N2 5571 Four (4) Self Tapping Screws/Bolts for Spindles: 918-04456A, 918-0240C, 618-04456, 918-04456, 918-0430A, 618-0427, 918-0574, 918-0240, 618-0594, 618-0268, 618-0111, 918-0428B Dimensions: thread Size: 5/16"-18, thread Length: 1" Warranty: This part shall be free from defects in material and workmanship under normal use and service for three-months from the date of purchase You can return this item (for any reason) if you ask for a return within 30 days of receiving your order and have not installed your product