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 Tapping Screw - Pan Head, #8 x 3/8" $12.60 Phillips Wood Screw - Flat Head, #10 x 2" $44.47 Flat Washer, #8, .032" Thick, OD 3/8" $5.42 Socket Set Screw 1/4"-20 x 1/4" $26.96 Phillips Tapping Screw - Truss Head #8 x 1" $30.99