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Search Submit SELECT A CATEGORY CLOSE MENU Nav Menu 2 Nav Menu 3 Nav Menu 4 Nav Menu 5 Nav Menu 6 Nav Menu 7 Tools Home > Mower Parts > Shop By Part > Hardware (Nuts/Bushings/Spacers/Bolts) > Nuts > 013-9004-00 - Bad Boy Mowers 1" Nylock Nut 1/2 Nut - Fine 013900400 Bad Boy Part #013-9004-00 / #013900400 Product Info:Bad Boy Part #013-9004-00Genuine SKU: #013-9004-00 / OEM MPN: #013-9004-00, #013900400Part Description: 1" Nylock Nut 1/2 Nut - Fine for Bad Boy Mowers List Price: $5.99 Our Price: $4.99 Savings: $1.00 Product Code: 013-9004-00 Qty: Description 013-9004-00 Bad Boy Mowers 1" Nylock Nut (1/2 Fine Thread) – Genuine OEM Heavy-Duty Lock NutSecure critical mower hardware with the 013-9004-00 Bad Boy Mowers 1" Nylock Nut — a genuine OEM fine-thread locking nut designed for high-strength retention in Bad Boy mower assemblies. Engineered for durability and vibration resistance, this OEM nylon-insert lock nut helps prevent loosening under constant mower operation, ensuring long-term stability in deck, frame, and linkage applications.Built to factory specifications, this 1" nylock nut features a precision-machined fine thread (1"-14 application depending on assembly use) combined with a nylon locking insert that grips the bolt threads tightly. This design helps reduce maintenance issues caused by vibration, heavy loads, and continuous commercial mowing conditions.Key Features:Genuine OEM Bad Boy Mowers locking nut1" nylock nut with fine thread designNylon insert for vibration-resistant locking performanceHeavy-duty steel construction for long service lifeHelps prevent loosening under mower vibration and stressPrecision OEM fit for secure installationIdeal for deck, frame, and suspension assembliesDirect replacement for worn or missing OEM lock nutsCompatible Part Number:013-9004-00013900400Common Applications:Front end and caster assembliesDeck and spindle hardwareFrame and suspension linkage pointsVarious Bad Boy mower platforms including MZ, ZT Elite, Maverick, Rogue, Renegade, and Outlaw series depending on configurationWhy Customers Choose This OEM Nylock Nut:Compared to standard hardware-store lock nuts, the OEM 013-9004-00 provides exact thread sizing, correct nylon locking strength, and consistent OEM-grade durability. In mower applications where vibration is constant, using proper nylon lock nuts is essential to prevent hardware loosening that can lead to deck instability, rattling components, or safety issues.Why Buy From Us:Competitive pricing on genuine Bad Boy mower partsFast shipping and secure online orderingTrusted source for OEM mower hardware and fastenersExpert fitment support for correct applicationHigh-quality inventory ready to shipDedicated customer service for residential and commercial mower ownersMaintain factory-level fastening reliability with the OEM 013-9004-00 Bad Boy Mowers 1" Nylock Nut — the trusted heavy-duty locking solution built for long-lasting mower performance and secure assembly integrity.013-9004-00 Bad Boy Mowers 1" Nylock Nut - Bad Boy Mowers Part. We have the Bad Boy Part you need. We are here to help with all the Bad Boy Parts to keep your Bad Boy Mower going so you can continue to Mow with an Attitude! 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