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 Phillips Tapping Screw - Pan Head, #10 x 3/4" $32.06 Phillips Tapping Screw - Pan Head, #10 x 1" $29.03 Stainless Fender Washer #10, .062" Thick, OD 1" $48.06 Phillips Tapping Screws - Flat Head, #8 x 5/8" $12.41 Seachoice 18-8 Stainless Steel Wing Nuts, 1/4-20 Size, Pack of 100 $110.41