This "Aerospace Series" Prestandard has been drawn up under the responsibility of AECMA-STAN (The
European Association of Aerospace Industries - Standardization). It is published on green paper for the
needs of the European Aerospace Industry. It has been technically approved by the experts of the
concerned Domain following member comments.
AECMA PREN 4252-1997 history
1997AECMA PREN 4252-1997 Aerospace Series Nuts, Anchor, Self-Locking, Fixed, 90 Degree Corner, Reduced Series with Counterbore, in Heat Resisting Steel, Silver Plated Classification : 1 100 MPa (at Ambient Temperature) /425 Degree C Edition P 1