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| Body Diameter, E | AF, F | AC, G | Head Height, H | Minimum Fillet Radius, | Thread Length, | Maximum Transition Thread Length, | Maximum Runout of Bearing | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pitch | Max. | Min. | Max. | Min. | Max. | Min. | Max. | Min. | R | LT, Ref. | Y, Ref. | Surface FIM |
| M12 × 1.75 | 12.70 | 11.30 | 21.00 | 20.16 | 24.25 | 22.78 | 7.95 | 7.05 | 0.60 | 25 | 5.2 | 0.4 |
| M16 × 2 | 16.70 | 15.30 | 27.00 | 26.16 | 31.18 | 29.56 | 10.75 | 9.25 | 0.60 | 31 | 6.0 | 0.5 |
| M20 × 2.5 | 20.84 | 19.16 | 34.00 | 33.00 | 39.26 | 37.29 | 13.40 | 11.60 | 0.80 | 36 | 7.5 | 0.6 |
| M22 × 2.5 | 22.84 | 21.16 | 36.00 | 35.00 | 41.57 | 39.55 | 14.90 | 13.10 | 0.80 | 38 | 7.5 | 0.6 |
| M24 × 3 | 24.84 | 23.16 | 41.00 | 40.00 | 47.34 | 45.20 | 15.90 | 14.10 | 1.00 | 41 | 9.0 | 0.7 |
| M27 × 3 | 27.84 | 26.16 | 46.00 | 45.00 | 53.12 | 50.85 | 17.90 | 16.10 | 1.20 | 44 | 9.0 | 0.8 |
| M30 × 3.5 | 30.84 | 29.16 | 50.00 | 49.00 | 57.74 | 55.37 | 19.75 | 17.65 | 1.20 | 49 | 10.5 | 0.9 |
| M36 × 4 | 37.00 | 35.00 | 60.00 | 58.80 | 69.28 | 66.44 | 23.55 | 21.45 | 1.50 | 56 | 12.0 | 1.0 |
GENERAL NOTE: See Table 2 for LG and LS dimensions.
| Nominal Bolt Diameter and Thread Pitch | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal Length, | M12 × 1.75 | M16 × 2 | M20 × 2.5 | M22 × 2.5 | M24 × 3 | M27 × 3 | M30 × 3.5 | M36 × 4 | |||||||||
| L G, | L S, | L G, | L S, | L G, | L S, | L G, | L S, | L G, | L S, | L G, | L S, | L G, | L S, | L G, | L S, | ||
| Max. | Min. | Max. | Min. | Max. | Min. | Max. | Min. | Max. | Min. | Max. | Min. | Max. | Min. | Max. | Min. | ||
| 40 | 15 | 9.8 | … | … | … | … | … | … | … | … | … | … | … | … | … | … | |
| 45 | 20 | 14.8 | 14 | 8 | … | … | … | … | … | … | … | … | … | … | … | … | |
| 50 | 25 | 19.8 | 19 | 13 | 14 | 6.5 | … | … | … | … | … | … | … | … | … | … | |
| 55 | 30 | 24.8 | 24 | 18 | 19 | 11.5 | 17 | 9.5 | … | … | … | … | … | … | … | … | |
| 60 | 35 | 29.8 | 29 | 23 | 24 | 16.5 | 22 | 14.5 | 19 | 10 | … | … | … | … | … | … | |
| 65 | 40 | 34.8 | 34 | 28 | 29 | 21.5 | 27 | 19.5 | 24 | 15 | 21 | 12 | … | … | … | … | |
| 70 | 45 | 39.8 | 39 | 33 | 34 | 26.5 | 32 | 24.5 | 29 | 20 | 26 | 17 | 21 | 10.5 | … | … | |
| 75 | 50 | 44.8 | 44 | 38 | 39 | 31.5 | 37 | 29.5 | 34 | 25 | 31 | 22 | 26 | 15.5 | … | … | |
| 80 | 55 | 49.8 | 49 | 43 | 44 | 36.5 | 42 | 34.5 | 39 | 30 | 36 | 27 | 31 | 20.5 | 19 | 7 | |
| 85 | 60 | 54.8 | 54 | 48 | 49 | 41.5 | 47 | 39.5 | 44 | 35 | 41 | 32 | 36 | 25.5 | 24 | 12 | |
| 90 | 65 | 59.8 | 59 | 53 | 54 | 46.5 | 52 | 44.5 | 49 | 40 | 46 | 37 | 41 | 30.5 | 29 | 17 | |
| 95 | 70 | 64.8 | 64 | 58 | 59 | 51.5 | 57 | 49.5 | 54 | 45 | 51 | 42 | 46 | 35.5 | 34 | 22 | |
| 100 | 75 | 69.8 | 69 | 63 | 64 | 56.5 | 62 | 54.5 | 59 | 50 | 56 | 47 | 51 | 40.5 | 39 | 27 | |
| 110 | … | … | 79 | 73 | 74 | 66.5 | 72 | 64.5 | 69 | 60 | 66 | 57 | 61 | 50.5 | 44 | 32 | |
| 120 | … | … | 89 | 83 | 84 | 76.5 | 82 | 74.5 | 79 | 70 | 76 | 67 | 71 | 60.5 | 54 | 42 | |
| 130 | … | … | 99 | 93 | 94 | 86.5 | 92 | 84.5 | 89 | 80 | 86 | 77 | 81 | 70.5 | 64 | 52 | |
| 140 | … | … | 109 | 103 | 104 | 96.5 | 102 | 94.5 | 99 | 90 | 96 | 87 | 91 | 80.5 | 74 | 62 | |
| 150 | … | … | 119 | 113 | 114 | 106.5 | 112 | 104.5 | 109 | 100 | 106 | 97 | 101 | 90.5 | 84 | 72 | |
| 160 | … | … | 129 | 123 | 124 | 116.5 | 122 | 114.5 | 119 | 110 | 116 | 107 | 111 | 100.5 | 94 | 82 | |
| 170 | … | … | 139 | 133 | 134 | 126.5 | 132 | 124.5 | 129 | 120 | 126 | 117 | 121 | 110.5 | 104 | 92 | |
| 180 | … | … | 149 | 143 | 144 | 136.5 | 142 | 134.5 | 139 | 130 | 136 | 127 | 131 | 120.5 | 114 | 102 | |
| 190 | … | … | 159 | 153 | 154 | 146.5 | 152 | 144.5 | 149 | 140 | 146 | 137 | 141 | 130.5 | 124 | 112 | |
| 200 | … | … | 169 | 163 | 164 | 156.5 | 162 | 154.5 | 159 | 150 | 156 | 147 | 151 | 140.5 | 134 | 122 | |
| 210 | … | … | 179 | 173 | 174 | 166.5 | 172 | 164.5 | 169 | 160 | 166 | 157 | 161 | 150.5 | 144 | 132 | |
| 220 | … | … | 189 | 183 | 184 | 176.5 | 182 | 174.5 | 179 | 170 | 176 | 167 | 171 | 160.5 | 154 | 142 | |
| 230 | … | … | 199 | 193 | 194 | 186.5 | 192 | 184.5 | 189 | 180 | 186 | 177 | 181 | 170.5 | 164 | 152 | |
| 240 | … | … | 209 | 203 | 204 | 196.5 | 202 | 194.5 | 199 | 190 | 196 | 187 | 191 | 180.5 | 174 | 162 | |
| 250 | … | … | 219 | 213 | 214 | 206.5 | 212 | 204.5 | 209 | 200 | 206 | 197 | 201 | 190.5 | 184 | 172 | |
| 260 | … | … | 229 | 223 | 224 | 216.5 | 222 | 214.5 | 219 | 210 | 216 | 207 | 211 | 200.5 | 194 | 182 | |
| 270 | … | … | 239 | 233 | 234 | 226.5 | 232 | 224.5 | 229 | 220 | 226 | 217 | 221 | 210.5 | 204 | 192 | |
| 280 | … | … | 249 | 243 | 244 | 236.5 | 242 | 234.5 | 239 | 230 | 236 | 227 | 231 | 220.5 | 214 | 202 | |
| 290 | … | … | 259 | 253 | 254 | 246.5 | 252 | 244.5 | 249 | 240 | 246 | 237 | 241 | 230.5 | 224 | 212 | |
| 300 | … | … | 269 | 263 | 264 | 256.5 | 262 | 254.5 | 259 | 250 | 256 | 247 | 251 | 240.5 | 234 | 222 | |
| Pitch | Width Across Flats, F | Width Across Corners, G | Thickness, H | Maximum Total Runout of Bearing | |||
|---|---|---|---|---|---|---|---|
| Max. | Min. | Max. | Min. | Max. | Min. | Surface FIM | |
| M12 × 1.75 | 21.00 | 20.16 | 24.25 | 22.78 | 12.3 | 11.9 | 0.38 |
| M16 × 2.00 | 27.00 | 26.16 | 31.18 | 29.56 | 17.1 | 16.4 | 0.47 |
| M20 × 2.50 | 34.00 | 33.00 | 39.26 | 37.29 | 20.7 | 19.4 | 0.58 |
| M22 × 2.50 | 36.00 | 35.00 | 41.57 | 39.55 | 23.6 | 22.3 | 0.63 |
| M24 × 3.00 | 41.00 | 40.00 | 47.34 | 45.20 | 24.2 | 22.9 | 0.72 |
| M27 × 3.00 | 46.00 | 45.00 | 53.12 | 50.85 | 27.6 | 26.3 | 0.80 |
| M30 × 3.50 | 50.00 | 49.00 | 57.74 | 55.37 | 30.7 | 29.1 | 0.87 |
| M36 × 4.00 | 60.00 | 58.80 | 69.28 | 66.44 | 36.6 | 35.0 | 1.05 |
| T | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Nominal Size | I.D. | O.D. | Standard | Extra Thick | Clipped Width, E, Min. | ||||
| [Note (1)] | Max. | Min. | Max. | Min. | Max. | Min. | Max. | Min. | [Note (2)] |
| 12 | 14.4 | 14.0 | 27.0 | 25.7 | 4.6 | 3.1 | 10.0 | 8.0 | 10.5 |
| 16 | 18.4 | 18.0 | 34.0 | 32.4 | 4.6 | 3.1 | 10.0 | 8.0 | 14.0 |
| 20 | 22.5 | 22.0 | 42.0 | 40.4 | 4.6 | 3.1 | 10.0 | 8.0 | 17.5 |
| 22 | 24.5 | 24.0 | 44.0 | 42.4 | 4.6 | 3.4 | 10.0 | 8.0 | 19.2 |
| 24 | 26.5 | 26.0 | 50.0 | 48.4 | 4.6 | 3.4 | 10.0 | 8.0 | 21.0 |
| 27 | 30.5 | 30.0 | 56.0 | 54.1 | 4.6 | 3.4 | 10.0 | 8.0 | 23.6 |
| 30 | 33.6 | 33.0 | 60.0 | 58.1 | 4.6 | 3.4 | 10.0 | 8.0 | 26.2 |
| 36 | 39.6 | 39.0 | 72.0 | 70.1 | 4.6 | 3.4 | 10.0 | 8.0 | 31.5 |
| 42 | 45.6 | 45.0 | 84.0 | 81.8 | 7.2 | 4.6 | 10.0 | 8.0 | 36.7 |
| 48 | 52.7 | 52.0 | 95.0 | 92.8 | 7.2 | 4.6 | 10.0 | 8.0 | 42.0 |
| 56 | 62.7 | 62.0 | 107.0 | 104.8 | 8.7 | 6.1 | 10.0 | 8.0 | 49.0 |
| 64 | 70.7 | 70.0 | 118.0 | 115.8 | 8.7 | 6.1 | 10.0 | 8.0 | 56.0 |
| 72 | 78.7 | 78.0 | 130.0 | 127.5 | 8.7 | 6.1 | 10.0 | 8.0 | 63.0 |
| 80 | 86.9 | 86.0 | 142.0 | 139.5 | 8.7 | 6.1 | 10.0 | 8.0 | 70.0 |
| 90 | 96.9 | 96.0 | 159.0 | 156.5 | 8.7 | 6.1 | 10.0 | 8.0 | 78.7 |
| 100 | 107.9 | 107.0 | 176.0 | 173.5 | 8.7 | 6.1 | 10.0 | 8.0 | 87.5 |
GENERAL NOTE:
(1) Nominal washer sizes are intended for use with comparable nominal
bolt diameters.
(2) Clipped edge, E, shall not be closer than 0.875 times the nominal bolt diameter
from the center of the washer.
| Size | C | Number of Protrusions | E, | F | C | Number of Protrusions | E, | F, | A | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| [Note (2)] | Min. | Max. | (Equally Spaced) | Min. | Max. | Min. | Max. | (Equally Spaced) | Min. | Max. | Min. | Max. | B |
| M12 | … | … | … | … | … | … | … | … | … | … | … | … | … |
| M16 | 35.2 | 36.8 | 4 | 3.2 | 5.5 | 35.2 | 36.8 | 4 | 3.6 | 6.0 | 16.75 | 16.85 | 25.0 |
| M20 | 44.0 | 46.0 | 5 | 3.6 | 6.0 | 44.0 | 46.0 | 6 | 3.6 | 6.0 | 20.95 | 21.05 | 29.0 |
| M22 | 48.4 | 50.6 | 5 | 3.6 | 6.0 | 48.4 | 50.6 | 6 | 4.0 | 7.0 | 23.05 | 23.15 | 33.0 |
| M24 | 52.8 | 55.2 | 6 | 4.0 | 7.0 | 52.8 | 55.2 | 7 | 4.0 | 7.0 | 25.15 | 25.25 | 38.0 |
| M27 | 59.4 | 62.1 | 6 | 4.0 | 7.0 | 59.4 | 62.1 | 7 | 4.0 | 7.0 | 28.3 | 28.4 | 43.0 |
| M30 | 66.0 | 69.0 | 7 | 4.0 | 7.0 | 66.0 | 69.0 | 8 | 4.8 | 7.5 | 31.45 | 31.55 | 46.5 |
| M36 | 79.2 | 82.8 | 8 | 4.8 | 7.5 | 79.2 | 82.8 | 9 | 4.8 | 7.5 | 37.75 | 37.85 | 56.0 |
GENERAL NOTE:
(1) Type 8.8 and Type 10.9 are intended for use on ASTM A325M and ASTM
A490M bolts, respectively.
(2) Nominal direct tension indicator sizes are intended for use with
fasteners of the same nominal diameter.