3/8-16 x 7/8 Unslot Ind Hexwash Taptite Alternative Thread Roll Screw Full Thrd Zinc & Wax ABSF which means that they can

which means that they can be driven into metal without the need for a pre-drilled hole

This 8-32 x 3 1/2 Phillips round machine screw is made of steel and has a zinc finish

These 8-18 x 2 Phillips pan self-tapping screws Type AB are fully threaded and zinc-plated for corrosion resistance

which means that it has a fully threaded shank

These 12-24 x 3/8 Slotted Flat Undercut Machine Screws are fully threaded and made of zinc-plated steel

3/8-16 x 7/8 Unslot Ind Hexwash Taptite Alternative Thread Roll Screw Full Thrd Zinc & Wax ABSF which means that they canThe 3 8 16 x 7 8 Unslot Ind Hexwash Taptite Alternative Thread Roll Screw Full Thrd Zinc & Wax is a high performance screw designed for use in a variety of applications. It features a 3 8 16 thread size, a 7 8 inch length, and a full thread design. The screw is made of steel and has a zinc and wax coating for corrosion resistance. The unslotted hex washer head provides a secure hold and allows for easy installation and removal. The Taptite thread