Cup Head Square Neck Bolts
Product standard
GB/T12；DIN603；ISO8677
Product level
Stainless steel A2-70; carbon steel grade 4.8, grade 8.8
Surface treatment
Passivation, blackening, galvanized, dacromet-plated, hot-dip galvanized
Product specifications
| Products Specification | M6 | M8 | M10 | M12 | M14 | M16 | M20 | |
| dk | max | 13.1 | 17.1 | 21.3 | 25.3 | 29.3 | 33.6 | 41.6 |
| min | 11.3 | 15.3 | 19.16 | 23.16 | 27.16 | 31 | 39 | |
| k1 | max | 4.4 | 5.4 | 6.4 | 8.45 | 9.45 | 10.45 | 12.55 |
| min | 3.6 | 4.6 | 5.6 | 7.55 | 8.55 | 9.55 | 11.45 | |
| k | max | 4.08 | 5.28 | 6.48 | 8.9 | 9.9 | 10.9 | 13.1 |
| min | 3.2 | 4.4 | 5.6 | 7.55 | 8.55 | 9.55 | 11.45 | |
| s | max | 6.3 | 8.36 | 10.36 | 12.43 | 14.43 | 16.43 | 20.52 |
| min | 5.84 | 7.8 | 9.8 | 11.76 | 13.76 | 15.76 | 19.22 | |
| l | 10mm~60mm | |||||||
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