DRILL SIZE DECIMAL EQUIVALENT & TAP DRILL CHART
嚜澳RILL SIZE DECIMAL EQUIVALENT & TAP DRILL CHART
DECIMAL EQUIVALENT CHART
DRILL
SIZE
MM
每
每
每
每
80
79
1/64
78
77
每
76
75
74
每
73
72
71
每
70
69
每
68
1/32
每
67
66
65
每
64
63
62
61
每
60
59
58
57
56
3/64
55
54
0.10
0.20
0.25
0.30
0.34
0.37
0.40
0.41
0.46
0.50
0.51
0.53
0.57
0.60
0.61
0.64
0.66
0.70
0.71
0.74
0.75
0.79
0.79
0.80
0.81
0.84
0.89
0.90
0.91
0.94
0.97
0.99
1.00
1.02
1.04
1.07
1.09
1.18
1.19
1.32
1.40
EQUIVALENT
DRILL
SIZE
MM
EQUIVALENT
.0039
.0079
.0098
.0118
.0135
.0145
.0156
.0160
.0180
.0197
.0200
.0210
.0225
.0236
.0240
.0250
.0260
.0276
.0280
.0292
.0295
.0310
.0313
.0315
.0320
.0330
.0350
.0354
.0360
.0370
.0380
.0390
.0394
.0400
.0410
.0420
.0430
.0465
.0469
.0520
.0550
53
1/16
52
51
50
49
48
5/64
47
每
46
45
44
43
42
3/32
41
40
39
38
37
36
7/64
35
34
33
32
每
31
1/8
30
29
28
9/64
27
26
25
24
23
5/32
22
1.51
1.59
1.61
1.70
1.78
1.85
1.93
1.98
1.99
2.00
2.06
2.08
2.18
2.26
2.37
2.38
2.44
2.50
2.53
2.58
2.64
2.71
2.78
2.79
2.82
2.87
2.95
3.00
3.05
3.18
3.26
3.45
3.57
3.57
3.66
3.73
3.80
3.86
3.91
3.97
3.99
.0595
.0625
.0635
.0670
.0700
.0730
.0760
.0781
.0785
.0787
.0810
.0820
.0860
.0890
.0935
.0938
.0960
.0980
.0995
.1015
.1040
.1065
.1094
.1100
.1110
.1130
.1160
.1181
.1200
.1250
.1285
.1360
.1405
.1406
.1440
.1470
.1495
.1520
.1540
.1562
.1570
DECIMAL
DECIMAL
DRILL
SIZE
每
21
20
19
18
11/64
17
16
15
14
13
3/16
12
11
10
9
每
8
7
13/64
6
5
4
3
7/32
2
1
A
15/64
每
B
C
D
1/4
E
F
G
17/64
H
I
每
MM
DECIMAL
EQUIVALENT
4.00
4.04
4.09
4.22
4.31
4.37
4.39
4.50
4.57
4.62
4.70
4.76
4.80
4.85
4.91
4.98
5.00
5.05
5.11
5.16
5.18
5.22
5.31
5.41
5.56
5.61
5.79
5.94
5.95
6.00
6.05
6.15
6.25
6.35
6.35
6.53
6.63
6.75
6.76
6.91
7.00
.1575
.1590
.1610
.1660
.1695
.1719
.1730
.1770
.1800
.1820
.1850
.1875
.1890
.1910
.1935
.1960
.1968
.1990
.2010
.2031
.2040
.2055
.2090
.2130
.2188
.2210
.2280
.2340
.2344
.2362
.2380
.2420
.2460
.2500
.2500
.2570
.2610
.2656
.2660
.2720
.2756
DRILL
SIZE
J
K
9/32
L
M
19/64
N
5/16
每
O
P
21/64
Q
R
11/32
S
每
T
23/64
U
3/8
V
W
25/64
每
X
Y
13/32
Z
27/64
每
7/16
29/64
15/32
每
31/64
1/2
33/64
17/32
35/64
MM
7.04
7.14
7.14
7.37
7.49
7.54
7.67
7.94
8.00
8.03
8.20
8.33
8.43
8.61
8.73
8.84
9.00
9.09
9.13
9.35
9.53
9.56
9.80
9.92
10.00
10.08
10.26
10.32
10.49
10.72
11.00
11.11
11.51
11.91
12.00
12.30
12.70
13.00
13.10
13.49
13.89
DECIMAL
EQUIVALENT
.2770
.2810
.2812
.2900
.2950
.2969
.3020
.3125
.3150
.3160
.3230
.3281
.3320
.3390
.3438
.3480
.3543
.3580
.3594
.3680
.3750
.3770
.3860
.3906
.3937
.3970
.4040
.4062
.4130
.4219
.4331
.4375
.4531
.4688
.4724
.4844
.5000
.5118
.5156
.5312
.5469
DRILL
SIZE
每
9/16
37/64
每
19/32
39/64
5/8
每
41/64
21/32
每
43/64
11/16
45/64
每
23/32
47/64
每
3/4
49/64
25/32
每
51/64
13/16
每
53/64
27/32
55/64
每
7/8
57/64
每
29/32
59/64
15/16
每
61/64
31/32
每
63/64
1"
MM
14.00
14.29
14.68
15.00
15.08
15.48
15.88
16.00
16.27
16.67
17.00
17.07
17.46
17.86
18.00
18.26
18.65
19.00
19.05
19.45
19.84
20.00
20.24
20.64
21.00
21.03
21.43
21.84
22.00
22.23
22.62
23.00
23.02
23.42
23.81
24.00
24.21
24.61
25.00
25.00
25.40
DECIMAL
EQUIVALENT
.5512
.5625
.5781
.5906
.5938
.6094
.6250
.6299
.6406
.6562
.6693
.6719
.6875
.7031
.7087
.7188
.7344
.7480
.7500
.7656
.7812
.7874
.7969
.8125
.8268
.8281
.8438
.8594
.8661
.8750
.8906
.9055
.9062
.9219
.9375
.9449
.9531
.9688
.9842
.9844
1.0000
TAP DRILL CHART
Imperial has made a concerted effort
to provide accurate information in its
catalog and on its website, however
Imperial assumes no responsibility for
the accuracy of the information. All
information published by Imperial in
its catalogs, marketing literature, and
on its website is provided ※as is§
without warranty, expressed or
implied. Imperial and its vendors
disclaim all warranties, expressed or
implied including, without limitation,
warranties of merchantability and
fitness for a particular purpose.
TAP
SIZE
0 每 80
M1.6 x .35
1 每 64
M2 x .4
1 每 72
2 每 56
2 每 64
M2.5 x .45
3 每 48
3 每 56
4 每 40
4 每 48
M3 x .5
5 每 40
5 每 44
M3.5 x .6
6 每 32
6 每 40
M4 x .7
8 每 32
8 每 36
10 每 24
DRILL
SIZE
3/64
1.25 mm
53
1/16
53
51
50
2.05 mm
5/64
46
44
42
40
39
38
33
36
33
3.25 mm
29
29
25
PROBABLE
% THREAD
71 每 81
67 每 77
59 每 67
72 每 79
67 每 75
62 每 69
70 每 79
69 每 77
70 每 77
69 每 78
65 每 71
61 每 68
70 每 79
65 每 72
63 每 71
72 每 81
71 每 78
69 每 77
74 每 82
62 每 69
70 每 78
69 每 75
PHONE: 1-800-558-2808
TAP
SIZE
10 每 32
M5 x .8
12 每 24
12 每 28
M6 x 1
1/4 每 20
1/4 每 28
5/16 每 18
5/16 每 24
M8 x 1.25
3/8 每 16
3/8 每 24
M10 x 1.5
7/16 每 14
7/16 每 20
M12 x 1.75
1/2 每 13
1/2 每 20
M14 x 2
9/16 每 12
9/16 每 18
5/8 每 11
DRILL
SIZE
21
4.2 mm
17
15
10
7
3
F
I
6.7 mm
5/16
Q
8.4 mm
U
25/64
13/32
27/64
29/64
15/32
31/64
33/64
17/32
PROBABLE
% THREAD
68 每 76
69 每 77
66 每 72
70 每 78
76 每 84
70 每 75
72 每 80
72 每 77
67 每 75
74 每 80
72 每 77
71 每 79
76 每 82
70 每 75
65 每 72
69 每 74
73 每 78
65 每 72
76 每 81
68 每 72
58 每 65
75 每 79
FAX: 1-800-553-8769
TAP
SIZE
5/8 每 18
M16 x 2
3/4 每 10
3/4 每 16
M20 x 2.5
7/8 每 9
7/8 每 14
M24 x 3
1每8
1 每 12
1 每 14
1-1/8 每 7
1/18 每 12
M30 x 3.5
1-1/4 每 7
1-1/4 每 12
1-3/8 每 6
1-3/8 每 12
M36 x 4
1-1/2 每 6
1-1/2 每 12
DRILL
SIZE
37/64
35/64
21/32
11/16
11/16
49/64
13/16
53/64
7/8
59/64
15/16
63/64
1-3/64
1-3/64
1-7/64
1-11/64
1-7/32
1-19/64
1-1/4
1-11/32
1-27/64
PROBABLE
% THREAD
58 每 65
76 每 81
68 每 72
71 每 77
74 每 78
72 每 76
62 每 67
72 每 76
73 每 77
67 每 72
61 每 67
72 每 76
66 每 72
75
76
72
72
72
82
72
72
WEB:
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