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 Flat Washer, 3/8", .062" Thick, OD 1" $40.34 Stainless Fender Washer #10, .062" Thick, OD 1" $48.06 Carriage Bolt, 1/2"-13 x 3" $92.78 Stainless Cotter Pin 1/8" x 1" $63.67 Stainless External Tooth Lock Washer 3/8" $34.20