Online Parts Store › Phillips Tapping Screws - Flat Head, #6 x 3/8" Image 1 of 1 Phillips Tapping Screws - Flat Head, #6 x 3/8" $9.01 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Tee Nut - Stainless 5/16"-18 $26.64 Stainless Countersunk Finishing Washer, #10 $14.99 Blind Rivet, 1/8" x 1/2" $71.23 Stainless Countersunk Finishing Washer, #1/4 $21.92 Stainless Fender Washer #6, .050" Thick, OD 3/4" $19.71