NF E25-512 Standard Dimensions for Serrated lock washers: external form A, internal form J, form V
This norm has been cancelled
Conical Washers Internal Tooth - Symbol CDJ
This document specifies the dimensions and characteristics of conical washers with internal teeth, in carbon steel, of nominal diameter 2.5 mm to 16 mm. It defines the tests to be carried out and the designation. The conical washers with internal teeth are intended for static use in a screwed assembly (screws of quality class 6.8 or 8.8, and corresponding nuts).
Dimensional Drawing and Technical Diagrams
Key Dimensions and Technical Parameters
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Dimensions in mm: source NF E25-512 Withdrawn
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| Publication date 10/1984 | |||||||||||||
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d1 nominal diameter
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d2 nom
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s nom
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h min | h max | |||||||||
| 2.5 | 6 | 0.4 | 0.85 | 1.2 | |||||||||
| 3 | 8.5 | 0.5 | 1.1 | 1.5 | |||||||||
| 4 | 11 | 0.6 | 1.4 | 1.9 | |||||||||
| 4 | 14 | 0.8 | 1.8 | 2.4 | |||||||||
| 5 | 12 | 0.8 | 1.75 | 2.3 | |||||||||
| 5 | 16 | 1 | 2.2 | 3 | |||||||||
| 6 | 14 | 0.7 | 1.75 | 2.3 | |||||||||
| 6 | 18 | 1 | 2.2 | 3 | |||||||||
| 7 | 16 | 0.8 | 1.85 | 2.5 | |||||||||
| 8 | 17.5 | 0.9 | 2 | 2.7 | |||||||||
| 8 | 22 | 1.2 | 2.55 | 3.5 | |||||||||
| 10 | 20 | 1 | 2.2 | 3 | |||||||||
| 10 | 26 | 1.4 | 3 | 4.1 | |||||||||
| 12 | 24 | 1 | 2.4 | 3.2 | |||||||||
| 12 | 32 | 1.4 | 3.7 | 4.8 | |||||||||
| 14 | 27.5 | 1.2 | 2.85 | 3.8 | |||||||||
| 16 | 32 | 1.4 | 3.3 | 4.4 | |||||||||