DIN 7991 hex socket flat-head screw-10.9
Allen screw with flat head. Once applied, it is levelled with the surface where it has been installed as it has a countersunk and flat head. This is a high-quality screw that can withstand high tightening torques. It is made of 10.9 grade steel.
Brochure-D7991.pdf
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Material:
High strength carbon steel
Finish:
Antioxidant oil
Hardness:
320-375 HV
Tensile strength:
Min. 1000 N / mm2
Conventional yield strength:
Min. 900 N / mm2 at 0.2%