China Suppliers Factory Galvanized Hexagonal Flange Nut 4.8 8.8 Grade 12.9 Thickened Flange Nut for Mechanical Equipment
| 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 | |
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
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.
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1Additional Support & 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.
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2Prevent Loosening & 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.
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3Shock Absorption & 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.