BS 4882
ASTM A193 Grade B7 Specifications
ASTM A193 Grade B7 Specifications
| Nominal Size | Minimum Thread Length, B min | Nominal Length, LT | |||||
|---|---|---|---|---|---|---|---|
| Diameter, D | Pitch, P | L T ≤ 250 | 250 < L T ≤ 400 | L T > 400 | U max = 2P | Range | Increments |
| M6 | 1 | 18 | 24 | ... | 2 | 50-90 | 5 |
| 100-160 | 10 | ||||||
| M8 | 1.25 | 18 | 24 | ... | 2.5 | 50-90 | 5 |
| 100-160 | 10 | ||||||
| ≥ 180 | 20 | ||||||
| M10 | 1.5 | 26 | 32 | 45 | 3 | 60-160 | 10 |
| ≥ 180 | 20 | ||||||
| M12 | 1.75 | 30 | 36 | 49 | 3.5 | 60-160 | 10 |
| ≥ 180 | 20 | ||||||
| M14 | 2 | 34 | 40 | 53 | 4 | 80-160 | 10 |
| ≥ 180 | 20 | ||||||
| M16 | 2 | 38 | 44 | 57 | 4 | 90-160 | 10 |
| ≥ 180 | 20 | ||||||
| M20 | 2.5 | 46 | 52 | 65 | 5 | 100-160 | 10 |
| ≥ 180 | 20 | ||||||
| M24 | 3 | 54 | 60 | 73 | 6 | 130-160 | 10 |
| ≥ 180 | 20 | ||||||
| M30 | 3.5 | 66 | 72 | 85 | 7 | 150-160 | 10 |
| ≥ 180 | 20 | ||||||
| M36 | 4 | 78 | 84 | 97 | 8 | ≥ 200 | 20 |
| M42 | 4.5 | 90 | 96 | 109 | 9 | ≥ 240 | 20 |
| M48 | 5 | ... | 108 | 121 | 10 | ≥ 280 | 20 |
| M56 | 5.5 | ... | 124 | 137 | 11 | ≥ 300 | 20 |
| M64 | 6 | ... | 140 | 153 | 12 | ≥ 340 | 20 |
| M72 | 6 | ... | 156 | 169 | 12 | ≥ 380 | 20 |
| M80 | 6 | ... | 172 | 185 | 12 | ≥ 400 | 20 |
| M90 | 6 | ... | ... | 205 | 12 | ≥ 440 | 20 |
| M100 | 6 | ... | ... | 225 | 12 | ≥ 480 | 20 |
General Note :All dimensions are in millimeters unless otherwise indicated
| Nominal Size | Body Diameter, Dg for Reduced-Body Studs | Body Diameter, Ds for Full-Body Studs | |||||
|---|---|---|---|---|---|---|---|
| Maximum Overall Length, LT | Minimum | Maximum | Minimum Overall Length, LT | ||||
| Diameter, D | Pitch, P | ≤ 150 | > 150 | ≤ 150 | > 150 | ||
| M6 | 1 | 5.39 | 5.51 | 5.21 | 6.00 | 5.82 | 5.70 |
| M8 | 1.25 | 7.26 | 7.40 | 7.04 | 8.00 | 7.78 | 7.64 |
| M10 | 1.5 | 9.08 | 9.22 | 8.86 | 10.00 | 9.78 | 9.64 |
| M12 | 1.75 | 10.95 | 11.11 | 10.68 | 12.00 | 11.73 | 11.57 |
| M14 | 2 | 12.77 | 12.93 | 12.50 | 14.00 | 13.73 | 13.57 |
| M16 | 2 | 14.77 | 14.93 | 14.50 | 16.00 | 15.73 | 15.57 |
| M20 | 2.5 | 18.49 | 18.68 | 18.16 | 20.00 | 19.67 | 19.48 |
| M24 | 3 | 22.13 | 22.32 | 21.80 | 24.00 | 23.67 | 23.48 |
| M30 | 3.5 | ... | 27.98 | 27.46 | 30.00 | ... | 29.48 |
| M36 | 4 | ... | 33.74 | 33.12 | 36.00 | ... | 35.38 |
| M42 | 4.5 | ... | 39.40 | 38.78 | 42.00 | ... | 41.38 |
| M48 | 5 | ... | 45.05 | 44.43 | 48.00 | ... | 47.38 |
| M56 | 5.5 | ... | 52.83 | 52.09 | 56.00 | ... | 55.26 |
| M64 | 6 | ... | 60.48 | 59.74 | 64.00 | ... | 63.26 |
| M72 | 6 | ... | 68.48 | 67.74 | 72.00 | ... | 71.26 |
| M80 | 6 | ... | 76.48 | 75.74 | 80.00 | ... | 79.26 |
| M90 | 6 | ... | 86.61 | 85.74 | 90.00 | ... | 89.13 |
| M100 | 6 | ... | 96.59 | 95.72 | 100.00 | ... | 99.13 |
| Nominal Size | Length Tolerance(mm) | |
|---|---|---|
| Over | Through | |
| 6 | 10 | ± 0.45 |
| 10 | 18 | ± 0.55 |
| 18 | 30 | ± 0.65 |
| 30 | 50 | ± 0.80 |
| 50 | 80 | ± 1.50 |
| 80 | 120 | ± 1.75 |
| 120 | 180 | ± 2.00 |
| 180 | 250 | ± 2.30 |
| 250 | 315 | ± 2.60 |
| 315 | 400 | ± 2.85 |
| 400 | 500 | ± 3.15 |
| > 500 | ... | ± 10.00 |
