Technical Specifications
| 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 |
Material & Grade
A
Steel Strength Strength grade: 8, 10, 12 (DIN ISO 898-2, DIN 267-23)
B
Stainless Steel Strength grade: A2-70 (DIN 267-11)
C
Custom Options Other materials or grades 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.
Key Benefits & Features
1
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
What is a DIN 6923 Hexagon Flange Nut?
A DIN 6923 flange nut is a hexagonal nut with a wide circular flange at one end that acts as an integrated, non-spinning washer.
Does a flange nut require a separate washer?
No, the design of the flange nut includes a built-in flange that serves the purpose of a washer by distributing pressure over a wider surface area.
What are the main advantages of serrated flange nuts?
The serrations grip the surface of the material being fastened, providing excellent resistance to loosening caused by vibration.
In which industries are flange nuts commonly used?
They are widely used in automotive, manufacturing, plumbing, and HVAC systems, particularly in pumps, compressors, and fans.
Are these nuts available in stainless steel?
Yes, they are commonly manufactured in various grades of steel (Grade 8, 10, 12) and stainless steel (A2-70) to suit different environmental conditions.
How does the flange improve sealing?
The wide flange covers oversized or irregularly shaped holes and provides an even distribution of clamping force, which helps prevent leakage in fluid-related applications.
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