Online Parts Store › Phillips Machine Screw - Oval Head, 10-24 x 2-1/2" Image 1 of 1 Phillips Machine Screw - Oval Head, 10-24 x 2-1/2" $34.01 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Nylon Flat Washer #10, 0.32" Thick, OD 7/16" $17.32 Carriage Bolt, 1/2"-13 x 4" $109.86 Stainless Cotter Pin $169.61 Stainless Cotter Pin 5/32" x 2" $84.08 Seachoice Hex Nut, 5/16-24 $58.82