Online Parts Store › Phillips Tapping Screws - Flat Head, #8 x 3/8" Image 1 of 1 Phillips Tapping Screws - Flat Head, #8 x 3/8" $11.90 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Phillips Tapping Screws - Oval Head, #10 x 1-3/4" $26.77 Nylon Flat Washer 5/16", 0.62" Thick, OD 7/8" $37.54 Stainless Cotter Pin 1/16" x 1" $17.13 Flat Washer, #4, .032" Thick, OD 5/16" $6.74 Stainless Cotter Pin 1/16" x 3/4" $17.76