Online Parts Store › Phillips Machine Screw - Pan Head. 1/4"-20 x 4" Image 1 of 1 Phillips Machine Screw - Pan Head. 1/4"-20 x 4" $58.13 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Flat Washer, 1/4", .050" Thick, OD 1/2" (A/N Style) $11.46 Phillips Tapping Screw - Pan Head, #12 x 1-1/2" $30.92 Flat Washer, 3/8", .062" Thick, OD 1" $38.36 Square Tapping Screw - Flat Head,#10 x 2" $31.61 Stainless Cotter Pin 1/8" x 1-1/2" $55.55