prEN 3299

Aerospace series - Shaft-nut and threaded ring, self-locking, right- or left-hand MJ threads, in heat resisting steel FE-PA2601 (A286), silver plated - Technical specification

Publication date:   Jul 23, 2026

General information

40.20   DIS ballot initiated: 12 weeks   Jul 23, 2026

CEN

ASD-STAN Aerospace

European Norm

49.030.30   Nuts | 49.030.50   Washers and other locking elements

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Scope

This document specifies the characteristics, qualification and acceptance requirements for self-locking shaft-nuts and threaded rings, with right- or left-hand MJ threads, in FE-PA2601, silver-plated, for aerospace applications.
Temperature class: 450 °C .
It is applicable whenever referenced.

Life cycle

PREVIOUSLY

PUBLISHED
EN 3299:2019

NOW

IN_DEVELOPMENT
prEN 3299
40.20 DIS ballot initiated: 12 weeks
Jul 23, 2026