High strength bolted connections as per attached file

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Tower crane high strength connecting bolts with nuts and washer, as per attached file

Stud bolt
- M45 x 4.5p x 430
- 12.9 (ISO 898-1 spec.)
- Surface hardness: HV 372 ~ 434
- 1,500 pcs.

Hex bolt
- M45 x 4.5p x 440
- 12.9 (ISO 898-1 spec.)
- Surface hardness: HV 372 ~ 434
- 1,500 pcs.

Hex nut
- M45 X 4.5p (DIN 934-ISO 12 Spec.)
- 12
- Surface hardness: HV 272 ~ 353
- 1,500 pcs.

Plain washer
- D85 x d46 x t7
- Surface hardness: HV 295 ~ 350
- 1,500 pcs.