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 Phillips Self Drilling Screw - Pan Head #10 x 1" $41.63 Phillips Tapping Screw - Pan Head, #14 x 3/4" $49.38 Lock Washer,1/2" $24.75 Stainless Cotter Pin 5/32" x 1" $51.08 Phillips Tapping Screws - Oval Head, #10 x 1-1/4" $28.85