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.Dimensions meet ISO(formerlyDIN)specifications.Length is measured from under thehead.
Yellow Zinc-plated steel screws resist corrosion in wetenvironments.Match the thread spacing of matingcomponents.Fine and extra-fine threads are closely spaced to prevent loosening fromvibration:the finer thethread,the better theresistance.