SI Metric Threads (60 Deg Angle) |
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| Thread Form Data | Tapping Drill | Clearance Drill | |||||||
| Diameter | O/Diameter | Core | Pitch | Depth | Flat | Effective Dia | T.P.I | Dec / Met / Frac | Dec / Met / Frac |
| 6mm | 6.00mm | 4.70mm | 1.00mm | 0.650mm | 0.125mm | 5.350mm | 25.40 | 5.00mm | 6.10mm |
| 7mm | 7.00mm | 5.70mm | 1.00mm | 0.650mm | 0.125mm | 6.350mm | 25.40 | 6.00mm | 9/32" |
| 8mm | 8.00mm | 6.376mm | 1.25mm | 0.812mm | 0.156mm | 7.188mm | 20.32 | 17/64" | 8.20mm |
| 9mm | 9.00mm | 7.376mm | 1.25mm | 0.812mm | 0.156mm | 8.188mm | 20.32 | 7.70mm | 23/64" |
| 10mm | 10.00mm | 8.052mm | 1.50mm | 0.974mm | 0.187mm | 9.026mm | 16.933 | 8.40mm | 10.30mm |
| 11mm | 11.00mm | 9.052mm | 1.50mm | 0.974mm | 0.187mm | 10.026mm | 16.933 | 9.50mm | 7/16" |
| 12mm | 12.00mm | 9.726mm | 1.75mm | 1.137mm | 0.219mm | 10.863mm | 14.514 | 10.25mm | 31/64" |
| 14mm | 14.00mm | 11.402mm | 2.00mm | 1.299mm | 0.250mm | 12.701mm | 12.70 | 12.00mm | 9/16" |
| 16mm | 16.00mm | 13.402mm | 2.00mm | 1.299mm | 0.250mm | 14.701mm | 12.70 | 35/64" | 41/64" |
| 18mm | 18.00mm | 14.752mm | 2.50mm | 1.624mm | 0.312mm | 16.376mm | 10.16 | 39/64" | 23/32" |
| 20mm | 20.00mm | 16.752mm | 2.50mm | 1.624mm | 0.312mm | 18.376mm | 10.16 | 11/16" | 51/64" |
| 22mm | 22.00mm | 18.752mm | 2.50mm | 1.624mm | 0.312mm | 20.376mm | 10.16 | 49/64" | 7/8" |
| 24mm | 24.00mm | 20.102mm | 3.00mm | 1.949mm | 0.375mm | 22.051mm | 8.466 | 21.00mm | 61/64" |
| 27mm | 27.00mm | 23.102mm | 3.00mm | 1.949mm | 0.375mm | 25.051mm | 8.466 | 24.00mm | 1-5/64" |
| 30mm | 30.00mm | 25.454mm | 3.50mm | 2.273mm | 0.438mm | 27.727mm | 7.257 | 26.50mm | 1-3/16" |
| 33mm | 33.00mm | 28.454mm | 3.50mm | 2.273mm | 0.438mm | 30.727mm | 7.257 | 29.50mm | 1-5/16" |
| 36mm | 36.00mm | 30.804mm | 4.00mm | 2.598mm | 0.500mm | 33.402mm | 6.35 | 32.00mm | 1-27/64" |
| 39mm | 39.00mm | 33.804mm | 4.00mm | 2.598mm | 0.500mm | 36.402mm | 6.35 | 35.00mm | 1-35/64" |
SI Metric Threads (60 Deg Angle) |
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| Thread Form Data | Tapping Drill | Clearance Drill | |||||||
| Diameter | O/Diameter | Core | Pitch | Depth | Flat | Effective Dia | T.P.I | Dec / Met / Frac | Dec / Met / Frac |
| 6mm | 0.2362 | 0.2244 | 0.0394 | 0.0256 | 0.0049 | 0.2106 | 25.40 | 0.1968" | 0.2402" |
| 7mm | 0.2756 | 0.2510 | 0.0394 | 0.0256 | 0.0049 | 0.2500 | 25.40 | 0.2362" | 0.2812" |
| 8mm | 0.3150 | 0.2510 | 0.0492 | 0.0320 | 0.0061 | 0.2830 | 20.32 | 0.2656" | 0.3228" |
| 9mm | 0.3543 | 0.2904 | 0.0492 | 0.0320 | 0.0061 | 0.3223 | 20.32 | 0.3031" | 0.3594" |
| 10mm | 0.3937 | 0.3170 | 0.0591 | 0.0383 | 0.0073 | 0.3553 | 16.933 | 0.3307" | 0.4055" |
| 11mm | 0.4331 | 0.3564 | 0.0591 | 0.0383 | 0.0073 | 0.3947 | 16.933 | 0.3740" | 0.4375" |
| 12mm | 0.4724 | 0.3829 | 0.0689 | 0.0448 | 0.0086 | 0.4277 | 14.514 | 0.4035" | 0.4844" |
| 14mm | 0.5512 | 0.4488 | 0.0787 | 0.0512 | 0.0098 | 0.5000 | 12.70 | 0.4724" | 0.5625" |
| 16mm | 0.6299 | 0.5276 | 0.0787 | 0.0512 | 0.0098 | 0.5787 | 12.70 | 0.5469" | 0.6406" |
| 18mm | 0.7087 | 0.5808 | 0.0984 | 0.0639 | 0.0123 | 0.6447 | 10.16 | 0.6094" | 0.7188" |
| 20mm | 0.7874 | 0.6596 | 0.0984 | 0.0639 | 0.0123 | 0.7234 | 10.16 | 0.6875" | 0.7969" |
| 22mm | 0.8662 | 0.7383 | 0.0984 | 0.0639 | 0.0123 | 0.8021 | 10.16 | 0.7656" | 0.8750" |
| 24mm | 0.9449 | 0.7914 | 0.1181 | 0.0767 | 0.0147 | 0.8682 | 8.466 | 0.8268" | 0.9531" |
| 27mm | 1.0630 | 0.9095 | 0.1181 | 0.0767 | 0.0147 | 0.9863 | 8.466 | 0.9449" | 1.0781" |
| 30mm | 1.1811 | 1.0021 | 0.1378 | 0.0895 | 0.0172 | 1.0916 | 7.257 | 1.0433" | 1.1875" |
| 33mm | 1.2992 | 1.1202 | 0.1378 | 0.0895 | 0.0172 | 1.2097 | 7.257 | 1.1614" | 1.3125" |
| 36mm | 1.4173 | 1.2128 | 0.1575 | 0.1023 | 0.0197 | 1.3150 | 6.35 | 1.2598" | 1.4219! |
| 39mm | 1.5355 | 1.3309 | 0.1575 | 0.1023 | 0.0197 | 1.4331 | 6.35 | 1.3780" | 1.5469" |