Choose these Class 10.9 steel screws for high-stress applications, such as valves,pumps,motors, and automotive suspension systems. They are at least 25% stronger than medium-strength steel screws. Dimensions meet ISO (formerlyDIN)specifications. Length is measured from under the head. The bolts have a thread of M20 * 2.5 and a length of 30mm.
Yellow Zinc-plated steel screws should be used in dry, noncorrosive environments. Match the thread spacing of mating components. Coarse threads are the industry standard: choose these screws if you don’t know the pitch.
