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Designed for tool-free applications, stainless steel butterfly wing bolts can endure up to 500 hours of salt spray testing, making them suitable for outdoor and marine settings.
These bolts are perfect for frequent adjustments in challenging environments, providing a reliable, reusable fastening solution with a secure grip.
| Name | Wing 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-M50 | Surface finish | ZPHDGBLACKDacromet etc. |
| Length | 15-500 | Samples | Available |
| thread size | M4 | M5 | M6 | M8 | M10 | M12 | M16 | M20 | M24 | |
| d | ||||||||||
| P | pitch | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2.5 | 3 |
| dk | maximum value | 8 | 11 | 13 | 16 | 20 | twenty three | 29 | 35 | 44 |
| minimum | 6 | 8 | 10 | 13 | 17 | 20 | 26 | 32 | 41 | |
| d 3 | maximum value | 7 | 9 | 11 | 12.5 | 16.5 | 19.5 | twenty three | 29 | 37.5 |
| minimum | 5.5 | 7.5 | 9 | 10.5 | 14.5 | 17.5 | twenty one | 27 | 35 | |
| n | maximum value | 20 | 26 | 33 | 39 | 51 | 65 | 73 | 90 | 110 |
| minimum | 18 | twenty four | 30 | 36 | 48 | 62 | 70 | 86 | 106 | |
| h 1 | maximum value | 1.9 | 2.3 | 2.3 | 2.8 | 4.4 | 4.9 | 6.4 | 6.9 | 9.4 |
| minimum | 1.1 | 1.5 | 1.5 | 2 | 3.6 | 4.1 | 5.6 | 6.1 | 8.6 | |
| h 2 | maximum value | 2.3 | 2.8 | 3.3 | 4.4 | 5.4 | 6.4 | 7.5 | 8 | 10.5 |
| minimum | 1.7 | 2.3 | 2.7 | 3.6 | 4.6 | 5.6 | 6.5 | 7 | 9.5 | |
| H | maximum value | 10.5 | 13 | 17 | 20 | 25 | 33.5 | 37.5 | 46.5 | 56.5 |
| minimum | 8.5 | 11 | 15 | 18 | twenty three | 31 | 35 | 44 | 53.5 | |
| k | maximum value | 4.6 | 6.5 | 8 | 10 | 12 | 14 | 17 | twenty one | 25 |
| minimum | 3.2 | 4 | 5 | 6.5 | 8 | 10 | 13 | 16 | 20 | |
Our stainless steel butterfly wing bolts provide up to 30% higher resistance to rust than zinc-plated alternatives, ensuring longevity in wet or humid conditions. Built for strength and durability, these bolts are ideal for environments where tool-free fastening is essential.
Tested to meet industrial standards, each bolt offers ease of installation and reliable stability. Trust Befast’s stainless steel wing bolts for secure, flexible fastening in demanding applications.
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