Bolt
Hexagon head bolt, spring washer and plain washer assemblies
| Thread size
d |
M3 | M4 | M5 | M6 | M8 | M10 | M12 | |
| h ② | Public | 0.5 | 0.8 | 1 | 1.6 | 1.6 | 2.0 | 2.5 |
| H | Public | 2 | 2.75 | 3.25 | 4 | 5 | 6.25 | 7.5 |
| dc | Public | 7 | 9 | 10 | 12 | 16 | 20 | 24 |
| d2 | Reference | 5.23 | 6.78 | 8.75 | 10.71 | 13.64 | 16.59 | 19.53 |
| a | Max | 1.0 | 1.4 | 1.6 | 2.0 | 2.5 | 3.0 | 3.5 |
| 1,000 pieces of steel weigh ≈ kg | - | - | - | - | - | - | - | |
| 1, other size reference
bolts: GB 5783; washers: GB 9074.24, GB 9074.26
2, M8, M10, M12 H values and GB 9074.24-88 corresponding values are not consistent |
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The use of the hexagonal screw with flat cushion cushion cushion combination screw mainly includes
1. buffering effect: in the process of mechanical operation, due to vibration, impact or temperature changes and other reasons, the cushioning effect of the elastic pad and the flat pad can effectively reduce the problems of the loose screw or the deformation of the connecting parts, etc. , thus increasing the reliability of the connection
2. locking action: the bolt-spring pad and the flat pad can lock the position of the connecting part, keep it in the correct position, and prevent the movement due to the external force, to ensure the tightness and stability of the connection
3. to reduce the connection component damage: the connection component in the bearing screw connection often produce stress, the bolt plus elastic pad and flat pad can bear these stresses, lighten the load of the connecting parts, thus avoiding the damage of the connecting parts
4. wide application fields: outside hexagon head screw elastic pad application fields are very wide, not only can be used in construction, automotive, mechanical, electronic, electrical and other industries, in daily life, we can also see their use in the assembly of furniture, electrical goods and other applications
5. in specific applications: hexagon head combination bolts for important assembly accuracy requirements of high and withstand the occasion of a larger impact force. For example, in the automobile manufacturing process, hexagonal head bolt flat pad combination is widely used for body and engine installation. In the manufacturing and maintenance of mechanical equipment, often used for connecting mechanical parts and components. In construction, used to connect steel structures
Hexagon screw with flat cushion cushion is a kind of multi-functional mechanical parts, which is mainly used to provide stable connection and buffer, and is widely used in various industrial and civil fields.
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