scope:

General

This annex contains additional information for the manufacture of bi-hexagon flange nuts outside Germany.

Owing to varyig approving procedures, production methods, materials etc., the details given in this standard on bi-hexagon flange nuts are not always sufficient for manufacture abroad. For instance, materials are used which may well ensure the required characteristics for a standard part in its final state but which are not listed as equivalent material in the corresponding data sheet of the German Aviation Materials Manual Part I.

The foreign materials listed in DIN 29895 are approved by the responsible qualification authorities as equivalent to the German materials.

The surface treatment required in clause A. 3 is equivalent to that called for in LN 9368 Part 1 and Part 5.

Differences in configuration due to varying manufacturing methods do not affect the performance and interchangeability provided the dimensions given in the table are adhered to.

A.2 Material

For alternative materials see DIN 29895.

A.3 Surface treatment

USA QQ-P-416, type II, class 2 or class 3

UK DTD 904