| 摘要 |
a. Fixing device such as screw, bolt and nut. b. Device characterised in that it is made of stainless martensitic steel to standard AFNOR Z 12 C 13, the whole of whose surface receives a treatment by means of a zinc- and chromium-based component, and at least the clamping portion of the device, namely the head of the screw or bolt or the nut thereafter undergoes a treatment with the aid of a polyamide after having been coated with a primer. c. The invention applies to the manufacture of a fixing device such as screw and bolt.
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