Online Parts Store › Phillips Machine Screw - Flat Head, 1/4"-20 x 3/4" Image 1 of 1 Phillips Machine Screw - Flat Head, 1/4"-20 x 3/4" $30.11 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Phillips Tapping Screws - Flat Head, #14 x 1" $45.79 Phillips Tapping Screw - Pan Head, #8 x 1/2" $13.86 Stainless Cotter Pin 1/8" x 1-1/2" $55.55 Stainless Cotter Pin 1/8" x 1" $63.67 Flat Washer, 1/2", .078" Thick, OD 1-3/8" $74.51