Online Parts Store › Phillips Machine Screw - Flat Head, 1/4"-20 x 2-1/2" Image 1 of 1 Phillips Machine Screw - Flat Head, 1/4"-20 x 2-1/2" $25.89 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Stainless Fender Washer 1/4", .062" Thick ,OD 1" $39.24 Stainless Cotter Pin 1/16" x 1/2" $9.76 Phillips Tapping Screws - Flat Head, #14 x 3" $59.58 Phillips Tapping Screw - Pan Head, #14 x 1-1/2" $37.79 Phillips Wood Screw - Flat Head, #8 x 3/4" $43.08