Hex socket flat countersunk head screws fully threaded

BN 21

DIN 7991

(Standard withdrawn)

~ISO 10642

~UNI 5933

Headform	Headform Countersunk head
Drive	Drive Hexagon socket
Thread	Thread fully threaded
Material	Material Steel
Property class	Property class 010.9 / 10.9 (The head marking is determining)
Surface	Surface zinc plated blue

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Características

DIN 7991 (Standard withdrawn) ~ISO 10642 ~UNI 5933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.

Headform	Headform Countersunk head
Drive	Drive Hexagon socket
Thread	Thread fully threaded
Material	Material Steel
Property class	Property class 010.9 / 10.9 (The head marking is determining)
Surface	Surface zinc plated blue

Advertencias!

ISO 4042
Quenched and tempered fasteners ≥ 360 HV and tempered case-hardened fasteners with electroplated coatings: Susceptible to hydrogen embrittlement!
Further notice to residual risks can be found on our web page: Notes on use

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Productos alternativos

BN 1422 - DIN 7991 - ~ISO 10642

Tornillos de cabeza avellanada con hueco hexagonal, totalmente roscados - Acero - 010.9 / 10.9 (La marca de la cabeza es determinante) - láminas de zinc GEOMET® 500 A

BN 2102 - ISO 10642 - ~DIN 7991

Tornillos de cabeza avellanada con hueco hexagonal, totalmente roscados - Acero - 010.9 / 10.9 (La marca de la cabeza es determinante) - cincado pasivado azul

BN 2103 - ISO 10642 - ~DIN 7991

Tornillos de cabeza avellanada con hueco hexagonal, totalmente roscados - Acero - 010.9 / 10.9 (La marca de la cabeza es determinante) - láminas de zinc GEOMET® 500 A

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Warnings

BN 1422 - DIN 7991 - ~ISO 10642

BN 2102 - ISO 10642 - ~DIN 7991

BN 2103 - ISO 10642 - ~DIN 7991