Online Parts Store › Phillips Machine Screw - Pan Head. 1/4"-20 x 5/8" Image 1 of 1 Phillips Machine Screw - Pan Head. 1/4"-20 x 5/8" $51.33 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Square Tapping Screw - Oval Head #8 x 1" $32.17 Stainless Countersunk Finishing Washer, #8 $14.36 Phillips Tapping Screws - Flat Head, #4 x 3/4" $13.73 Phillips Tapping Screw - Truss Head #8 x 1-1/4" $39.30 Phillips Tapping Screw - Truss Head #10 x 1" $33.32