Drill and Tap Sizes Chart

English and Metric Provided

English

Drill SizeDecimalTap Size
800.0135
790.0145
1/640.0156
780.0160
770.0180
760.0200
750.0210
740.0225
730.0240
720.0250
710.0260
700.0280
690.0292
680.0310
1/320.0312
670.0320
660.0330
650.0350
640.0360
630.0370
620.0380
610.0390
600.0400
590.0410
580.0420
570.0430
560.0465
3/640.04690-80
550.0520
540.0550
530.05951-64, 72
1/160.0625
520.0635
510.0670
500.07002-56, 64
790.0730
780.0760
5/640.0781
470.07853-48
460.0810
450.08203-56
440.0860
430.08904-40
420.09354-48
3/320.0938
410.0960
400.0980
390.0995
380.10155-40
370.10405-44
360.10656-32
7/640.1094
350.1100
340.1110
330.11306-40
320.1160
310.1200
1/80.1250
300.1285
290.13608-32, 36
280.1405
9/640.1046
270.1440
260.1470
250.1495
240.1520
230.1540
5/320.1562
220.1570
210.1590
200.1610
190.1660
180.1695
11/640.1719
170.1730
160.1770
150.1800
140.1820
130.1850
3/160.1875
120.1890
110.1910
100.1935
90.1960
80.1990
70.20101/4-20
13/640.2031
60.2040
50.2055
40.2090
30.21301/4-28
7/320.2188
20.2210
10.2280
A0.2340
15/640.2344
B0.2380
C0.2420
D0.2460
E, 1/40.2500
F0.25705/16-18
G0.2610
17/640.2656
H0.2660
I0.27205/16-24
J0.2770
K0.2810
9/320.2812
L0.2900
M0.2950
19/640.2969
N0.3020
5/160.31253/8-16
O0.3160
P0.3230
21/640.3281
Q0.33203/8-24
R0.3390
11/320.3438
S0.3480
T0.3580
23/640.3594
U0.36807/16-14
3/80.3750
V0.3770
W0.3860
25/640.39067/16-20
X0.3970
Y0.4040
13/320.4062
Z0.4130
27/640.42191/2-13
7/160.4375
29/640.45311/2-20
15/320.4688
31/640.48449/16-12
1/20.5000
33/640.51569/16-18
17/320.53125/8-11
35/640.5469
9/160.5625
37/640.57815/8-18
19/320.5938
39/640.6094
5/80.6250
41/640.6406
21/320.65623/4-10
43/640.6719
11/160.68753/4-16
45/640.7031
23/320.7188
47/640.7344
3/40.7500
49/640.76567/8-9
25/320.7812
51/640.7969
13/160.81257/8-14
53/640.8281
27/320.8438
55/640.8594
7/80.87501-8
57/640.8906
29/320.9062
59/640.92191-12
15/160.93751-14
61/640.9531
31/320.9688
63/640.98441 1/8-7
11.0000
1 3/641.04691 1/8-12
1 7/641.10941 1/4-7
1 1/81.1250
1 11/641.17191 1/4-12
1 7/321.21881 3/8-6
1 1/41.2500
1 19/641.29691 3/8-12
1 11/321.34381 1/2-6
1 3/81.3750
1 27/641.42191 1/2-12
1 1/21.5000

Metric Taps

Metric TapTap Drill
(mm)
Decimal
(in)
M1.6 x 0.351.25.0492
M1.8 x 0.351.45.0571
M2 x 0.41.60.0630
M2.2 x 0.451.75.0689
M2.5 x 0.452.05.0807
M3 x 0.52.50.0984
M3.5 x 0.62.90.1142
M4 x 0.73.30.1299
M4.5 x 0.753.70.1457
M5 x 0.84.20.1654
M6 x 15.00.1968
M7 x 16.00.2362
M8 x 1.256.70.2638
M8 x 1.257.00.2756
M10 x 1.58.50.3346
M10 x 1.258.70.3425
M12 x 1.7510.20.4016
M12 x 1.2510.80.4252
M14 x 212.00.4724
M14 x 1.512.50.4921
M16 x 214.00.5512
M16 x 1.514.50.5709
M18 x 2.515.50.6102
M18 x 1.516.50.6496
M20 x 2.517.50.6890
M20 x 1.518.50.7283
M22 x 2.519.50.7677
M22 x 1.520.50.8071
M24 x 321.00.8268
M24 x 222.00.8661
M27 x 324.00.9449
M27 x 225.00.9843
M30 x 3.526.501.0433
M30 x 228.001.1024
M33 x 3.529.501.1614
M33 x 231.001.2205
M36 x 432.001.2568
M36 x 333.001.2992
M39 x 435.001.3780
M39 x 336.001.4173
  • Provided for convenience only.  Not responsible for errors.  Use at your risk.