Choose these Class10.9 steel screws for high-stressapplications,such asvalves,pumps,motors,and automotive suspensionsystems.They are at least25%stronger than medium-strength steelscrews.The flange distributes pressure where the screw meets thesurface,eliminating the need for a separatewasher.Head height includes theflange.Length is measured from under theflange.
Zinc-plated steel screws resist corrosion in wetenvironments.
Screws that meet ISO898-1or SAE J1199 comply with specifications and testing requirements for materialquality.Screws that meet ASMEB18.2.3.9M or DIN 6921 comply with specifications for dimensionalstandards.