Inconel 718 Socket Set Screws to ASME B18.3.1.M Metric Socket Head Cap Screws
ASME B18.3.1M Metric Socket Head Cap Screws Dimensions
| Nominal Size and Thread Pitch | D | A | H | S | J | M | T | G | B | E | F | K | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Underhead Fillet | ||||||||||||||||
| Body Diameter | Head Diameter | Head Height | Cham fer or Radius |
Hexagon Socket Size |
Spline Socket Size |
Key Engage ment |
Wall Thick-ness |
Transition Diameter | Transi tion Length |
Junc ture Radius |
Charm- far or Radius |
|||||
| Max | Min | Max | Min | Max | Min | Max | Nom. | Nom. | Min. | Min. | Max. | Min. | Max. | Min. | Max. | |
| M1.6 x 0.35 | 1.60 | 1.46 | 3.00 | 2.87 | 1.60 | 1.52 | 0.16 | 1.5 | 1.829 | 0.80 | 0.54 | 2.0 | 1.8 | 0.34 | 0.10 | 0.08 |
| M2 0.4 | 2.00 | 1.86 | 3.80 | 3.65 | 2.00 | 1.91 | 0.20 | 1.5 | 1.829 | 1.00 | 0.68 | 2.6 | 2.2 | 0.51 | 0.10 | 0.08 |
| M2.5 x 0.45 | 2.50 | 2.36 | 4.50 | 4.33 | 2.50 | 2.40 | 0.25 | 2.0 | 2.438 | 1.25 | 0.85 | 3.1 | 2.7 | 0.51 | 0.10 | 0.08 |
| M3 x 0.5 | 3.00 | 2.86 | 5.50 | 5.32 | 3.00 | 2.89 | 0.30 | 2.5 | 2.819 | 1.50 | 1.02 | 3.6 | 3.2 | 0.51 | 0.10 | 0.13 |
| M4 x 0.7 | 4.00 | 3.82 | 7.00 | 6.80 | 4.00 | 3.88 | 0.40 | 3.0 | 3.378 | 2.00 | 1.52 | 4.7 | 4.4 | 0.60 | 0.20 | 0.13 |
| M5 x 0.8 | 5.00 | 4.82 | 8.50 | 8.27 | 5.00 | 4.86 | 0.50 | 4.0 | 4.648 | 2.50 | 1.90 | 5.7 | 5.4 | 0.60 | 0.20 | 0.13 |
| M6 x 1 | 6.00 | 5.82 | 10.00 | 9.74 | 6.00 | 5.85 | 0.60 | 5.0 | 5.486 | 3.00 | 2.28 | 6.8 | 6.5 | 0.68 | 0.25 | 0.20 |
| M8 x 1.25 | 8.00 | 7.78 | 13.00 | 12.70 | 8.00 | 7.83 | 0.80 | 6.0 | 7.391 | 4.00 | 3.20 | 9.2 | 8.8 | 1.02 | 0.40 | 0.20 |
| M10 x 1.5 | 10.00 | 9.78 | 16.00 | 15.67 | 10.00 | 9.81 | 1.00 | 8.0 | -- | 5.00 | 4.00 | 11.2 | 10.8 | 1.02 | 0.40 | 0.20 |
| M12 x 1.75 | 12.00 | 11.73 | 18.00 | 17.63 | 12.00 | 11.79 | 1.20 | 10.0 | -- | 6.00 | 4.80 | 14.2 | 13.2 | 1.87 | 0.60 | 0.25 |
| M14 x 2(1) | 14.00 | 13.73 | 21.00 | 20.60 | 14.00 | 13.77 | 1.40 | 12.0 | -- | 7.00 | 5.60 | 16.2 | 15.2 | 1.87 | 0.60 | 0.25 |
| M16 x 2 | 16.00 | 15.73 | 24.00 | 23.58 | 16.00 | 15.76 | 1.60 | 14.0 | -- | 8.00 | 6.40 | 18.2 | 17.2 | 1.87 | 0.60 | 0.25 |
| M20 x 2.5 | 20.00 | 19.67 | 30.00 | 29.53 | 20.00 | 19.73 | 2.00 | 17.0 | -- | 10.00 | 8.00 | 22.4 | 21.6 | 2.04 | 0.80 | 0.40 |
| M24 x 3 | 24.00 | 23.67 | 36.00 | 35.48 | 24.00 | 23.70 | 2.40 | 19.0 | -- | 12.00 | 9.60 | 26.4 | 25.6 | 2.04 | 0.80 | 0.40 |
| M30 x 3.5 | 30.00 | 29.67 | 45.00 | 44.42 | 30.00 | 29.67 | 3.00 | 22.0 | -- | 15.00 | 12.00 | 33.4 | 32.0 | 2.89 | 1.00 | 0.40 |
| M36 x 4 | 36.00 | 35.61 | 54.00 | 43.37 | 36.00 | 35.64 | 3.60 | 27.0 | -- | 18.00 | 14.40 | 39.4 | 38.0 | 2.89 | 1.00 | 0.40 |
| M42 x 4.5 | 42.00 | 41.61 | 63.00 | 62.31 | 42.00 | 41.61 | 4.20 | 32.0 | -- | 21.00 | 16.80 | 45.6 | 44.4 | 3.06 | 1.20 | 0.40 |
| M48 x 5 | 48.00 | 47.61 | 72.00 | 71.27 | 48.00 | 47.58 | 4.80 | 36.0 | -- | 24.00 | 19.20 | 52.6 | 51.2 | 3.91 | 1.60 | 0.40 |
| See para. | 2.4.2 | 2.1.1 | 2.1.2 | 2.2.2 | 2.2.2 | 2.2.3 | 2.2.3 | 2.1.6 | 2.1.3 | |||||||
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Note:
- The 14 x 2 mm size is not recommended for use in new designs.
| Nominal Hexagon Socket Size | J | C | |
|---|---|---|---|
| Socket Width Across Flats | Socket Width Across Corners | ||
| Max. | Min. | Min. | |
| 1.5 | 1.545 | 1.520 | 1.73 |
| 2 | 2.045 | 2.020 | 2.30 |
| 2.5 | 2.560 | 2.520 | 2.87 |
| 3 | 3.071 | 3.020 | 3.44 |
| 4 | 4.084 | 4.020 | 4.58 |
| 5 | 5.084 | 5.020 | 5.72 |
| 6 | 6.095 | 6.020 | 6.86 |
| 8 | 8.115 | 8.025 | 9.15 |
| 10 | 10.127 | 10.025 | 11.50 |
| 12 | 12.146 | 12.032 | 13.80 |
| 14 | 14.159 | 14.032 | 16.09 |
| 17 | 17.216 | 17.050 | 19.56 |
| 19 | 19.243 | 19.065 | 21.87 |
| 22 | 22.319 | 22.065 | 25.31 |
| 24 | 24.319 | 24.065 | 27.60 |
| 27 | 27.319 | 27.065 | 31.04 |
| 32 | 32.461 | 32.080 | 36.80 |
| 36 | 36.461 | 36.080 | 41.38 |