This "Aerospace Series I' Prestandard has been drawn up under the responsibility of AECMA
(The European Association of Aerospace Industries). It is published on green paper for the needs
of AECMA-Members. It has been technically approved by the experts of the concerned
Technical Committee following comment by the Member countries.
AECMA PREN 4255-1997 history
1997AECMA PREN 4255-1997 Aerospace Series Nuts, Anchor,Self-Locking, Fixed, Two Lug, with Counterbore, in Heat Resisting Steel, Silver Plated Classification: 1 100 MPa (at Ambient Temperature) / 425 Degrees C Edition P 1