6-20 x 3/8 Phillips Oval Self Tapping Screw Type AB Fully Threaded Black Oxide KTP188 and a rib neck diameter

and a rib neck diameter of

These 1/4 x 1 1/2 Indented Hex Flange Lag Screws are Grade 2 Hot Dip Galvanized

These 10-16 x 1/2" Slotted Hex Washer Self-Tapping Screws are Type AB screws made of 18-8 stainless steel

The 9/16-18 Stover Alternative Automation Style Lock Nut Grade C Cad And Wax is a high-quality nut that is designed to provide a secure and reliable connection

The ribbed neck provides extra grip

6-20 x 3/8 Phillips Oval Self Tapping Screw Type AB Fully Threaded Black Oxide KTP188 and a rib neck diameterThese 6 20 x 3 8 Phillips oval self tapping screws are designed for use in a variety of applications. They are made of steel and have a black oxide finish for corrosion resistance. The screws have a Phillips drive and are fully threaded for maximum holding power. They are also self tapping, which means they can create their own threads in the material they are being driven into. These screws are ideal for use in wood, metal, and plastic.