China Suppliers Factory Galvanized Hexagonal Flange Nut 4.8 8.8 Grade 12.9 Thickened for Easy Maintenance
| Thread specifications D |
M5 | M6 | M8 | M10 | M12 | M14 | M16 | M20 | ||
| P | Pitch | Coarse teeth | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 |
| Fine Teeth 1 | / | / | 1 | 1.25 | 1.5 | 1.5 | 1.5 | 1.5 | ||
| Fine Teeth 2 | / | / | / | -1 | -1.25 | / | / | / | ||
| c | Min | 1 | 1.1 | 1.2 | 1.5 | 1.8 | 2.1 | 2.4 | 3 | |
| Min | Min | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 20 | |
| Max | 5.75 | 6.75 | 8.75 | 10.8 | 13 | 15.1 | 17.3 | 21.6 | ||
| dc | Max | 11.8 | 14.2 | 17.9 | 21.8 | 26 | 29.9 | 34.5 | 42.8 | |
| dw | Min | 9.8 | 12.2 | 15.8 | 19.6 | 23.8 | 27.6 | 31.9 | 39.9 | |
| e | Min | 8.79 | 11.05 | 14.38 | 16.64 | 20.03 | 23.36 | 26.75 | 32.95 | |
| m | Max | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 20 | |
| Min | 4.7 | 5.7 | 7.6 | 9.6 | 11.6 | 13.3 | 15.3 | 18.9 | ||
| mw | Min | 2.2 | 3.1 | 4.5 | 5.5 | 6.7 | 7.8 | 9 | 11.1 | |
| s | Maximum = nominal | 8 | 10 | 13 | 15 | 18 | 21 | 24 | 30 | |
| Min | 7.78 | 9.78 | 12.73 | 14.73 | 17.73 | 20.67 | 23.67 | 29.67 | ||
| r | Max | 0.3 | 0.36 | 0.48 | 0.6 | 0.72 | 0.88 | 0.96 | 1.2 | |
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1, material: a) steel, strength grade (material) : 8,10,12 DIN ISO 898-2, DIN 267-23(current draft) b) stainless steel, strength grade (material) : A2-70 Din 267-11 c) other material or grade chosen by the manufacturer |
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Flange nuts have a wide range of applications in the industrial field, especially in mechanical equipment such as compressors, pumps, air conditioners, and fans, playing a crucial role
1. Provide additional support and protection
Due to the fact that flange nuts are integrated with washers and nuts, their wide flange design can increase the contact area with the workpiece surface, providing better support and protecting the connecting components. This structure makes it more sturdy and has greater tensile strength than a regular combination of hexagonal nuts and washers.
2. Prevent loosening and improve sealing
The anti slip teeth and serrated protrusions under the flange nut can evenly distribute the pressure of the nut on the fixed component, creating a locking effect to prevent loosening. At the same time, they can also improve the sealing of the connection, effectively preventing gas or liquid leakage.
3. Shock absorption and noise reduction
Good flange nuts can to some extent reduce the vibration and noise generated by equipment operation, thereby improving the stability and operational efficiency of the equipment.
Frequently Asked Questions
Flange nuts are widely used in mechanical equipment such as compressors, pumps, air conditioners, and fans to ensure secure connections under operational stress.
Their integrated wide flange design increases the contact surface area, which distributes pressure more evenly, provides better support, and protects the underlying workpiece from damage.
The anti-slip teeth and serrated protrusions on the underside of the flange create a locking mechanism that grips the surface, preventing the nut from backing off.
They are typically manufactured from steel (strength grades 8, 10, 12 per DIN ISO 898-2) and stainless steel (grade A2-70), though other materials can be specified by the manufacturer.
Yes, high-quality flange nuts help absorb shock and reduce vibration, which directly lowers the operational noise of connected machinery.