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 Phillips Tapping Screw - Pan Head, #14 x 2" $45.91 Phillips Tapping Screw - Pan Head, #8 x 1/2" $13.86 Stainless Countersunk Finishing Washer, #10 $14.99 Stainless Cotter Pin 1/8" x 1-1/4" $65.75 Tee Nut - Stainless 10-24 $37.98