Drill Sizes: Number, Letter and Fractions

Number & Letter Drills

Fractional Drills

Decimal Equivalents

Number & Letter Drills

Fractional Drills

Decimal Equivalents

80

--

.0135

 

--
13/64
.2031

79

--

.0145

 

6
--
.2040
--
1/64
.0156

 

5
--
.2055
78
--
.0160

 

4
--
.2090
77
--
.0180

 

3
--
.2130
76
--
.0200

 

--
7/32
.2187
75
--
.0210

 

2
--
.2210
74
--
.0225

 

1
--
.2280
73
--
.0240

 

A
--
.2340
72
--
.0250

 

--
15/64
.2344
71
--
.0260

 

B
--
.2380
70
--
.0280

 

C
--
.2420
69
--
.0292

 

D
--
.2460
68
--
.0310

 

E
1/4
.2500
--
1/32
.0312

 

F
--
.2570
67
--
.0320

 

G
--
.2610
66
--
.0330

 

--
17/64
.2656
65
--
.0350

 

H
--
.2660
64
--
.0360

 

I
--
.2720
63
--
.0370

 

J
--
.2770
62
--
.0380

 

K
--
.2810
61
--
.0390

 

--
9/32
.2812
60
--
.0400

 

L
--
.2900
59
--
.0410

 

M
--
.2950
58
--
.0420

 

--
19/64
.2969
57
--
.0430

 

N
--
.3020
56
--
.0465

 

--
5/16
.3125
--
3/64
.0469

 

O
--
.3160
55
--
.0520

 

P
--
.3230
54
--
.0550

 

--
21/64
.3281
53
--
.0595

 

Q
--
.3320
--
1/16
.0625

 

R
--
.3390
52
--
.0635

 

--
11/32
.3437
51
--
.0670

 

T
--
.3580
50
--
.0700

 

--
23/64
.3594
49
--
.0730

 

U
--
.3680
48
--
.0760

 

--
3/8
.3750
--
5/64
.0781

 

V
--
.3770
47
--
.0785

 

W
--
.3860
46
--
.0810

 

--
25/64
.3906
45
--
.0820

 

X
--
.3970
44
--
.0860

 

Y
--
.4040
43
--
.0890

 

--
13/32
.4062
42
--
.0935

 

Z
--
.4130
--
3/32
.0937

 

27/64
.4219
41
--
.0960

 

7/16
.4375
40
--
.0980

 

29/64
.4531
39
--
.0995

 

15/32
.4687
38
--
.1015

 

31/64
.4844
37
--
.1040

 

1/2
.5000
36
--
.1065

 

33/64
.5156
--
7/64
.1094

 

17/32
.5312
35
--
.1100

 

35/64
.5469
34
--
.1110

 

9/16
.5625
33
--
.1130

 

37/64
.5781
32
--
.1160

 

19/32
.5937
31
--
.1200

 

39/64
.6094
--
1/8
.1250

 

5/8
.6250
30
--
.1285

 

41/64
.6406
29
--
.1360

 

21/32
.6562
28
--
.1405

 

43/64
.6719
--
9/64
.1406

 

11/16
.6875
27
--
.1440

 

45/64
.7031
26
--
.1470

 

23/32
.7187
25
--
.1495

 

47/64
.7344
24
--
.1520

 

3/4
.7500
23
--
.1540

 

49/64
.7656
--
5/32
.1562

 

25/32
.7812
22
--
.1570

 

51/64
.7969
21
--
.1590

 

13/16
.8125
20
--
.1610

 

53/64
.8281
19
--
.1660

 

27/32
.8437
18
--
.1695

 

55/64
.8594
--
11/64
.1719

 

7/8
.8750
17
--
.1720

 

57/64

.8906

16
--
.1770

 

29/32
.9062
15
--
.1800

 

59/64
.9219
14
--
.1820

 

15/16
.9375
13
--
.1850

 

61/64
.9531
--
3/16
.1875

 

31/32
.9687
12
--
.1890

 

63/64
.9844
11
--
.1910

 

1
1.00
10
--
.1935

 

9
--
.1960

 

8
--
.1990

 

7
--
.2010

 

Back to the Reference List

 


All NewMetalworker.com drawn,written, photographic and video materials are property of and copyright by NewMetalworker.com and NewWoodworker.com LLC 2001-2016. Materials may not be used in any way without prior written permission from the owner.

Privacy Statement