Online Parts Store › Phillips Machine Screw - Truss Head 1/4-20 x 1" Image 1 of 1 Phillips Machine Screw - Truss Head 1/4-20 x 1" $60.34 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Flat Washer, #10, .050" Thick, OD 9/16 $16.12 Phillips Tapping Screws - Flat Head, #14 x 1-3/4" $36.21 Stainless External Tooth Lock Washer 3/8" $34.20 Square Tapping Screw - Oval Head #8 x 1-1/2" $54.12 Nylon Insert Locknut - Stainless 3/8-16 $28.40