Online Parts Store › Phillips Machine Screw - Flat Head, 1/4"-20 x 3" Image 1 of 1 Phillips Machine Screw - Flat Head, 1/4"-20 x 3" $27.27 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Stainless External Tooth Lock Washer 1/4" $19.78 Phillips Tapping Screw - Pan Head, #8 x 1" $21.73 Phillips Tapping Screws - Flat Head, #14 x 1-3/4" $36.21 Phillips Tapping Screw - Pan Head, #8 x 1-1/4" $27.71 Seachoice 18-8 Stainless Steel Wing Nuts, 5/16-18 Size, Pack of 50 $101.59