NFE 25-511 French Type Serrated Washers | Spring Steel | Dacromet Coated
PRODUKTPARAMETER
Beschreibung
High-performance NFE 25-511 French type serrated lock washers. Hardened spring steel with Dacromet coating for 1000 hours salt spray resistance and maximum vibration security.
Abmessungen
Datenübersicht
| cURL Too many subrequests. | Inner Dia (di) [mm] | Outer Dia (do) [mm] | Thickness (s) [mm] | Height (h) [mm] |
| M5 | 5.1 | 10.2 | 1.0 | 1.8 |
| M6 | 6.1 | 12.2 | 1.2 | 2.1 |
| M8 | 8.2 | 16.2 | 1.4 | 2.6 |
| M10 | 10.2 | 20.2 | 1.6 | 3.0 |
| cURL Too many subrequests. | 12.4 | 24.2 | 1.8 | 3.3 |
| cURL Too many subrequests. | 16.4 | 32.5 | 2.5 | 4.5 |
| cURL Too many subrequests. | 20.5 | 40.0 | 3.0 | 5.5 |
cURL Too many subrequests.
| Key Feature | Technical Specification | Operational Benefit (Trust Driver) |
| Serrated Teeth | Sharp radial contact edges. | Pierces through oxidation and industrial paint for secure locking and conductivity. |
| Material Base | Hardened High-Grade Spring Steel. | Provides the high elastic force required to support Grade 8.8, 10.9, and 12.9 fasteners. |
| Surface Finish | Dacromet (Zinc Flake Coating). | Offers extreme durability against chemicals and heat while maintaining a slim coating thickness. |
| Conical Spring | NFE 25-511 standard geometry. | Compensates for structural settling and thermal expansion to preserve bolt preload. |
FAQs
Q1: Why is Dacromet coating superior for NFE 25-511 washers in outdoor use?
Dacromet is not only more resistant to salt spray than zinc plating, but it also handles thermal cycling better. In outdoor electrical or structural applications, it prevents the “white rust” and base metal corrosion that lead to joint failure.
Q2: Does the coating thickness interfere with the serration’s ability to lock?
No. The Dacromet process results in a very thin, controlled layer (typically 5 to 10 microns). This ensures that the sharp serrated teeth remain fully functional and able to “bite” into the mating surfaces.
