scope:

General

This annex contains additional information concerning the manufacture of self-locking nuts outside Germany.

Owing to varying acceptance procedures, production methods, materials, ect. the details given in this standard on self-locking nuts are not always sufficient for manufacture abroad. For instance materials are used abroad which do ensure the required characteristics of the standardized item in its final state, but which are not listed as equivalent materials in the relevant material specification of the German Aviation Materials Manual, Par I.

The foreign materials listed in clause A.2 are approved by the respective qualification authorities of the individual countries as equivalent ot the German material.

The surface treatment required in clause A.3 is equivalent to that called for in LN 9368, Parts 1.5 and 7.

Differences in configuration because of varying manufacturing methods do not affect the performance and interchange-ability provided that the dimensions given in the table are adhered to.

A.2 Materials

France

Z6 NCT 25 AIR 9160/C

UK

DTD 5076

USA

AMS 5735

A.3 Surface treatment

Test method as per AMS 2410