Online Parts Store › Phillips Tapping Screws - Flat Head, #6 x 5/8" Image 1 of 1 Phillips Tapping Screws - Flat Head, #6 x 5/8" $9.57 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Stainless Cotter Pin 3/32" x 1" $46.14 Tee Nut - Stainless 5/16"-18 $26.64 Stainless Fender Washer 5/8", .109" Thick, OD 2" $37.03 Phillips Tapping Screws - Flat Head, #6 x 1-1/4" $15.93 Stainless Cotter Pin 1/8" x 1-1/2" $55.55