2300-2500 [5000]
Drill Decimal Equivalents
Fraction, Number, Letter, Metric Drill Sizes
Drill SizeDecimal
Equivalent
inch
Drill size
for Screw Tap
Torque in/lb
(Tension Load MS20365 and AN310 - 40,000 psi in bolts)
[Max Allowable Torque 90,000 psi in bolts]
Torque in/lb
(Shear Load MS20364 and AN320 - 24,000 psi in bolts)
[Max Allowable Torque 54,000 psi in bolts]
107.0019 
106.0023 
105.0027 
104.0031 
103.0035 
102.0039 
101.0043 
100.0047 
99.0051 
98.0055 
97 .0059 
96 .0063 
95 .0067 
94 .0071 
93.0075 
92.0079 
.2mm.0079 
91.0083 
90.0087 
.22mm.0087 
89.0091 
88.0095 
.25mm.0098 
87.0100 
86.0105 
85.110
.28mm.0110 
84.0115 
.3mm.0118 
83.0120 
82.0125 
.32mm.0126 
81.0130 
80.0135 
.35mm.0138 
79.0145 
1/64.0156 
.4mm.0157 
78.0160 
.45mm.0177 
77.0180 
.5mm.0197 
76.0200 
75.0210 
.55mm.0217 
74.0225 
.6mm.0236 
73.0240 
72.0250 
.65mm.0256 
71.0260 
.7mm.0276 
70.0280 
69.0292 
.75mm.0295 
68.0310 
1/32.0312 
.8mm.0315 
67.0320 
66.0330 
.85mm.0335 
65.0350 
.9mm.0354 
64.0360 
63.0370 
.95mm.0374 
62.0380 
61.0390 
1mm.0394 
60.0400 
59.0410 
1.05mm.0413 
58.0420 
57.0430 
1.1mm.0433 
1.15mm.0453 
56.04650-80
3/64.0469 
1.2mm.0472 
1.25mm.0492M1.6 x .35
1.3mm.0512 
55.0520 
1.35mm.0531 
54.05501-64
1.4mm.0551 
1.45mm.0571M1.8 x .35
1.5mm.0591 
53.05951-72
1.55mm.0610 
1/16.0625 
1.6mm.0630M2 x 4
52.0635 
1.65mm.0650 
1.7mm.0669 
51.06702-56
1.75mm.0689 
50.07002-64
1.8mm.0709 
1.85mm.0728 
49.073
1.9mm.0748 
48.07603-48
1.95mm.0768 
5/64.0781 
47.0785 
2mm.0787M2.5 x .45
2.05mm.0807 
46.08103-56
45.0820 
2.1mm.0827 
2.15mm.0846 
44.08604-40
2.2mm.0866 
2.25mm.0886 
43.0890 
2.3mm.0906 
2.35mm.0925 
42.09354-48
3/32.0938 
2.4mm.0945 
41.0960 
2.45mm.0965 
40.09805-40
2.5mm.0984M3 x .5
39.0995 
38.1015 
2.6mm.1024 
37.10406-32
2.7mm.1063 
36.1065 
2.75mm.1083 
7/64.1094 
35.1100 
2.8mm.1102 
34.11106-40
33.113
2.9mm.1142M3.5 x .6
32.1160 
3mm.1181 
31.1200 
3.1mm.1220 
1/8.1250 
3.2mm.1260 
3.25mm.1260 
30.1285 
3.3mm.1299M4 x 7
3.4mm.1339 
29.13608-32 8-3612-15 [20]7-9 [12]
3.5mm.1378 
28.1405 
9/64.1406 
3.6mm.1417 
27.144010-2420-25 [35]12-15 [21]
3.7mm.1457 
26.1470 
3.75mm.1476 
25.1495 
3.8mm.1496 
24.1520 
3.9mm.1535 
23.1540 
5/32.156210-3220-25 [40]12-15 [25]
22.1570 
4mm.1575 
21.1590 
20.1610 
4.1mm.1614 
4.2mm.1654M5 x 8
19.1660 
4.25mm.1673 
4.3mm.1693 
18.1695 
11/64.171912-24
17.1730 
4.4mm.1732 
16.177012-28
4.5mm.1772 
15.1800 
4.6mm.1811 
14.1820 
13.1850 
4.7mm.1850 
4.75mm.1870 
3/16.1875 
4.8mm.1890 
12.1890 
11.1910 
4.9mm.1929 
10.1935 
9.19601/4-2040-50 [75]25-30 [45]
5mm.1969M6 x 1
8.1990 
5.1mm.2008 
7.2010 
13/64.2031 
6.2040 
5.2mm.2047 
5.2055 
5.25mm.2067 
5.3mm.2087 
4.2090 
5.4mm.2126 
3.21301/4-2850-70 [100]30-40[60]
5.5mm.2165 
7/32.2188 
5.6mm.2205 
2.2211 
5.7mm.2244 
5.75mm.2264 
1.2280 
5.8mm.2283 
5.9mm.2323 
A.2340 
15/64.2344 
6mm.2362M7 x 1
B.2380 
6.1mm.2402 
C.2420 
6.2mm.2441 
D.2460 
6.25mm.2461 
6.3mm.2480 
E.250
1/4.250
6.4mm.2520 
6.5mm.2559 
F.25705/16-1880-90 [160]48-55 [100]
6.6mm.2598 
G.2610 
6.7mm.2638M8 x 1.25
17/64.2656 
6.75mm.2657 
H.26605/16-24100-140 [225]60-85 [140]
6.8mm.2677 
6.9mm.2717 
I.2720 
7mm.2756M8 x 1
J.2770 
7.1mm.2795 
K.2810 
9/32.2812 
7.2mm.2835 
7.25mm.2854 
7.3mm.2874 
L.2900 
7.4mm.2913 
M.2950 
7.5mm.2953 
19/64.2969 
7.6mm.2992 
N.3020 
7.7mm.3031 
7.75mm.3051 
7.8mm.3071 
7.9mm.3110 
5/16.31253/8-16160-185 [275]95-100 [170]
8mm.3150 
O.3160 
8.1mm.3189 
8.2mm.3228 
P.3230 
8.25mm.3248 
8.3mm.3268 
21/64.32813/8-24160-190 [390]95-110 [240]
8.4mm.3307 
Q.3320 
8.5mm.3346M10 x 1.5
8.6mm.3386 
R.3390 
8.7mm.3425M10 x 1.25
11/32.3438 
8.75mm.3445 
8.8mm.3465 
S.3480 
8.9mm.3504 
9mm.3543 
T.35807/16-14235-255 [475]140-155 [280]
9.1mm.3583 
23/64.3594 
9.2mm.3622 
9.25mm.3642 
9.3mm.3661 
U.3680 
9.4mm.3701 
9.5mm.3740 
3/8.3750 
V.3770 
9.6mm.3780 
9.7mm.3819 
9.75mm.3839 
9.8mm.3858 
W.38607/16-20450-500 [840]270-300 [500]
9.9mm.3898 
25/64.3906 
10mm.3937 
X.3970 
Y.4040 
13/32.4062 
Z.4130 
10.5mm.4134M12 x 1.75
27/64.42191/2-13400-480 [880]240-290 [520]
10.8mm.4251M12 x 1.50
11mm.4331M12 x 1.25
7/16.4375 
11.5mm.4528 
29/64.45311/2-20480-690 [1100]290-410 [660]
15/32.46889/16-12500-700 [1100]300-420 [650]
12mm.4724M14 x 2
31/64.4844 
12.5mm.4921M14 x 1.5
1/2.50009/16-18800-1000 [1600]480-600 [960]
13mm.5118 
33/64.5156 
17/32.53125/8-11700-900 [1500]420-540 [900]
13.5mm.5315 
35/64.5469 
14mm.5512M16 x 2
9/16.56255/8-181100-1300 [2400]600-780 [1400]
14.5mm.5709M16 x 1.5
37/64.5781 
15mm.5906 
19/32.5938 
39/64.6094 
15.5mm.6102M18 x 2.5
5/8.6250 
16mm.6299 
41/64.64063/4-101150-1600 [2500]700-950 [1500]
16.5mm.6496M18 x 1.5
21/32.6562 
17mm.6693 
43/64.6719 
11/16.68753/4-161300-1500 [3000]
17.5mm.6890M20 x 2.5
45/64.7031 
18mm.7087 
23/32.7188 
18.5mm.7283M20 x 1.5
47/64.7344 
19mm.7480 
3/4.7500 
49/64.76567/8-92200-3000 [4600]1300-1800 [2700]
19.5mm.7677 
25/32.7812 
20mm.7874 
51/64.79697/8-142500-3000 [7000]1500-1800 [4200]
20.5mm.8071 
13/16.8125 
21mm.8268 
53/64.8281 
27/32.8438 
21.5mm.8465 
55/64.85941-8
22mm.8661 
7/8.8750 
22.5mm.8858 
57/64.8906 
23mm.9055 
29/32.9062 
59/64.9219 
23.5mm.9252 
15/16.9375 
24mm.9449 
61/64.9531 
24.5mm.9646 
31/32.9688 
25mm.9843 
63/64.9844 
11.000