Online Parts Store › Phillips Machine Screw - Flat Head, 1/4"-20 x 1" Image 1 of 1 Phillips Machine Screw - Flat Head, 1/4"-20 x 1" $50.70 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Phillips Tapping Screw - Pan Head, #12 x 3/4" $37.60 Phillips Tapping Screws - Oval Head, #12 x 2" $30.67 Phillips Tapping Screws - Oval Head, #12 x 3/4" $33.07 Phillips Tapping Screws - Flat Head, #8 x 3/4" $12.91 Phillips Tapping Screws - Flat Head, #14 x 1-1/4" $25.76