Description
Hexagon Flange Nut M4, DIN 6923, Steel Grade 8, Zinc-Plated, Blue Passivated (A2K) — BOLTON SKU 63482.
About the Wurth 037900004 Hex Flange Nut M4, DIN
This is the Würth article 037900004 hexagon flange nut, listed by the manufacturer as DIN 6923, steel property class 8, zinc-plated and blue passivated (A2K), in thread size M4. DIN 6923 covers hexagon nuts made with a conical bearing flange formed integrally with the nut body. The flange enlarges the bearing area under the nut and spreads clamp load over a wider footprint, which removes the need to fit a separate washer in many assemblies. Würth’s designation for this article gives a 7 mm width across flats for the hexagon. The material is carbon steel to property class 8 with an electroplated zinc coating and a blue passivation layer. DIN 6923 has been superseded in the European system by EN 1661, although the DIN reference remains in common catalogue use.
Key specifications
| Attribute | Value |
|---|---|
| Manufacturer | Würth |
| Article number | 037900004 |
| Standard | DIN 6923 (superseded by EN 1661) |
| Thread | M4 |
| Width across flats | 7 mm |
| Material | Steel, property class 8 |
| Finish | Zinc-plated, blue passivated (A2K) |
| Form | Hexagon nut with integral flange |
Typical applications
M4 is a light assembly thread, so this nut is normally used on thin brackets, panels, enclosure fixings, cable-cleat mounts and sub-assembly hardware where a washer would otherwise be needed to protect a soft or thin mating face. The wide flange helps where the clamped part is sheet metal or a plastic moulding and local bearing stress needs to be reduced. The zinc and blue passivate finish suits indoor and sheltered installations rather than continuous outdoor exposure.
Supplied by BOLTON Technical Equipment Supplies against request for quotation. Add this item to your RFQ basket to request pricing, lead time and documentation requirements (e.g. CoC, datasheets or test reports where applicable).
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