You will notice that the Stainless Steel Tapping Screw is not listed in this section. The reason for that is because there is no plating. It is all stainless steel. Sometimes information has been omitted because it is understood. Remember we didn’t include the HX in a Hex Cap Screw? (Only a small amount of plating is listed in this section. We will go into further plating in the “Advanced” manual.)

0HC0250C01500Z5

The “Z” as listed below lets us that this HX Cap Screw is Zinc  Plated. So now we have identified a steel hex cap screw that is ¼ – 20 X 1½. ZC “0HC0250C01500Z…” (ZC is an abbreviation for Zinc.)