Online Parts Store › Phillips Machine Screw - Flat Head, 5/16"-18 x 2" Image 1 of 1 Phillips Machine Screw - Flat Head, 5/16"-18 x 2" $35.02 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like 308 Piece Stainless Steel Fastener Display $6,664.43 Phillips Tapping Screw - Pan Head, #8 x 1-1/4" $27.71 Phillips Self Drilling Screw - Pan Head #10 x 1" $41.63 Phillips Tapping Screws - Flat Head, #14 x 2" $41.13 Stainless Cotter Pin 3/32" x 1-1/2" $56.56