CHARTS

AN Bolt Torque

AN Bolt size	Size / Threads	Inch lbs	Foot lbs
AN3	10-32	20-25	1.6-2.0
AN4	1/4-28	50-70	4.2-5.8
AN5	5/16-24	100-140	8.3-11.6
AN6	3/8-24	160-190	13.3-15.8
AN7	7/16-20	450-500	37.5-41.7
AN8	1/2-20	480-690	40.0-57.5
AN9	9/16-18	800-1000	66.7-83.3
AN10	5/8-18	1100-1500	91.6-125.0

Fractional Drills

Fractional Drills
Fraction	Decimal "
1/64"	.0156
1/32"	.0312
3/64"	.0468
1/16"	.0625
5/64"	.0781
3/32"	.0937
7/64"	.1093
1/8"	.125
9/64"	.1406
5/32"	.1562
11/64"	.1718
3/16"	.1875

Fractional Drills
Fraction	Decimal "
13/64"	.2031
7/32"	.2187
15/64"	.2343
1/4"	.25
17/64"	.2656
9/32"	.2812
19/64"	.2968
5/16"	.3125
21/64"	.3281
11/32'	.3437
23/64"	.3593
3/8"	.375
25/64"	.3906

Fractional Drills
Fraction	Decimal "
13/32"	.4062
27/64	.4218
7/16"	.4375
29/64"	.4531
15/32"	.4687
31/64"	.4843
1/2"	.5
17/32"	.5312
9/16"	.5625
19/32"	.5937
5/8"	.625
3/4"	.75
7/8"	.875

Number Drills

Number Drills
Number	Decimal "
1	*.2280*
2	*.2210*
3	*.2130*
4	*.2090*
5	*.2055*
6	*.2040*
7	*.2010*
8	*.1990*
9	*.1960*
10	*.1935*
11	*.1910*
12	*.1890*
13	*.1850*
14	*.1820*
15	*.1800*
16	*.1770*
17	*.1730*
18	*.1695*
19	*.1660*
20	*.1610*

*Number Drills*
Number	Decimal "
21	.1590
22	.1570
23	.1540
24	.1520
25	.1495
26	.1470
27	.1440
28	.1415
29	.1360
30	.1287
31	.1200
32	.1160
33	1130
34	.1110
35	.1100
36	.1065
37	.1040
38	.1015
39	.0995
40	.0980

*Number Drills*
*Number*	*Decimal "*
41	*.0960*
42	*.0935*
43	*.0890*
44	*.0860*
45	*.0820*
46	*.0810*
47	*.0785*
48	*.0760*
49	*.0730*
50	*.0700*
51	*.0670*
52	*.0635*
53	*.0559*
54	*.0550*
55	*.0520*
56	*.0465*
57	*.0430*
58	*.0420*
59	*.0410*
60	*.0400*

Letter Drills

Letter Drills
Letter	Decimal "
A	.2340
B	.2380
C	.2420
D	.2460
E	.2500
F	.2570
G	.2610
H	.2660
I	.2720

Letter Drills
Letter	Decimal "
J	.2770
K	.2810
L	.2900
M	.2950
N	.3020
O	.3160
P	.3230
Q	.3320
R	.3390

Letter Drills
Letter	Decimal "
S	.3480
T	.3580
U	.3680
V	.3770
W	.3860
X	.3970
Y	.4040
Z	.4130

Decimal Drills

Decimal	mm	Drill
*.0135*	*0.34*	80
*.0145*	*0.37*	79
*.0156*	*0.40*	*1/64*
*.0160*	*0.41*	78
*.0180*	*0.46*	77
*.0200*	*0.51*	76
*.0210*	*0.53*	75
*.0225*	*0.57*	74
*.0240*	*0.61*	73
*.0250*	*0.64*	72
*.0260*	*0.66*	71
*.0280*	*0.71*	70
*.0292*	*0.74*	69
*.0310*	*0.79*	68
*.0313*	*.079*	*1/32*
*.0320*	*0.81*	67
*.0330*	*0.84*	66
*.0350*	*0.89*	65
*.0360*	*0.91*	64
*.0370*	*0.94*	63
*.0380*	*0.97*	62
*.0390*	*0.99*	61
*.0400*	*1.02*	60
*.0410*	*1.04*	59
*.0420*	*1.07*	58
*.0430*	*1.09*	57
*.0465*	*1.18*	56
*.0469*	*1.19*	*3/64*
*.0520*	*1.32*	55
*.0550*	*1.40*	54
*.0595*	*1.51*	53
*.0625*	*1.59*	*1/16*
*.0635*	*1.61*	52
*.0670*	*1.70*	51
*.0700*	1.78	50
*.0730*	*1.85*	49
*.0760*	*1.93*	48
*.0781*	*1.98*	*5/64*
*.0785*	*1.99*	47
*.0810*	*2.06*	46
*.0820*	*2.08*	45
*.0860*	*2.18*	44
*.0890*	*2.26*	43
*.0935*	*2.37*	42
*.0938*	*2.38*	*3/32*
*.0960*	*2.44*	41
*.0980*	*2.50*	40
*.0995*	*2.53*	39
*.1015*	2.58	38
*.1040*	*2.64*	37
*.1065*	*2.71*	36
*1094*	*2.78*	*7/64*
*.1100*	*2.79*	35
*.1110*	*2.82*	34

Decimal	mm	Drill
*.1130*	*2.87*	33
*.1160*	*2.95*	32
*.1200*	*3.05*	31
.1250	3.18	1/8
*.1285*	*3.26*	30
*.1360*	*3.45*	29
*.1405*	*3.57*	28
*.1406*	*3.57*	*9/64*
*.1440*	*3.66*	27
*.1470*	*3.73*	26
*.1495*	*3.80*	25
.1520	3.86	24
*.1540*	*3.91*	23
*.1562*	*3.97*	*5/32*
*.1570*	*3.99*	22
*.1590*	*4.04*	21
*.1610*	*4.09*	20
*.1660*	*4.22*	19
*.1695*	*4.31*	18
*.1719*	*4.37*	*11/64*
*.1730*	*4.39*	17
*.1770*	*4.50*	16
*.1800*	*4.57*	15
*.1820*	*4.62*	14
*.1850*	*4.70*	13
*.1875*	*4.76*	*3/16*
*.1890*	*4.80*	12
.1910	4.85	11
*.1935*	*4.91*	10
*.1960*	*4.98*	9
*.1990*	*5.05*	8
*.2010*	*5.11*	7
*.2031*	*5.16*	13/64
*.2040*	*5.18*	6
*.2055*	*5.22*	5
*.2090*	*5.31*	4
*.2130*	*5.41*	3
.2188	5.56	7/32
.2210	5.61	2
.2280	5.79	1
.2340	5.94	A
.2344	5.95	15/64
.2380	6.05	B
.2420	6.15	C
.2460	6.25	D
.2500	6.35	1/4
.2500	6.35	E
.2570	6.53	F
.2610	6.63	G
*.2656*	*6.75*	17/64
*.2660*	*6.76*	H
*.2720*	*6.91*	I
*.2770*	*7.04*	J
*.2810*	*7.14*	K

Decimal	mm	Drill
*.2812*	*7.14*	*9/32*
*.2900*	*7.37*	L
*.2950*	*7.49*	M
*.2969*	*7.54*	*19/64*
.3020	7.67	N
*.3125*	*7.94*	*5/16*
*.3160*	*8.03*	O
*.3230*	*8.20*	P
*.3281*	*8.33*	*21/64*
*.3320*	*8.43*	Q
*.3390*	*8.61*	R
*.3438*	*8.73*	*11/32*
*.3480*	*8.84*	S
*.3580*	*9.09*	T
*.3594*	*9.13*	*23/64*
*.3680*	*9.35*	U
*.3750*	*9.53*	*3/8*
*.3770*	*9,56*	V
*.3860*	*9.80*	W
*.3906*	*9.92*	*25/64*
*.3970*	*10.08*	X
*.4040*	*10.26*	Y
*.4062*	*10.32*	*13/32*
*.4130*	*10.49*	Z
*.4219*	*10.72*	*27/64*
*.4375*	*11.11*	*7/16*
*.4531*	*11.51*	*29/64*
*.4688*	*11.91*	*15/32*
*.4844*	*12.30*	31/64
*.5000*	*12.70*	*1/2*
*.5156*	*13.10*	*33/64*
*.5312*	*13.49*	*17/32*
*.5469*	*13.89*	*35/64*
*.5625*	*14.29*	*9/16*
*.5781*	*14.68*	*37/64*
*.5938*	*15.08*	*19/32*
*.6094*	*15.48*	*39/64*
*.6250*	*15.88*	*5/8*
*.6406*	*16.27*	*41/64*
*.6562*	*16.67*	*21.32*
*.6719*	*17.07*	*43/64*
*.6875*	*17.46*	*11/16*
*.7031*	*17.86*	*45/64*
*.7188*	*18.26*	*23/32*
*.7344*	*18.65*	*47/64*
*.7500*	*19.05*	*3/4*
*.7656*	*19.45*	*49/64*
*.7812*	*19.84*	*25/32*
*.7964*	*20.24*	*51/64*
*.8125*	*20.64*	*13/64*
*.8281*	*21.03*	*53/64*
*.8438*	*21.43*	*27/32*
*.8594*	*21.84*	55./64
*.8750*	*22.23*	*7/8*

Taps & Drill Size

Tap Size	Drill Size	Drill in Decimal	% of Thread
0-80	#56	.0465	73
	3/64"	.0469	71
1-64	#54	.0550	80
	#53	.0595	59
1-72	#53	.0595	67
	1/16"	.0625	50
2-56	#51	.0670	73
	#50	.0700	62
2-64	#50	.0700	70
	#49	.0730	56
3-46	#48	.0760	77
	5/64"	.0781	70
3-56	#46	.0810	69
	#45	.0820	65
4-40	#44	.0860	73
	#43	.0890	65
4-48	#42	.0935	61
	3/32"	.0938	60

Tap Size	Drill Size	Drill in Decimal	% of Thread
5-40	#40	.0980	75
	#38	.1015	65
5-44	#38	.1015	71
	#37	.1040	63
6-32	#37	.1040	77
	7/64"	.1094	64
6-40	#34	.1110	74
	#33	.1130	69
8-32	#29	.1360	62
	#28	.1405	51
8-36	#29	.1360	70
	9/64"	.1406	57
10-24	#27	.1440	78
	#25	.1495	69
10-32	5/32"	1563	74
	#21	.1590	68
12-24	11/64"	.1719	74
	#17	.1730	73
12-28	#16	.1770	76
	#15	.1800	70

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