Online Parts Store › Phillips Machine Screw - Truss Head 1/4-20 x 1-1/2" Image 1 of 1 Phillips Machine Screw - Truss Head 1/4-20 x 1-1/2" $45.85 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Stainless Countersunk Finishing Washer, #6 $13.10 Phillips Tapping Screws - Oval Head, #10 x 3" $32.37 Stainless Countersunk Finishing Washer, #5/16 $22.42 Phillips Tapping Screws - Oval Head, #10 x 1" $27.33 Phillips Tapping Screw - Pan Head, #10 x 2-1/2" $37.66