DIN 6923 Hexagon Flange Nut (Serrated)
FLOK supplies hexagon flange nuts DIN 6923, M3–M20, property classes 8–12, steel and stainless steel A2/A4, wholesale batches.
DIN 6923 is a German standard for hexagon nuts fitted with a serrated flange. The ribbed flange surface provides a stronger connection with the material and prevents the joint from loosening spontaneously under dynamic loads or vibration.
The fastener is convenient to install thanks to its traditional hexagon shape: the nuts are tightened with a wrench or power tool, and they are suitable for repeated use.
Manufacturing features and materials
Hexagon nuts with a press washer are designed for use under high-load conditions. They are intended to create strong threaded joints and reliably secure the fastener; such nuts are used together with screws, bolts or studs of the corresponding diameter. They can be made from the following types of materials:
- Carbon steel with property class 8, 10 or 12. These are high-strength alloys designed for the highest loads. The nuts should be used with fasteners made of similar materials. To increase the steel’s corrosion resistance, it can be fitted with a zinc, nickel or chromium coating. It is applied by electroplating and provides protection against contact with an aggressive external environment.
- Stainless steels A2 and A4. These are acid-resistant austenitic steels of high strength; they last a long time thanks to their corrosion resistance. Such materials contain zinc, molybdenum, tungsten and other alloying components.
Products of this type conform to the higher product grade A; they strictly comply with the requirements of the standard. This ensures installation reliability and a long service life.
Technical specifications
In accordance with the standard, nuts with a press washer can be manufactured with the following dimensional characteristics:
- Thread diameter range in the hole: from M3 to M20.
- Total height of the nut including the flange: from 4 to 20 mm.
- Flange diameter of the nut: from 8 to 42 mm. The flange has serrations for a stronger grip on the material.
- Width across flats of the product: from 5.5 to 30 mm.
The presence of a flange protects thin sheet materials from damage while tightening a high-strength nut. The flange has an increased surface area: pressure on the material is reduced, preventing the appearance of cracks or surface deformation. No additional washers are required, which simplifies the assembly of threaded joints. The standard provides a wide range of sizes, which makes it possible to select a fastener with the required parameters.
Application options
Fasteners of this type can be combined with various kinds of threaded fasteners and are easy to install using simple hand tools. Main areas of application for nuts with press washers:
- Various sectors of mechanical engineering production. Such nuts are used for the needs of the automotive industry, machine-tool building, instrument manufacturing, production of various equipment, ships, aircraft, and more. In mechanical engineering, zinc-plated and stainless high-strength fasteners are used.
- Construction, various installation works. Nuts of this type can be used in the assembly of metal structures; they are used for installing frames, trusses, assembling bridges, tunnels, and various engineering structures. They can also be used in finishing works.
- Production of furniture and other household items. Strong nuts are suitable for joining parts made of wood and wood-based materials, plastic, metal, and more.
These are only the main application options: the range of uses for such fasteners is significantly wider.
Wholesale product order
The fasteners are supplied in a wide size range; it is also possible to select similar products to other standards.
FLOK supplies nuts and other types of fasteners in small, medium and large wholesale batches. The products comply with the requirements of the standards.
Dimensions of hexagon flange nuts (serrated) DIN 6923
| d | s | d2 |
|---|---|---|
| M5 | 8 | 11.8 |
| M6 | 10 | 14.2 |
| M8 | 13 | 17.9 |
| M10 | 15 | 21.8 |
| M12 | 19 | 26.0 |
| M16 | 22 | 34.5 |
Dimensions of hexagon flange nuts DIN 6923 (EN 1661) in mm
| d | d2 | m | s |
|---|---|---|---|
| M4 (EN 1661) | 10 | 4.65 | 7 |
| M5 | 11.8 | 5 | 8 |
| M6 | 14.2 | 6 | 10 |
| M8 | 17.9 | 8 | 13 |
| M10 | 21.8 | 10 | 15 |
| M12 | 26 | 12 | 18 |
| M16 | 34.5 | 16 | 24 |
| M20 | 42.8 | 20 | 30 |
Designations:
d - nominal thread diameter
d2 - flange diameter
m - nut height
s - width across flats
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