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| Nominal Screw Diameter, D and Thread Pitch | Body Diameter Ds, | Width Across Flats, S | Width Across Corners, E | Flange Diameter, Dc | Bearing Circle Dia, Dw | Flange Edge Thickness, C | Head Height, K | Wrenching Height, K1 | Fillet Radius, R | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max | Min | Max | Min | Max | Min | Max | Min | Min | Max | Min | Max | |
| M10 x 1.5 | 10.00 | 9.78 | 15.00 | 14.57 | 17.32 | 16.32 | 22.3 | 19.6 | 1.5 | 8.6 | 3.70 | 0.6 |
| M12 x 1.75 | 12.00 | 11.73 | 18.00 | 17.57 | 20.78 | 19.68 | 26.6 | 23.8 | 1.8 | 10.4 | 4.60 | 0.7 |
| M14 x 2 | 14.00 | 13.73 | 21.00 | 20.48 | 24.25 | 22.94 | 30.5 | 27.6 | 2.1 | 12.4 | 5.50 | 0.9 |
| M16 x 2 | 16.00 | 15.73 | 24.00 | 23.16 | 27.71 | 25.94 | 35.0 | 31.9 | 2.4 | 14.1 | 6.20 | 1.0 |
| M20 x 2.5 | 20.00 | 19.67 | 30.00 | 29.16 | 34.64 | 32.66 | 43.0 | 39.9 | 3.0 | 17.7 | 7.90 | 1.2 |
All dimensions are in millimeters. Basic thread lengths, B, are given in table 12 of ASME B18.2.3.9M-1984. Transition thread length x, includes the length of incomplete threads and tolerances on grip gaging length and body length. It is intended for calculation purposes. For additional manufacturing and acceptance specification, reference should be made to ASME B18.2.3.9M-1984 standard.