AECMA PREN 2869-1993
航空和航天系列1 100MPa(室温)/650℃
Aerospace Series Nuts, Hexagonal, Slotted/Castellated, Normal Height, Normal Across Flats, in Heat Resisting Steel, Passivated Classification : 1 100 MPa (at Ambient Temperature) / 650 Degrees C Edition P 1