... like dovetailing, dowelling and other traditional methods. Self tapping screw: Diameter: 3.5mm(#6),3.9mm(#7),4. ... Screws Screw Types: Drywall Screw, Chipboard Screw, Subfloor Screws, and Decking ScrewHead Types: Bugle Head, Double Countersunk Head, CSK HeadRecess Types: Phil, Square, ... : Black or Gray Phosphated, Zinc Plated, Decromet, Ruspert,Screw Guns Types: Hilti, Makita, etc This is Just an ...