Online Parts Store › Phillips Machine Screw - Flat Head, 1/4"-20 x 1" Image 1 of 1 Phillips Machine Screw - Flat Head, 1/4"-20 x 1" $50.70 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Stainless Fender Washer #10, .062" Thick, OD 1" $48.06 Nylon Flat Washer 1/4", 0.56" Thick, OD 11/16" $24.88 Phillips Tapping Screw - Pan Head, #14 x 3" $61.60 Phillips Tapping Screw - Pan Head, #14 x 3/4" $49.38 Phillips Tapping Screw - Truss Head #10 x 1-1/4" $50.76