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 Phillips Tapping Screw - Truss Head #10 x 1" $33.32 Square Tapping Screw - Oval Head #10 x 1-1/2" $35.29 Square Tapping Screw - Oval Head #8 x 1" $32.17 Phillips Tapping Screws - Flat Head, #12 x 3" $42.89 Phillips Tapping Screws - Flat Head, #8 x 3/8" $11.90