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Befast’s A2-70 and A4-80 stainless steel stud bolts offer high corrosion resistance and strength, suitable for marine and industrial applications.
These bolts are designed to provide stability and ensure long-term, reliable fastening in demanding environments, delivering a secure solution for critical applications.
| Name | DIN938 Stud Bolts | Materials | Carbon Steel/Stainless Steel |
| Standards | DIN ISO ANC BSW JIS etc. | Strength level | 4.8 8.8 10.9 12.9 A2-70 A4-70 A4-80 |
| Size | M3-M52 | Surface finish | ZPHDGBLACKDacromet etc. |
| Length | 20-3000 | Samples | Available |
| Thread specification | M3 | M4 | M5 | M6 | (M7) | M8 | M10 | M12 | (M14) | M16 | (M18) | M20 | ||||
| d | ||||||||||||||||
| P | pitch | coarse teeth | 0.5 | 0.7 | 0.8 | 1 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 | 2.5 | ||
| fine teeth 1 | - | - | - | - | - | 1 | 1.25 | 1.25 | 1.5 | 1.5 | 1.5 | 1.5 | ||||
| fine teeth 2 | - | - | - | - | - | - | - | 1.5 | - | - | - | - | ||||
| b 1 | 3 | 4 | 5 | 6 | 7 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | ||||
| b | L≤125 | 12 | 14 | 16 | 18 | 20 | twenty two | 26 | 30 | 34 | 38 | 42 | 46 | |||
| 125＜L≤200 | 18 | 20 | twenty two | twenty four | 26 | 28 | 32 | 36 | 40 | 44 | 48 | 52 | ||||
| L＞200 | - | - | - | - | - | - | 45 | 49 | 53 | 57 | 61 | 65 | ||||
| x 1 | 1.25 | 1.75 | 2 | 2.5 | 2.5 | 3.2 | 3.8 | 4.3 | 5 | 5 | 6.3 | 6.3 | ||||
| x 2 | 0.7 | 0.9 | 1 | 1.25 | 1.25 | 1.6 | 1.9 | 2.2 | 2.5 | 2.5 | 3.2 | 3.2 | ||||
| Thousand pieces of steel weight ≈kg | - | - | - | - | - | - | - | - | - | - | - | - | ||||
| Thread specification | (M22) | M24 | (M27) | M30 | (M33) | M36 | (M39) | M42 | (M45) | M48 | (M52) | ||||
| d | |||||||||||||||
| P | pitch | coarse teeth | 2.5 | 3 | 3 | 3.5 | 3.5 | 4 | 4 | 4.5 | 4.5 | 5 | 5 | ||
| fine teeth 1 | 1.5 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | ||||
| fine teeth 2 | - | - | - | - | - | - | - | - | - | - | - | ||||
| b 1 | twenty two | twenty four | 25 | 30 | 32 | 35 | 38 | 42 | 45 | 48 | 52 | ||||
| b | L≤125 | 50 | 54 | 60 | 66 | 72 | 78 | 84 | 90 | 96 | 102 | 110 | |||
| 125＜L≤200 | 56 | 60 | 66 | 72 | 78 | 84 | 90 | 96 | 102 | 108 | 116 | ||||
| L＞200 | 69 | 73 | 79 | 85 | 91 | 97 | 103 | 109 | 115 | 121 | 129 | ||||
| x 1 | 6.3 | 7.5 | 7.5 | 9 | 9 | 10 | 10 | 11 | 11 | 12.5 | 12.5 | ||||
| x 2 | 3.2 | 3.8 | 3.8 | 4.5 | 4.5 | 5 | 5 | 5.5 | 5.5 | 6.3 | 6.3 | ||||
| Thousand pieces of steel weight ≈kg | - | - | - | - | - | - | - | - | - | - | - | ||||
Befast’s A2-70 and A4-80 stainless steel stud bolts offer unmatched corrosion resistance and strength, suitable for critical marine and industrial applications.
Engineered to withstand demanding environments, these bolts deliver reliable fastening and ensure long-term stability, making them a preferred choice for secure assemblies.
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