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China Factory Suppliers Galvanized Hexagonal Flange Nut Grade 12.9 Thickened for Easy Maintenance
Thread Specifications & Dimensional Data
| 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.
Key Features & Applications
1
Additional Support & Protection
Flange nuts are integrated with washers and nuts. Their wide flange design increases the contact area with the workpiece surface, providing better support and protecting the connecting components. This structure makes it more sturdy and delivers greater tensile strength than a regular combination of hexagonal nuts and washers.
2
Prevent Loosening & Improve Sealing
The anti-slip teeth and serrated protrusions under the flange nut evenly distribute the pressure of the nut on the fixed component, creating a locking effect to prevent loosening. At the same time, they improve the sealing of the connection, effectively preventing gas or liquid leakage.
3
Shock 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.
Frequently Asked Questions
Q
What is a DIN 6923 hexagon flange nut?
A DIN 6923 hexagon flange nut is a type of fastener that combines a standard hexagonal nut with an integrated wide circular flange at its base. The flange acts like a built-in washer, increasing the bearing surface area and distributing the clamping load more evenly across the workpiece.
Q
What materials are DIN 6923 flange nuts available in?
DIN 6923 flange nuts are available in steel (strength grades 8, 10, and 12 per DIN ISO 898-2 and DIN 267-23), stainless steel (A2-70 per DIN 267-11), and other materials or grades as chosen by the manufacturer.
Q
What thread sizes are available for DIN 6923 flange nuts?
DIN 6923 flange nuts are available in metric thread sizes ranging from M5 to M20, including M5, M6, M8, M10, M12, M14, M16, and M20. Both coarse and fine thread options are available for several sizes.
Q
How do flange nuts prevent loosening?
The serrated or anti-slip teeth located on the underside of the flange create a locking effect by biting into the surface of the workpiece. This evenly distributes clamping pressure and significantly resists loosening caused by vibration or dynamic loads during equipment operation.
Q
In which industries are DIN 6923 flange nuts commonly used?
DIN 6923 flange nuts are widely used across industrial sectors, particularly in mechanical equipment including compressors, pumps, air conditioning systems, and fans. They are valued wherever a secure, vibration-resistant, and leak-proof fastening solution is required.
Q
What is the advantage of a flange nut over a standard hex nut with a washer?
A flange nut eliminates the need for a separate washer, reducing assembly time and the number of components. Its integrated flange provides a larger contact area, greater tensile strength, improved sealing, and better vibration resistance compared to a standard hexagonal nut and washer combination.