DIN 6921 Hexagon Flange Bolt
Standard:DIN 6921
Material:Carbon steel/Stainless steel
Type:Flange External Hex bolt
Products Description
DIN 6921 Hexagon Flange Bolt
DIN 6921 Hexagon Flange Bolt is named because its head is hexagonal and there is a flange at the bottom.
The presence of flange not only increases the pressure-bearing area of the bolt, but also plays an anti-slip role, making bolt more stable and reliable when tightening.
Products Parameters
|
Thread Spec. d |
M5 |
M6 |
M8 | |
|
b |
L<120 | 16 | 18 | 22 |
| 120<L<200 | / | / | 28 | |
| dc | MAX | 11.8 | 14.2 | 18 |
| k | MAX | 5.4 | 6.6 | 8.1 |
| s | MAX | 8 | 10 | 13 |
| MIN | 7.64 | 9.64 | 12.57 | |
| ds | MAX | 5 | 6 | 8 |
| MIN | 4.82 | 5.82 | 7.78 | |
Unit:mm
Products stucture
about our products
Head:
regular hexagonal, convenient to use wrench and other tools to tighten or loosen the operation, head concave with threads, for tightening with nuts or other connections.
Screw:
cylindrical, usually made of carbon steel, with high strength and hardness, surface with external thread, and inner thread of nut to cooperate, to achieve connection function.
Flange surface:
with an extended flange surface under bolt head, similar to internal washer design, which can increase force area, effectively disperse pressure, and provide additional stability.
Strength levels:
performance level of the bolts is also an important parameter, including 4.8,8.8,10.9 and 12.9 grades. These grades reflect the tensile strength and yield strength of bolts.
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