Related Specifications
Surface Treatments
Certifications
- ISO 9001 - 2015 Certified
- PED 2014/68/EC
- NACE MR0175/ISO 15156-2
- NORSOK M-650
- DFAR
- MERKBLATT AD 2000 W2/W7/W10
B18.31.1M Metric Double End Stud Bolts Dimensions
Metric standard for continuous thread double end studs used in structural and piping systems
B18.31.1M Metric Double End Stud Bolts Dimension Standard provide precise metric thread specifications and tolerances required for international engineering applications and heavy-duty fastening systems.
ASME B18.31.1M Metric Double End Stud Bolts Dimensions
| Nominal Size Diameter, D | Pitch, P | Umax = 2P | Nominal Length, LT | |
|---|---|---|---|---|
| Range | Increments | |||
| M5 | 0.8 | 1.6 | 12 - 20 | 4 |
| 25 - 50 | 5 | |||
| 60 - 160 | 10 | |||
| ≥ 180 | 20 | |||
| M6 | 1 | 2.0 | 16 - 20 | 4 |
| 25 - 50 | 5 | |||
| 60 - 160 | 10 | |||
| ≥ 180 | 20 | |||
| M8 | 1.25 | 2.5 | 25 - 50 | 5 |
| 60 - 160 | 10 | |||
| ≥ 180 | 20 | |||
| M10 | 1.5 | 3.0 | 30 - 50 | 5 |
| 60 - 160 | 10 | |||
| > 180 | 20 | |||
| M12 | 1.75 | 3.5 | 40 - 50 | 5 |
| 60 - 160 | 10 | |||
| ≥ 180 | 20 | |||
| M14 | 2 | 4.0 | 60 - 160 | 10 |
| ≥ 180 | 20 | |||
| M16 | 2 | 4.0 | 60 - 160 | 10 |
| ≥ 180 | 20 | |||
| M20 | 2.5 | 5.0 | 60 - 160 | 10 |
| ≥ 180 | 20 | |||
| M22 | 2.5 | 5.0 | 60 - 160 | 10 |
| ≥ 180 | 20 | |||
| M24 | 3 | 6.0 | 70 - 160 | 10 |
| ≥ 180 | 20 | |||
| M27 | 3 | 6.0 | 80 - 160 | 10 |
| ≥ 180 | 20 | |||
| M30 | 3.5 | 7.0 | 90 - 160 | 10 |
| ≥ 180 | 20 | |||
| M36 | 4 | 8.0 | 110 - 160 | 10 |
| ≥ 180 | 20 | |||
| M42 | 4.5 | 9.0 | 120 - 160 | 10 |
| ≥ 180 | 20 | |||
| M48 | 5 | 10.0 | 150 - 160 | 10 |
| ≥ 180 | 20 | |||
| M56 | 5.5 | 11.0 | ≥ 180 | 20 |
| M64 | 6 | 12.0 | ≥ 180 | 20 |
| M72 | 6 | 12 | ≥ 200 | 20 |
| M80 | 6 | 12 | ≥ 200 | 20 |
| M90 | 6 | 12 | ≥ 200 | 20 |
| M100 | 6 | 12 | ≥ 200 | 20 |
ASME B18.31.1M Metric Double End Stud Bolts Length Tolerance (mm)
| Nominal Length | Tolerance | |
|---|---|---|
| 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 |
Satisfaction Survey
