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 Phillips Tapping Screw - Truss Head #10 x 1-1/4" $50.76 Square Tapping Screw - Oval Head #10 x 1-1/4" $57.05 Phillips Tapping Screw - Truss Head #8 x 1-1/4" $39.30 Phillips Tapping Screws - Oval Head, #12 x 2-1/2" $39.93 Phillips Tapping Screw - Truss Head #10 x 1" $33.32