 |
1,6 |
| 2,2 |
0,45 |
1,713 |
1,838 |
1,75 |
| 2,3 |
0,4 |
1,795 |
1,920 |
1,9 |
| 2,5 |
0,45 |
2,013 |
2,138 |
2,05 |
| 2,6 |
0,45 |
2,036 |
2,176 |
2,1 |
| 3 |
0,5 |
2,459 |
2,599 |
2,5 |
| 3,5 |
0,6 |
2,850 |
3,010 |
2,9 |
| 4 |
0,7 |
3,242 |
3,422 |
3,3 |
| 4,5 |
0,75 |
3,688 |
3,878 |
3,75 |
| 5 |
0,8 |
4,134 |
4,334 |
4,2 |
| 6 |
1 |
4,917 |
5,153 |
5 |
| 7 |
1 |
5,917 |
6,153 |
6 |
| 8 |
1,25 |
6,647 |
6,912 |
6,8 |
| 9 |
1,25 |
7,647 |
7,912 |
7,8 |
| 10 |
1,5 |
8,376 |
8,676 |
8,5 |
| 11 |
1,5 |
9,376 |
9,676 |
9,5 |
| 12 |
1,75 |
10,106 |
10,441 |
10,2 |
| 14 |
2 |
11,835 |
12,210 |
12 |
| 16 |
2 |
13,835 |
14,210 |
14 |
| 18 |
2,5 |
15,294 |
15,744 |
15,5 |
| 20 |
2,5 |
17,294 |
17,744 |
17,5 |
| 22 |
2,5 |
19,294 |
19,744 |
19,5 |
| 24 |
3 |
20,752 |
21,252 |
21 |
| 27 |
3 |
23,752 |
24,252 |
24 |
| 30 |
3,5 |
26,211 |
26,771 |
26,5 |
| 33 |
3,5 |
29,211 |
29,771 |
29,5 |
| 36 |
4 |
31,670 |
32,270 |
32 |
|
|
DIN 11 Blatt 4 |
Threads 1" |
Mini |
Maxi |
Drill |
| |
Whitworth Thread |
|
| 1/8 |
40 |
2,362 |
2,590 |
2,5 |
| 3/16 |
24 |
3,406 |
3,743 |
3,6 |
| 1/4 |
20 |
4,744 |
5,224 |
5,0 |
| 5/16 |
18 |
6,151 |
6,661 |
6,5 |
| 3/8 |
16 |
7,512 |
8,052 |
7,9 |
| 7/16 |
14 |
8,809 |
9,379 |
9,2 |
| 1/2 |
12 |
10,015 |
10,610 |
10,4 |
| 5/8 |
11 |
12,948 |
13,598 |
13,4 |
| 3/4 |
10 |
15,831 |
16,538 |
16,25 |
| 7/8 |
9 |
18,647 |
19,411 |
19,25 |
| 1 |
8 |
21,375 |
22,185 |
22 |
| 1 1/8 |
7 |
23,976 |
24,879 |
24,5 |
| 1 1/4 |
7 |
27,151 |
28,054 |
27,75 |
| 1 3/8 |
6 |
29,558 |
30,555 |
30,25 |
| 1 1/2 |
6 |
32,733 |
33,730 |
33,5 |
| 1 5/8 |
5 |
34,834 |
35,921 |
35,5 |
| 1 3/4 |
5 |
38,009 |
39,096 |
38,5 |
| 1 7/8 |
4 1/2 |
40,468 |
41,648 |
41,25 |
| 2 |
4 1/2 |
43,643 |
44,823 |
44,5 |
|
|
| ISO 228 |
Threads 1" |
Mini |
Maxi |
Drill |
| |
B.S.P. Thread |
|
| 1/8 |
28 |
8,566 |
8,848 |
8,7 |
| 1/4 |
19 |
11,445 |
11,890 |
11,6 |
| 3/8 |
19 |
14,950 |
15,395 |
15 |
| 1/2 |
14 |
18,631 |
19,172 |
19 |
| 5/8 |
14 |
20,587 |
21,128 |
20,75 |
| 3/4 |
14 |
24,117 |
24,658 |
24,5 |
| 7/8 |
14 |
27,877 |
28,418 |
28 |
| 1 |
11 |
30,291 |
30,931 |
30,5 |
| 1 1/8 |
11 |
34,939 |
35,579 |
35 |
| 1 1/4 |
11 |
38,952 |
39,592 |
39,5 |
| 1 3/8 |
11 |
41,365 |
42,005 |
41,5 |
| 1 1/2 |
11 |
44,845 |
45,485 |
45 |
| 1 3/4 |
11 |
50,788 |
51,428 |
51 |
| 2 |
11 |
56,656 |
57,296 |
57 |
|
|
| DIN 40430 |
Threads 1" |
Mini |
Maxi |
Drill |
| |
PG Thread |
|
| 7 |
20 |
11,30 |
11,45 |
11,4 |
| 9 |
18 |
13,86 |
14,01 |
14 |
| 11 |
18 |
17,26 |
17,41 |
17,25 |
| 13,5 |
18 |
19,06 |
19,21 |
19 |
| 16 |
18 |
21,16 |
21,31 |
21,25 |
| 21 |
16 |
26,78 |
27,03 |
26,75 |
| 29 |
16 |
35,48 |
35,73 |
35,5 |
| 36 |
16 |
45,48 |
45,73 |
45,5 |
| 42 |
16 |
52,48 |
52,73 |
52,5 |
| 48 |
16 |
57,78 |
58,03 |
57,8 |
|
|
ANSI B1.1 |
Threads 1" |
Mini |
Maxi |
Drill |
| |
UNC Thread 2B |
|
| 1 |
64 |
1,425 |
1,582 |
1,5 |
| 2 |
56 |
1,694 |
1,872 |
1,8 |
| 3 |
48 |
1,941 |
2,146 |
2 |
| 4 |
40 |
2,156 |
2,385 |
2,3 |
| 5 |
40 |
2,487 |
2,697 |
2,6 |
| 6 |
32 |
2,642 |
2,896 |
2,7 |
| 8 |
32 |
3,302 |
3,531 |
3,4 |
| 10 |
24 |
3,683 |
3,962 |
3,8 |
| 12 |
24 |
4,343 |
4,597 |
4,5 |
| 1/4 |
20 |
4,978 |
5,258 |
5,1 |
| 5/16 |
18 |
6,401 |
6,731 |
6,5 |
| 3/8 |
16 |
7,798 |
8,153 |
7,9 |
| 7/16 |
14 |
9,144 |
9,550 |
9,3 |
| 1/2 |
13 |
10,592 |
11,024 |
10,7 |
| 9/16 |
12 |
11,989 |
12,446 |
12,3 |
| 5/8 |
11 |
13,386 |
13,868 |
13,5 |
| 3/4 |
10 |
16,307 |
16,840 |
16,5 |
| 7/8 |
9 |
19,177 |
19,761 |
19,3 |
| 1 |
8 |
21,971 |
22,606 |
22,25 |
|
|
ANSI B1.1 |
Threads 1" |
Mini |
Maxi |
Drill |
| |
UNF Thread 2B |
|
| 0 |
80 |
1,18 |
1,306 |
1,2 |
| 1 |
72 |
1,473 |
1,613 |
1,5 |
| 2 |
64 |
1,755 |
1,913 |
1,8 |
| 3 |
56 |
2,024 |
2,197 |
2,1 |
| 4 |
48 |
2,271 |
2,459 |
2,4 |
| 5 |
44 |
2,550 |
2,741 |
2,6 |
| 6 |
40 |
2,819 |
3,023 |
2,9 |
| 8 |
36 |
3,404 |
3,607 |
3,5 |
| 10 |
32 |
3,962 |
4,166 |
4 |
| 12 |
28 |
4,496 |
4,724 |
4,6 |
| 1/4 |
28 |
5,359 |
5,588 |
5,4 |
| 5/16 |
24 |
6,782 |
7,036 |
6,9 |
| 3/8 |
24 |
8,382 |
8,636 |
8,4 |
| 7/16 |
20 |
9,728 |
10,033 |
|
| 1/2 |
20 |
11,328 |
11,608 |
11,5 |
| 9/16 |
18 |
12,751 |
13,081 |
13 |
| 5/8 |
18 |
14,351 |
14,681 |
14,5 |
| 3/4 |
16 |
17,323 |
17,678 |
17,4 |
| 7/8 |
14 |
20,269 |
20,676 |
20,4 |
| 1 |
12 |
23,114 |
23,571 |
23,25 |
|
|
ANSI B1.1 |
Threads 1" |
Mini |
Maxi |
Drill |
| |
UNEF Thread 2B |
|
| 12 |
32 |
4,623 |
4,826 |
4,7 |
| 1/4 |
32 |
5,486 |
5,690 |
5,6 |
| 5/16 |
32 |
7,087 |
7,264 |
7,2 |
| 3/8 |
32 |
8,661 |
8,865 |
8,8 |
| 7/16 |
28 |
10,135 |
10,338 |
10,2 |
| 1/2 |
28 |
11,709 |
11,938 |
11,8 |
| 9/16 |
24 |
13,132 |
13,386 |
13,2 |
| 5/8 |
24 |
14,732 |
14,986 |
14,75 |
| 3/4 |
20 |
17,678 |
17,958 |
17,75 |
| 7/8 |
20 |
20,853 |
21,133 |
21 |
| 1 |
20 |
24,028 |
24,308 |
24,25 |
|
|
| BS 84 1956 |
Threads 1" |
Mini |
Maxi |
Drill |
| |
BSF Thread |
|
| 3/16 |
32 |
3,746 |
4,005 |
3,9 |
| 7/32 |
28 |
4,394 |
4,676 |
4,5 |
| 1/4 |
26 |
5,100 |
5,397 |
5,3 |
| 9/32 |
26 |
5,892 |
6,189 |
6,1 |
| 5/16 |
22 |
6,459 |
6,817 |
6,7 |
| 3/8 |
20 |
7,899 |
8,331 |
8,2 |
| 7/16 |
18 |
9,304 |
9,763 |
9,6 |
| 1/2 |
16 |
10,668 |
11,163 |
11 |
| 9/16 |
16 |
12,255 |
12,750 |
12,5 |
| 5/8 |
14 |
13,553 |
14,094 |
14 |
| 11/16 |
14 |
15,140 |
15,681 |
15,5 |
| 3/4 |
12 |
16,337 |
16,939 |
16,75 |
| 7/8 |
11 |
19,268 |
19,908 |
19,75 |
| 1 |
10 |
22,148 |
22,834 |
22,75 |
|
|
| BS 93 1951 |
Threads 1" |
Mini |
Maxi |
Drill |
| |
BA Thread |
|
| 12 |
0,28 |
0,960 |
1,065 |
1 |
| 11 |
0,31 |
1,130 |
1,245 |
1,2 |
| 10 |
0,35 |
1,280 |
1,410 |
1,35 |
| 9 |
0,39 |
1,430 |
1,575 |
1,5 |
| 8 |
0,43 |
1,680 |
1,840 |
1,8 |
| 7 |
0,48 |
1,920 |
2,100 |
2 |
| 6 |
0,53 |
2,160 |
2,360 |
2,3 |
| 5 |
0,59 |
2,490 |
2,710 |
2,6 |
| 4 |
0,66 |
2,810 |
3,060 |
2,95 |
| 3 |
0,73 |
3,220 |
3,495 |
3,4 |
| 2 |
0,81 |
3,730 |
4,035 |
3,9 |
| 1 |
0,9 |
4,220 |
4,560 |
4,4 |
| 0 |
1 |
4,800 |
5,175 |
5 |
|
|
|