Fillable Printable Metric Tap Drill Chart
Fillable Printable Metric Tap Drill Chart
Metric Tap Drill Chart
Tap Drill Clearance Drill
Metric Tap &
Clearance Drill
Sizes
75% Thread for
Aluminum, Brass,
& Plastics
50% Thread for
Steel, Stainless,
& Iron
Close Fit Standard Fit
Screw Size
(mm)
Thread
Pitch (mm)
Drill Size
(mm)
Closest
American
Drill
Drill Size
(mm)
Closest
American
Drill
Drill Size
(mm)
Closest
American
Drill
Drill Size
(mm)
Closest
American
Drill
M1.5 0.35 1.15 56 1.25 55 1.60 1/16 1.65 52
M1.6 0.35 1.25 55 1.35 54 1.70 51 1.75 50
M 1.8 0.35 1.45 53 1.55 1/16 1.90 49 2.00 5/64
0.45 1.55 1/16 1.70 51
M 2
0.40 1.60 52 1.75 50
2.10 45 2.20 44
M 2.2 0.45 1.75 50 1.90 48 2.30 3/32 2.40 41
M 2.5 0.45 2.05 46 2.20 44 2.65 37 2.75 7/64
0.60 2.40 41 2.60 37
M 3
0.50 2.50 39 2.70 36
3.15 1/8 3.30 30
M 3.5 0.60 2.90 32 3.10 31 3.70 27 3.85 24
0.75 3.25 30 3.50 28
M 4
0.70 3.30 30 3.50 28
4.20 19 4.40 17
M 4.5 0.75 3.75 25 4.00 22 4.75 13 5.00 9
1.00 4.00 21 4.40 11/64
0.90 4.10 20 4.40 17
M 5
0.80 4.20 19 4.50 16
5.25 5 5.50 7/32
M 5.5 0.90 4.60 14 4.90 10 5.80 1 6.10 B
1.00 5.00 8 5.40 4
M 6
0.75 5.25 4 5.50 7/32
6.30 E 6.60 G
1.00 6.00 B 6.40 E
M 7
0.75 6.25 D 6.50 F
7.40 L 7.70 N
1.25 6.80 H 7.20 J
M 8
1.00 7.00 J 7.40 L
8.40 Q 8.80 S
1.25 7.80 N 8.20 P
M 9
1.00 8.00 O 8.40 21/64
9.50 3/8 9.90 25/64
1.50 8.50 R 9.00 T
1.25 8.80 11/32 9.20 23/64
M 10
1.00 9.00 T 9.40 U
10.50 Z 11.00 7/16
M 11 1.50 9.50 3/8 10.00 X 11.60 29/64 12.10 15/32
1.75 10.30 13/32 10.90 27/64
1.50 10.50 Z 11.00 7/16
M 12
1.25 10.80 27/64 11.20 7/16
12.60 1/2 13.20 33/64
2.00 12.10 15/32 12.70 1/2
1.50 12.50 1/2 13.00 33/64
M 14
1.25 12.80 1/2 13.20 33/64
14.75 37/64 15.50 39/64
M 15 1.50 13.50 17/32 14.00 35/64 15.75 5/8 16.50 21/32
2.00 14.00 35/64 14.75 37/64
M 16
1.50 14.50 37/64 15.00 19/32
16.75 21/32 17.50 11/16
M 17 1.50 15.50 39/64 16.00 5/8 18.00 45/64 18.50 47/64
2.50 15.50 39/64 16.50 41/64
2.00 16.00 5/8 16.75 21/32
M 18
1.50 16.50 21/32 17.00 43/64
19.00 3/4 20.00 25/32
M 19 2.50 16.50 21/32 17.50 11/16 20.00 25/32 21.00 53/64
2.50 17.50 11/16 18.50 23/32
2.00 18.00 45/64 18.50 47/64
M 20
1.50 18.50 47/64 19.00 3/4
21.00 53/64 22.00 55/64
the premier source of parts and accessories for mini lathes and mini mills
the premier source of parts and accessories for mini lathes and mini mills
Tap & Clearance Drill Sizes
Tap Drill Clearance Drill
75% Thread for
Aluminum, Brass, &
Plastics
50% Thread for
Steel, Stainless,
& Iron
Close Fit Free Fit
Screw
Size
Major
Diameter
Threads
Per Inch
Minor
Diameter
Drill Size Dec. Eq. Drill Size Dec. Eq. Drill Size Dec. Eq. Drill Size Dec. Eq.
0 .0600 80 .0447 3/64 .0469 55 .0520 52 .0635 50 .0700
64 .0538 53 .0595 1/16 .0625
1 .0730
72 .0560 53 .0595 52 .0635
48 .0760 46 .0810
56 .0641 50 .0700 49 .0730
2 .0860
64 .0668 50 .0700 48 .0760
43 .0890 41 .0960
48 .0734 47 .0785 44 .0860
3 .0990
56 .0771 45 .0820 43 .0890
37 .1040 35 .1100
40 .0813 43 .0890 41 .0960
4 .1120
48 .0864 42 .0935 40 .0980
32 .1160 30 .1285
40 .0943 38 .1015 7/64 .1094
5 .125
44 .0971 37 .1040 35 .1100
30 .1285 29 .1360
32 .0997 36 .1065 32 .1160
6 .138
40 .1073 33 .1130 31 .1200
27 .1440 25 .1495
32 .1257 29 .1360 27 .1440
8 .1640
36 .1299 29 .1360 26 .1470
18 .1695 16 .1770
24 .1389 25 .1495 20 .1610
10 .1900
32 .1517 21 .1590 18 .1695
9 .1960 7 .2010
24 .1649 16 .1770 12 .1890
28 .1722 14 .1820 10 .1935
12 .2160
32 .1777 13 .1850 9 .1960
2 .2210 1 .2280
20 .1887 7 .2010 7/32 .2188
28 .2062 3 .2130 1 .2280
1/4 .2500
32 .2117 7/32 .2188 1 .2280
F .2570 H .2660
18 .2443 F .2570 J .2770
24 .2614 I .2720 9/32 .2812 5/16 .3125
32 .2742 9/32 .2812 L .2900
P .3230 Q .3320
16 .2983 5/16 .3125 Q .3320
24 .3239 Q .3320 S .3480
3/8 .3750
32 .3367 11/32 .3438 T .3580
W .3860 X .3970
14 .3499 U .3680 25/64 .3906
20 .3762 25/64 .3906 13/32 .4062
7/16 .4375
28 .3937 Y .4040 Z .4130
29/64 .4531 15/32 .4687
13 .4056 27/64 .4219 29/64 .4531
20 .4387 29/64 .4531 15/32 .4688
1/2 .5000
28 .4562 15/32 .4688 15/32 .4688
33/64 .5156 17/32 .5312
12 .4603 31/64 .4844 33/64 .5156
18 .4943 33/64 .5156 17/32 .5312 9/16 .5625
24 .5114 33/64 .5156 17/32 .5312
37/64 .5781 19/32 .5938
11 .5135 17/32 .5312 9/16 .5625
18 .5568 37/64 .5781 19/32 .5938
5/8 .6250
24 .5739 37/64 .5781 19/32 .5938
41/64 .6406 21/32 .6562
11/16 .6875 24 .6364 41/64 .6406 21/32 .6562 45/64 .7031 23/32 .6562
10 .6273 21/32 .6562 11/16 .6875
16 .6733 11/16 .6875 45/64 .7031 3/4 .7500
20 .6887 45/64 .7031 23/32 .7188
49/64 .7656 25/32 .7812
13/16 .8125 20 .7512 49/64 .7656 25/32 .7812 53/64 .8281 27/32 .8438
9 .7387 49/64 .7656 51/64 .7969
14 .7874 13/16 .8125 53/64 .8281
7/8 .8750
20 .8137 53/64 .8281 27/32 .8438
57/64 .8906 29/32 .9062
15/16 .9375 20 .8762 57/64 .8906 29/32 .9062 61/64 .9531 31/32 .9688
8 .8466 7/8 .8750 59/64 .9219
12 .8978 15/16 .9375 61/64 .9531
1 1.000
20 .9387 61/64 .9531 31/32 .9688
1-1/64 1.0156 1-1/32 1.0313
