Online Parts Store › Phillips Machine Screw - Pan Head. 1/4"-20 x 1/2" Image 1 of 1 Phillips Machine Screw - Pan Head. 1/4"-20 x 1/2" $38.86 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Phillips Tapping Screws - Oval Head, #12 x 1-1/4" $22.30 Phillips Tapping Screws - Flat Head, #14 x 3" $59.58 Phillips Tapping Screws - Oval Head, #12 x 3/4" $33.07 Phillips Tapping Screw - Pan Head, #14 x 1-1/4" $33.19 Nylon Flat Washer #6, 0.32" Thick, OD 3/8" $17.45