Dot® Brand 3/4" Self Drilling Stud Screw - Stainless Steel with a Phillips head & Nickel Plated Brass Stud.
Material Specification: Screw stud: 260 Alloy Brass per ASTM B36. Screw: 302 HQ Stainless.
These line 24 snap buttons are used in 99.99% of marine, automotive and outdoor applications.
Sold each.