Thread StandardsCompared to standard threads, a fine thread has a smaller pitch which increases the resilience. It is used e.g. for adjusting screws in measuring instruments because it allows for finer settings. The term consists of the letter M, the nominal diameter and the pitch, the flank angle is 60°.
| Nominal Diameter M | Pitch mm | Tapping Drill Size mm |
| M 28.0 | 3.00 | 24.75 |
| M 30.0 | 3.00 | 26.75 |
| M 32.0 | 3.00 | 28.75 |
| M 33.0 | 3.00 | 29.75 |
| M 34.0 | 3.00 | 30.75 |
| M 35.0 | 3.00 | 31.75 |
| M 36.0 | 3.00 | 32.75 |
| M 38.0 | 3.00 | 34.75 |
| M 39.0 | 3.00 | 35.75 |
| M 40.0 | 3.00 | 36.75 |
| M 42.0 | 3.00 | 38.75 |
| M 45.0 | 3.00 | 41.75 |
| M 48.0 | 3.00 | 44.75 |
| M 50.0 | 3.00 | 46.75 |
| M 52.0 | 3.00 | 48.75 |
| M 55.0 | 3.00 | 51.75 |
| M 56.0 | 3.00 | 52.75 |
| M 58.0 | 3.00 | 54.75 |
| M 60.0 | 3.00 | 56.75 |
| M 62.0 | 3.00 | 58.75 |
| M 64.0 | 3.00 | 60.75 |
| M 65.0 | 3.00 | 61.75 |
| M 68.0 | 3.00 | 64.75 |
| M 70.0 | 3.00 | 66.75 |
| M 72.0 | 3.00 | 68.75 |
| M 75.0 | 3.00 | 71.75 |
| M 76.0 | 3.00 | 72.75 |
| M 78.0 | 3.00 | 74.75 |
| M 80.0 | 3.00 | 76.75 |
| M 82.0 | 3.00 | 78.75 |
| M 85.0 | 3.00 | 81.75 |
| M 88.0 | 3.00 | 84.75 |
| M 90.0 | 3.00 | 86.75 |
| M 92.0 | 3.00 | 88.75 |
| M 95.0 | 3.00 | 91.75 |
| M 98.0 | 3.00 | 94.75 |
| M 100.0 | 3.00 | 96.75 |
| M 102.0 | 3.00 | 98.75 |
| M 105.0 | 3.00 | 101.75 |
| M 108.0 | 3.00 | 104.75 |
| M 110.0 | 3.00 | 106.75 |
| M 112.0 | 3.00 | 108.75 |
| M 115.0 | 3.00 | 111.75 |
| M 118.0 | 3.00 | 114.75 |
| M 120.0 | 3.00 | 116.75 |
| M 122.0 | 3.00 | 118.75 |
| M 125.0 | 3.00 | 121.75 |
| M 128.0 | 3.00 | 124.75 |
| M 130.0 | 3.00 | 126.75 |
| M 132.0 | 3.00 | 128.75 |
| M 135.0 | 3.00 | 131.75 |
| M 138.0 | 3.00 | 134.75 |
| M 140.0 | 3.00 | 136.75 |
| M 142.0 | 3.00 | 138.75 |
| M 145.0 | 3.00 | 141.75 |
| M 148.0 | 3.00 | 144.75 |
| M 150.0 | 3.00 | 146.75 |
| M 152.0 | 3.00 | 148.75 |
| M 155.0 | 3.00 | 151.75 |
| M 158.0 | 3.00 | 154.75 |
| M 160.0 | 3.00 | 156.75 |
| M 162.0 | 3.00 | 158.75 |
| M 165.0 | 3.00 | 161.75 |
| M 168.0 | 3.00 | 164.75 |
| M 170.0 | 3.00 | 166.75 |
| M 172.0 | 3.00 | 168.75 |
| M 175.0 | 3.00 | 171.75 |
| M 178.0 | 3.00 | 174.75 |
| M 180.0 | 3.00 | 176.75 |
| M 182.0 | 3.00 | 178.75 |
| M 185.0 | 3.00 | 181.75 |
| M 188.0 | 3.00 | 184.75 |
| M 190.0 | 3.00 | 186.75 |
| M 192.0 | 3.00 | 188.75 |
| M 195.0 | 3.00 | 191.75 |
| M 198.0 | 3.00 | 194.75 |
| M 200.0 | 3.00 | 196.75 |
| M 202.0 | 3.00 | 198.75 |
| M 205.0 | 3.00 | 201.75 |
| M 208.0 | 3.00 | 204.75 |
| M 210.0 | 3.00 | 206.75 |
| M 212.0 | 3.00 | 208.75 |
| M 215.0 | 3.00 | 211.75 |
| M 218.0 | 3.00 | 214.75 |
| M 220.0 | 3.00 | 216.75 |
| M 222.0 | 3.00 | 218.75 |
| M 225.0 | 3.00 | 221.75 |
| M 228.0 | 3.00 | 224.75 |
| M 230.0 | 3.00 | 226.75 |
| M 232.0 | 3.00 | 228.75 |
| M 235.0 | 3.00 | 231.75 |
| M 238.0 | 3.00 | 234.75 |
| M 240.0 | 3.00 | 236.75 |
| M 242.0 | 3.00 | 238.75 |
| M 245.0 | 3.00 | 241.75 |
| M 248.0 | 3.00 | 244.75 |
| M 250.0 | 3.00 | 246.75 |
| M 252.0 | 3.00 | 248.75 |
| M 255.0 | 3.00 | 251.75 |
| M 258.0 | 3.00 | 254.75 |
| M 260.0 | 3.00 | 256.75 |
| M 262.0 | 3.00 | 258.75 |
| M 265.0 | 3.00 | 261.75 |
| M 268.0 | 3.00 | 264.75 |
| M 270.0 | 3.00 | 266.75 |
| M 272.0 | 3.00 | 268.75 |
| M 275.0 | 3.00 | 271.75 |
| M 278.0 | 3.00 | 274.75 |
| M 280.0 | 3.00 | 276.75 |
| M 282.0 | 3.00 | 278.75 |
| M 285.0 | 3.00 | 281.75 |
| M 288.0 | 3.00 | 284.75 |
| M 290.0 | 3.00 | 286.75 |
| M 292.0 | 3.00 | 288.75 |
| M 295.0 | 3.00 | 291.75 |
| M 298.0 | 3.00 | 294.75 |
| M 300.0 | 3.00 | 296.75 |
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