Fine Threaded 18-8 / 304 Stainless Steel Phillips Oval Head Machine Screws. Right Hand Fine Thread, UNF Fully Threaded Rust and Corrosion Resistant Fine Threaded Oval Head Machine Screws Have a Countersunk Head with a Raised Dome Top. Standards: ANSI B18.6.3 Fine Pitch Machine Screws in 18-8 / 304 Stainless Steel. Contact Our Sales Department for Bulk Pricing. Please View Matching Nuts & Washers Below.