Online Parts Store › Phillips Machine Screw - Pan Head. 5/16"-18 x 2" Image 1 of 1 Phillips Machine Screw - Pan Head. 5/16"-18 x 2" $53.09 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Stainless Cotter Pin 5/32" x 1-1/2" $64.12 Square Tapping Screw - Flat Head,#8 x 1-1/4" $28.68 Tee Nut - Stainless 5/16"-18 $26.64 Nylon Flat Washer #6, 0.32" Thick, OD 3/8" $17.45 Stainless Cotter Pin 1/8" x 1-1/4" $65.75