Online Parts Store › Phillips Machine Screw - Pan Head. 1/4"-20 x 3-1/2" Image 1 of 1 Phillips Machine Screw - Pan Head. 1/4"-20 x 3-1/2" $46.42 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Stainless Countersunk Finishing Washer, #1/4 $21.92 Stainless Cotter Pin 5/32" x 1" $51.08 Stainless Fender Washer #10, .050" Thick, OD 3/4" $18.58 Phillips Tapping Screw - Pan Head, #10 x 3" $37.54 Carriage Bolt, 1/2"-13 x 4" $109.86