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

and its jaws open into lock position when placed within a hollow surface

(A8™) 5/16 ALLIGATOR® Flush Mount Anchor Nylon (100)

You can utilize these pieces of hardware in solid or hollow surfaces

27/32 x 6 Reduced Shank Drill Bit (1/2 Shank)

5/8-11 x 6 1/2 Hex Cap Screw SS 316 (A4) 3/4-10 A307 Grade A Carriage Bolts Zinc Plated 1 1/8-12 x 3 Socket5 8 11 x 6 1 2 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.