Threads and Threading - Sportpilot.info

Machinery's Handbook 27th Edition
TRAPEZOIDAL METRIC THREAD 1813
Trapezoidal Metric Thread — Preferred Basic Sizes DIN 103
H=1.866P
hs =0.5P + a
he =0.5P + a − b
hn =0.5P + 2a − b
has =0.25P
r*
has
hs
Ds
E
Ks
30˚
Bolt
P
Nut
a
he
b
H
H/2
hn
Dn
Kn
Nom. &
Depth of
Bolt Nut
Major
Diam.of
Bolt, Ds Pitch,
P
Pitch
Diam.,
E
Engagement,
he Clearance
a b
Minor
Diam.,
Ks Depth of
Thread,
hs Major
Diam.,
Dn Minor
Diam.,
Kn Depth of
Thread,
hn 10 3 8.5 1.25 0.25 0.5 6.5 1.75 10.5 7.5 1.50
12 3 10.5 1.25 0.25 0.5 8.5 1.75 12.5 9.5 1.50
14 4 12 1.75 0.25 0.5 9.5 2.25 14.5 10.5 2.00
16 4 14 1.75 0.25 0.5 11.5 2.25 16.5 12.5 2.00
18 4 16 1.75 0.25 0.5 13.5 2.25 18.5 14.5 2.00
20 4 18 1.75 0.25 0.5 15.5 2.25 20.5 16.5 2.00
22 5 19.5 2 0.25 0.75 16.5 2.75 22.5 18 2.00
24 5 21.5 2 0.25 0.75 18.5 2.75 24.5 20 2.25
26 5 23.5 2 0.25 0.75 20.5 2.75 26.5 22 2.25
28 5 25.5 2 0.25 0.75 22.5 2.75 28.5 24 2.25
30 6 27 2.5 0.25 0.75 23.5 3.25 30.5 25 2.75
32 6 29 2.5 0.25 0.75 25.5 3.25 32.5 27 2.75
36 6 33 2.5 0.25 0.75 29.5 3.25 36.5 31 2.75
40 7 36.5 3 0.25 0.75 32.5 3.75 40.5 34 3.25
44 7 40.5 3 0.25 0.75 36.5 3.75 44.5 38 3.25
48 8 44 3.5 0.25 0.75 39.5 4.25 48.5 41 3.75
50 8 46 3.5 0.25 0.75 41.5 4.25 50.5 43 3.75
52 8 48 3.5 0.25 0.75 43.5 4.25 52.5 45 3.75
55 9 50.5 4 0.25 0.75 45.5 4.75 55.5 47 4.25
60 9 55.5 4 0.25 0.75 50.5 4.75 60.5 52 4.25
65 10 60 4.5 0.25 0.75 54.5 5.25 65.5 56 4.75
70 10 65 4.5 0.25 0.75 59.5 5.25 70.5 61 4.75
75 10 70 4.5 0.25 0.75 64.5 5.25 75.5 66 4.75
80 10 75 4.5 0.25 0.75 69.5 5.25 80.5 71 4.75
85 12 79 5.5 0.25 0.75 72.5 6.25 85.5 74 5.75
90 12 84 5.5 0.25 0.75 77.5 6.25 90.5 79 5.75
95 12 89 5.5 0.25 0.75 82.5 6.25 95.5 84 5.75
100 12 94 5.5 0.25 0.75 87.5 6.25 100.5 89 5.75
110 12 104 5.5 0.25 0.75 97.5 6.25 110.5 99 5.75
120 14 113 6 0.5 1.5 105 7.5 121 108 6.5
130 14 123 6 0.5 1.5 115 7.5 131 118 6.5
140 14 133 6 0.5 1.5 125 7.5 141 128 6.5
150 16 142 7 0.5 1.5 133 8.5 151 136 7.5
160 16 152 7 0.5 1.5 143 8.5 161 146 7.5
170 16 162 7 0.5 1.5 153 8.5 171 156 7.5
180 18 171 8 0.5 1.5 161 9.5 181 164 8.5
190 18 181 8 0.5 1.5 171 9.5 191 174 8.5
200 18 191 8 0.5 1.5 181 9.5 201 184 8.5
210 20 200 9 0.5 1.5 189 10.5 211 192 9.5
220 20 210 9 0.5 1.5 199 10.5 221 202 9.5
230 20 220 9 0.5 1.5 209 10.5 231 212 9.5
240 22 229 10 0.5 1.5 217 11.5 241 220 10.5
250 22 239 10 0.5 1.5 227 11.5 251 230 10.5
260 22 249 10 0.5 1.5 237 11.5 261 240 10.5
270 24 258 11 0.5 1.5 245 12.5 271 248 11.5
280 24 268 11 0.5 1.5 255 12.5 281 258 11.5
290 24 278 11 0.5 1.5 265 12.5 291 268 11.5
300 26 287 12 0.5 1.5 273 13.5 301 276 12.5
All dimensions are in millimeters.
*Roots are rounded to a radius, r, equal to 0.25 mm for pitches of from 3 to 12 mm inclusive and 0.5
mm for pitches of from 14 to 26 mm inclusive for power transmission.
Copyright 2004, Industrial Press, Inc., New York, NY