Online Parts Store › Phillips Machine Screw - Flat Head, 10-24 x 1/2" Image 1 of 1 Phillips Machine Screw - Flat Head, 10-24 x 1/2" $19.27 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Lock Washer, M5 $10.83 Flat Washer, 1/4", .050" Thick, OD 1/2" (A/N Style) $11.46 Phillips Tapping Screw - Pan Head, #10 x 3/4" $32.06 Phillips Tapping Screws - Oval Head, #12 x 1-1/2" $30.55 Seachoice 01006 Lock Washer, #8 $15.43