Husqvarna 584953901 Self Tapping Bolt for Mounting Spindles to Deck, 5/6-inch-18 x 1-1/4-inch For Husqvarna/Poulan/Roper/Craftsman/Weed Eater Self Tapping Hex Head Hardened Steel Bolt Current part number 584953901 replaces previous part numbers 173984, 138776, 157722, 532138776, 532157722, 532173984, 539107630 and 9374. Replacement part for many brands including Husqvarna, Poulan, Poulan Pro, Roper, Sears/Craftsman, and Weed Eater Original equipment manufacturer replacement part 1-year warranty for defects in material or workmanship