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| Tap Drill Chart |
|
TAP
|
TAP DRILL
|
Decimal Drill Size
|
Theo. % Of Thread
|
Probable Oversize
|
Probable Hole Size
|
% Of THREAD
|
|
0-80
|
56
|
.0465
|
83
|
.0015
|
.0480
|
74
|
| |
3/64
|
.0469
|
81
|
.0015
|
.0480
|
71
|
|
1-64
|
54
|
.0550
|
89
|
.0015
|
.0565
|
81
|
| |
53
|
.0595
|
67
|
.0015
|
.0610
|
59
|
|
1-72
|
53
|
.0595
|
75
|
.0015
|
.0610
|
67
|
| |
1/16
|
.0625
|
58
|
.0015
|
.0640
|
50
|
|
2-56
|
51
|
.0670
|
82
|
.0017
|
.0687
|
74
|
| |
50
|
.0700
|
69
|
.0017
|
.0717
|
62
|
| |
49
|
.0730
|
56
|
.0017
|
.0747
|
49
|
|
2-64
|
50
|
.0700
|
79
|
.0017
|
.0717
|
70
|
| |
49
|
.0730
|
64
|
.0017
|
.0747
|
56
|
|
3-48
|
48
|
.0760
|
85
|
.0019
|
.0779
|
78
|
| |
5/64
|
.0781
|
77
|
.0019
|
.0800
|
70
|
| |
47
|
.0785
|
76
|
.0019
|
.0804
|
69
|
| |
46
|
.0810
|
67
|
.0019
|
.0829
|
60
|
| |
45
|
.0820
|
63
|
.0019
|
.0839
|
56
|
|
3-56
|
46
|
.0810
|
78
|
.0019
|
.0829
|
69
|
| |
45
|
.0820
|
73
|
.0019
|
.0839
|
65
|
| |
44
|
.0860
|
56
|
.0020
|
.0880
|
47
|
|
4-40
|
44
|
.0860
|
80
|
.0020
|
.0880
|
74
|
 |
|
TAP
|
TAP DRILL
|
Decimal Drill Size
|
Theo. % Of Thread
|
Probable Oversize
|
Probable Hole Size
|
% Of THREAD
|
| |
43
|
.0890
|
71
|
.0020
|
.0910
|
65
|
| |
42
|
.0935
|
57
|
.0020
|
.0955
|
51
|
| |
3/32
|
.0938
|
56
|
.0020
|
.0958
|
50
|
|
4-48
|
42
|
.0935
|
68
|
.0020
|
.0955
|
61
|
| |
3/32
|
.0938
|
68
|
.0020
|
.0958
|
60
|
| |
41
|
.0960
|
59
|
.0020
|
.0980
|
52
|
|
5-40
|
40
|
.0980
|
83
|
.0023
|
.1003
|
76
|
| |
39
|
.0995
|
79
|
.0023
|
.1018
|
71
|
| |
38
|
.1015
|
72
|
.0023
|
.1038
|
65
|
| |
37
|
.1040
|
65
|
.0023
|
.1063
|
58
|
|
5-44
|
38
|
.1015
|
79
|
.0023
|
.1038
|
72
|
| |
37
|
.1040
|
71
|
.0023
|
.1063
|
63
|
| |
36
|
.1065
|
63
|
.0023
|
.1088
|
55
|
|
6-32
|
37
|
.1040
|
84
|
.0023
|
.1063
|
78
|
| |
36
|
.1065
|
78
|
.0023
|
.1088
|
72
|
| |
7-64
|
.1094
|
70
|
.0026
|
.1120
|
64
|
| |
35
|
.1100
|
69
|
.0026
|
.1126
|
63
|
| |
34
|
.1110
|
67
|
.0026
|
.1136
|
60
|
| |
33
|
.1130
|
62
|
.0026
|
.1156
|
55
|
|
6-40
|
34
|
.1110
|
83
|
.0026
|
.1136
|
75
|
|
|
TAP
|
TAP DRILL
|
Decimal Drill Size
|
Theo. % Of Thread
|
Probable Oversize
|
Probable Hole Size
|
% Of THREAD
|
| |
33
|
.1130
|
77
|
.0026
|
.1156
|
69
|
| |
32
|
.1160
|
68
|
.0026
|
.1186
|
60
|
|
8-32
|
29
|
.1360
|
69
|
.0029
|
.1389
|
62
|
| |
28
|
.1405
|
58
|
.0029
|
.1434
|
51
|
|
8-36
|
29
|
.1360
|
78
|
.0029
|
.1389
|
70
|
| |
28
|
.1405
|
68
|
.0029
|
.1434
|
57
|
| |
9-64
|
.1406
|
68
|
.0029
|
.1435
|
57
|
|
10-24
|
27
|
.1440
|
85
|
.0032
|
.1472
|
79
|
| |
26
|
.1470
|
79
|
.0032
|
.1502
|
74
|
| |
25
|
.1495
|
75
|
.0032
|
.1527
|
69
|
| |
24
|
.1520
|
70
|
.0032
|
.1552
|
64
|
| |
23
|
.1540
|
67
|
.0032
|
.1572
|
61
|
|
10-32
|
5/32
|
.1563
|
83
|
.0032
|
.1595
|
75
|
| |
22
|
.1570
|
81
|
.0032
|
.1602
|
73
|
| |
21
|
.1590
|
76
|
.0032
|
.1622
|
68
|
| |
20
|
.1610
|
71
|
.0032
|
.1642
|
64
|
| |
19
|
.1660
|
59
|
.0032
|
.1692
|
51
|
|
12-24
|
11/64
|
.1719
|
82
|
.0035
|
.1754
|
75
|
| |
17
|
.1730
|
79
|
.0035
|
.1765
|
73
|
| |
16
|
.1770
|
72
|
.0035
|
.1805
|
66
|
|
|
TAP
|
TAP DRILL
|
Decimal Drill Size
|
Theo. % Of Thread
|
Probable Oversize
|
Probable Hole Size
|
% Of THREAD
|
| |
15
|
.1800
|
67
|
.0035
|
.1835
|
60
|
| |
14
|
.1820
|
63
|
.0035
|
.1855
|
56
|
|
12-28
|
16
|
.1770
|
84
|
.0035
|
.1805
|
77
|
| |
15
|
.1800
|
78
|
.0035
|
.1835
|
70
|
| |
14
|
.1820
|
73
|
.0035
|
.1855
|
66
|
| |
13
|
.1850
|
67
|
.0035
|
.1885
|
59
|
| |
3/16
|
.1875
|
61
|
.0035
|
.1910
|
54
|
|
1/4-20
|
9
|
.1960
|
83
|
.0038
|
.1998
|
77
|
| |
8
|
.1990
|
79
|
.0038
|
.2028
|
73
|
| |
7
|
.2010
|
75
|
.0038
|
.2048
|
70
|
| |
13/64
|
.2013
|
72
|
.0038
|
.2069
|
66
|
| |
6
|
.2040
|
71
|
.0038
|
.2078
|
65
|
| |
5
|
.2055
|
69
|
.0038
|
.2093
|
63
|
| |
4
|
.2090
|
63
|
.0038
|
.2128
|
57
|
|
1/4-28
|
3
|
.2130
|
80
|
.0038
|
.2168
|
72
|
| |
7/32
|
.2188
|
67
|
.0038
|
.2226
|
59
|
| |
2
|
.2210
|
63
|
.0038
|
.2248
|
55
|
|
5/16-18
|
F
|
.2570
|
77
|
.0038
|
.2608
|
72
|
| |
G
|
.2610
|
71
|
.0041
|
.2651
|
66
|
| |
17/64
|
.2656
|
65
|
.0041
|
.2697
|
59
|
|
|
TAP
|
TAP DRILL
|
Decimal Drill Size
|
Theo. % Of Thread
|
Probable Oversize
|
Probable Hole Size
|
% Of THREAD
|
| |
H
|
.2660
|
64
|
.0041
|
.2701
|
59
|
|
5/16-24
|
H
|
.2660
|
86
|
.0041
|
.2701
|
78
|
| |
I
|
.2720
|
75
|
.0041
|
.2761
|
67
|
| |
J
|
.2770
|
66
|
.0041
|
.2811
|
58
|
|
3/8-16
|
5/16
|
.3125
|
77
|
.0044
|
.3169
|
72
|
| |
O
|
.3160
|
73
|
.0044
|
.3204
|
68
|
| |
P
|
.323
|
64
|
.0044
|
.3274
|
59
|
|
3/8-24
|
21/64
|
.3281
|
87
|
.0044
|
.3325
|
79
|
| |
Q
|
.3320
|
79
|
.0044
|
.3364
|
71
|
| |
R
|
.3390
|
67
|
.0044
|
.3434
|
58
|
|
7/16-14
|
T
|
.3580
|
86
|
.0046
|
.3626
|
81
|
| |
23/64
|
.3594
|
84
|
.0046
|
.3640
|
79
|
| |
U
|
.3680
|
75
|
.0046
|
.3726
|
70
|
| |
3/8
|
.3750
|
67
|
.0046
|
.3796
|
62
|
| |
V
|
.3770
|
65
|
.0046
|
.3816
|
60
|
|
7/16-20
|
W
|
.3860
|
79
|
.0046
|
.3906
|
72
|
| |
25/64
|
.3906
|
72
|
.0046
|
.3952
|
65
|
| |
X
|
.3970
|
62
|
.0046
|
.4016
|
55
|
|
1/2-13
|
27/64
|
.4219
|
78
|
.0047
|
.4266
|
73
|
| |
7/16
|
.4375
|
63
|
.0047
|
.4422
|
58
|
|
|
TAP
|
TAP DRILL
|
Decimal Drill Size
|
Theo. % Of Thread
|
Probable Oversize
|
Probable Hole Size
|
% Of THREAD
|
