Hex socket flat countersunk head screws fully threaded

BN 21

DIN 7991

(Norm zurückgezogen)

~ISO 10642

~UNI 5933

Forma della testa	Forma della testa Countersunk head 90°
Impronta	Impronta Hexagon socket
Filettatura	Filettatura fully threaded
Materiale	Materiale Steel
Classe di resistenza	Classe di resistenza 010.9 / 10.9 (The head marking is determining)
Superficie	Superficie zinc plated blue

All features

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All prices are based on the minimum order quantity. If you have any questions or special requirement, please contact Bossard.

Features

DIN 7991 (Norm zurückgezogen) ~ISO 10642 ~UNI 5933

Fasteners to the given specification have a reduced loadability due to the head geometry according to ISO 898-1.
The general change-over from DIN 7991 to ISO 10642 in the practice requires a verification of the application.

Forma della testa	Forma della testa Countersunk head 90°
Impronta	Impronta Hexagon socket
Filettatura	Filettatura fully threaded
Materiale	Materiale Steel
Classe di resistenza	Classe di resistenza 010.9 / 10.9 (The head marking is determining)
Superficie	Superficie zinc plated blue

Warnings!

ISO 4042
Vergütete Verbindungselemente ≥ 360 HV und einsatzgehärtete, angelassene Verbindungselemente mit galvanischen Überzügen: Wasserstoffversprödungsgefahr!
Weitere Hinweise zu den Restgefahren finden Sie auf unserer Webpage: Anwendungshinweise

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