Screws and bolts with internal drive

BN 6404 - ~ISO 7380-1 - ~DIN 34805-1

Headform	Button
Drive	Hexalobular socket
Thread	fully threaded
Material	Steel
Property class	08.8 / 8.8 (The head marking is determining)
Surface	zinc plated blue

Hexalobular (6 Lobe) socket button head screws fully threaded
Steel - 08.8 / 8.8 (The head marking is determining) - zinc plated blue

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