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Piper Dakota - Decimal Equivalents of Drill Sizes

Piper Dakota
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CHART 9104. DECIMAL EQUIVALENTS OF DRILL SIZES
Decimal Equivalents of Drill Sizes From 1/2” to No. 80
Size Decimal Size Decimal Size Decimal Size Decimal
Equiv. Equiv. Equiv. Equiv.
1 /2 0.500 G 0.261 5/32 0.1562 51 0.067
31 /64 0.4843 F 0.257 23 0.154 52 0.0635
15/32 0.4687 E-1/4 0.250 24 0.1 52 1/16 0.0625
29/64 0.4531 D 0.246 25 0.1495 53 0.0595
7/16 0.4375 C 0.242 26 0.147 54 0.055
27/64 0.4218 B 0.238 27 0.144 55 0.052
Z 0.413 15/64 0.2343 9/64 0.1406 3/64 0.0468
13/32 0.4062 A 0.234 28 0.1405 56 0.0465
Y 0.404 1 0.228 29 0.136 57 0.043
X 0.397 2 0.221 30 0.1 285 58 0.042
0.3906 7/32 0.2187 1 /8 0.1 25 59 0.041
25/64 0.386 3 0.213 31 0.1 20 60 0.040
W 0.377 4 0.209 32 0.116 61 0.039
V 0.375 5 0.2055 33 0.113 62 0.038
3/8 0.368 6 0.204 34 0.111 63 0.037
0.3593 13/64 0.2031 35 0.110 64 0.036
23/64 0.358 7 0.201 7/64 0.1093 65 0.035
T 0.346 8 0.199 36 0.1065 66 0.033
S 0.3437 9 0.196 37 0.104 1/32 0.0312
11/32 0.339 10 0.1935 38 0.1015 67 0.032
0.332 11 0.191 39 0.0995 68 0.031
Q 0 3281 12 0.189 40 0.098 69 0.029
21/64 0 323 3/16 0.1875 41 0.096 70 0.028
P 0.316 13 0.185 3/32 0.0937 71 0.026
O 0.3125 14 0.182 42 0.0935 72 0.025
5/16
0.302 15 0.180 43 0.089 73 0.024
N 0.2968 16 0.177 44 0.086 74 0.0229
19/64 0.295 17 0.173 45 0.082 75 0.021
M 0.290 11 /64 0.1718 46 0.081 76 0.020
L 0.2812 18 0.1695 47 0.0785 77 0.018
9/32
0.281 19 0.1 66 5/64 0.0781 1/64 0.0156
K 0.277 20 0.161 48 0.076 78 0.016
J 0.272 21 0.159 49 0.073 79 0.0145
H 0 2656 22 0.157 50 0.070 80 0.0135
17/64 _
DRILL SIZES AVAILA8LE:
Drill may be obtained in regular sizes to a 4-inch diameter, and increase in 64ths of an inch. The regular
metric drills vary from 2 to 76mm. and increase in 0.5mm. variations.
91 - 03 - 00
Page 91 - 10
Reissued: August 1, 1986
3B4
PIPER AIRCRAFT
PA-28-236
MAINTENANCE MANUAL

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