Online Parts Store › Phillips Machine Screw - Flat Head, 10-24 x 1/2" Image 1 of 1 Phillips Machine Screw - Flat Head, 10-24 x 1/2" $19.27 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Flat Washer, 1/2", .078" Thick, OD 1-3/8" $74.51 Phillips Tapping Screws - Flat Head, #14 x 1-1/4" $25.76 Phillips Tapping Screw - Truss Head #10 x 3/4" $31.18 Socket Set Screw 1/4"-20 x 1/4" $26.96 Carriage Bolt, 1/2"-13 x 3" $92.78