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 Phillips Tapping Screws - Flat Head, #14 x 3" $59.58 Phillips Tapping Screw - Pan Head, #10 x 2" $24.88 Phillips Tapping Screw - Pan Head, #8 x 2" $19.02 Phillips Tapping Screws - Flat Head, #8 x 1/2" $12.41 Stainless Cotter Pin 1/8" x 2" $18.81