Online Parts Store › Phillips Machine Screw - Oval Head, 1/4"-20 x 1-1/2" Image 1 of 1 Phillips Machine Screw - Oval Head, 1/4"-20 x 1-1/2" $34.07 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Stainless Fender Washer #6, .050" Thick, OD 3/4" $19.71 Seachoice 18-8 Stainless Steel Wing Nuts, 1/4-20 Size, Pack of 100 $110.41 Phillips Tapping Screw - Pan Head, #10 x 5/8" $24.31 Phillips Tapping Screw - Pan Head, #10 x 1-1/2" $36.40 Phillips Tapping Screw - Pan Head, #12 x 1" $40.94