Flange Serrated Lock Nut Fits Bad Boy 013-5300-00 1/2"-13 by Rotary $6.28 Sold out 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Sold out PRODUCT INFORMATION Type Flange PRODUCT DESCRIPTION DESCRIPTION Lock Nut replaces Bad Boy 013-5300-00. 1/2-13 Flange Serrated Lock Nut for Idler Pulley Arm & Deck Wheel Mounting. REPLACES OEM BAD BOY 013-5300-00