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 Screw - Pan Head, #8 x 3/4" $19.21 Phillips Tapping Screw - Truss Head #8 x 3/4" $17.19 Flat Washer, 1/2", .078" Thick, OD 1-1/4" $38.42 Seachoice 01533 Hex Nut, 1/2-13 $66.78 Carriage Bolt, 1/2"-13 x 4" $109.86