1 3/8-12 x 4 1/2 Socket Cap Screw Alloy

These percentages exist in 303

providing much greater holding power than other self drilling anchors that are just a small screw in a larger screw

7/8-9 x 12 Socket Cap Screw Alloy

A single size tie-wire version is available for wire supported fixtures

5/8-18 x 2 3/4 Hex Cap Screw SS 316 (A4) Flat Split Drive Anchors Zinc Plated 1 3/8-12 x 4 1/25 8 18 x 2 3 4 Hex Cap Screw SS 316 (A4) . 316 series stainless steel differs from 18 8 by its molybdenum content (2 3%) and a higher nickel content (10 14%). 316 stainless steel has greater corrosion resistance than 18 8 as well as superior strength at high temperatures.