Online Parts Store › Phillips Machine Screw - Flat Head, 3/8"-16 x 2-1/2" Image 1 of 1 Phillips Machine Screw - Flat Head, 3/8"-16 x 2-1/2" $25.76 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Nylon Insert Locknut - Stainless 10-32 $25.51 Square Tapping Screw - Flat Head,#10 x 1-1/2" $62.54 Phillips Wood Screw - Flat Head, #14 x 3" $73.50 Phillips Tapping Screw - Pan Head, #14 x 1-1/4" $33.19 Stainless Cotter Pin 1/8" x 1-1/4" $65.75