Hexagon head bolt GOST-7798-70 accuracy class B, version 4
Bolts GOST 7798-70 are used in construction, mechanical engineering, industrial and manufacturing industries. Also suitable for installation of equipment and structures in conjunction with anchor sleeves and drive-in anchors. Bolts GOST–7798–70 are one of the most versatile types of fasteners. They are made of galvanized and hot dip galvanized steel. The part has a hexagonal head, with a shape according to GOST, version 4, in the form of a half-empty base of the head and belongs to the B-accuracy class. The diameter of the thread on the cylindrical rod can be 6 - 48 mm. The total length of the fastener is a maximum of 300 mm.GOST-7798-70 bolts are used during fastening of rigid metal structures in mechanical engineering, instrument making, for connecting flanged pipeline structures. Installation of hardware is carried out using a nozzle for a hex head or a wrench.
Characteristics
Diameter | Thread Pitch | Head Height | Wrench Size | |
---|---|---|---|---|
large | small | |||
М4 | 0,7 | - | 2,8 | 7 |
М5 | 0,8 | - | 3,5 | 8 |
М6 | 1 | - | 4 | 10 |
М8 | 1,25 | 1 | 5,3 | 13 |
Complies with GOST 7805-70, ISO 4017, DIN 933.
GOST documentation