Letectví a kosmonautika - Šrouby se šestihrannou hlavou, hrubou tolerancí dříku, krátkým závitem, ze slitiny niklu, s povlakem hliníku IVD - Třída: 1250 MPa (při teplotě okolí) / 425 °C (Norma k přímému použití jako ČSN).

The information about the standard:

Designation standards: ČSN EN 4128
Classification mark: 313148
Catalog number: 500227
Publication date standards: 1.9.2016
The number of pages: 16
Approximate weight : 48 g (0.11 lbs)
Country: Czech technical standard
Kategorie: Technické normy ČSN

Annotation of standard text ČSN EN 4128 (313148):

This European Standard specifies the characteristics of bolts, normal hexagonal head, coarse tolerance shank, short thread, in heat resisting nickel base alloy, aluminium IVD coated. Classification: 1 250 MPa / 425 °C. 1) Minimum tensile strength of the material at ambient temperature. 2) Maximum temperature that the screw can withstand without continuous change in its original characteristics, after return to ambient temperature. The maximum temperature is determined by the surface treatment