| Specifications | Bolt | Nut | Washer | |||||||||
| D | J | S | H | h | a | e | D | G | d1 | d | t | |
| M16 | 16 | 45 | 40 | 10 | 20 | 11 | 28 | 16 | 40 | 32 | 17.5 | 2.5 |
| M20 | 20 | 45 | 40 | 12 | 20 | 11 | 32 | 20 | 36 | 46 | 22 | 2.5 |
| Material | Q235 hot dip galvanizing, Q235Hot-galv, 1C13(2Cr13)1C18Ni9Ti 0Cr17Ni12MO |
1C13(2Cr13)1C18Ni9Ti 0Cr17Ni12MO | Q235 galvanization, Q235Hot-galv |
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