Online Parts Store › Phillips Machine Screw - Flat Head, 1/4"-20 x 1-3/4" Image 1 of 1 Phillips Machine Screw - Flat Head, 1/4"-20 x 1-3/4" $40.62 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Flat Washer, #6, .032" Thick, OD 3/8" $8.19 Square Tapping Screw - Flat Head,#10 x 1-1/4" $48.20 Stainless External Tooth Lock Washer 5/16" $19.48 Phillips Tapping Screw - Truss Head #8 x 1-1/2" $63.30 Stainless Cotter Pin 5/32" x 1" $51.08