06545400 — Nylon Lock Flange Nut .31-18 YWZC (Genuine OEM Ariens / Gravely Part) The 06545400 nylon lock flange nut is a genuine OEM Ariens / Gravely fastener featuring a .31-18 thread size, an integrated nylon locking insert, and yellow zinc coating (YWZC) for corrosion resistance. The flange design eliminates the need for a separate washer and helps distribute clamping load evenly, while the nylon insert provides vibration-resistant locking to reduce fastener loosening under heavy duty operation. This nut is commonly used in control linkages, chassis mounting points, deck hardware, steering connectors, and accessory brackets on residential and commercial mower platforms. Key Details Manufacturer Part Number: 06545400 Part Name: Lock Nut – Nylon Lock Flange Brand: Ariens / Gravely Thread Size: .31-18 (UNF) Style: Flanged nylon lock nut Finish: Yellow Zinc Coated (YWZC) Part Type: Fastener – self-locking nut Function: Prevents loosening due to vibration; distributes load Installation: Direct OEM replacement Typical Applications The 06545400 lock flange nut is used wherever secure vibration-resistant fastening is required, including: Control levers and linkage mounts Frame and chassis brackets Deck support and hardware fastening Steering linkage connections Accessories and guards Its low profile and integrated flange make it ideal in assemblies where space is limited and reliable locking is needed. Compatibility This Ariens / Gravely OEM lock nut is used across a variety of mower platforms, including: Zero-Turn & Stand-On Mowers:ZT, ZT XL, ZT X, ZT HD, ZTX, Pro-Turn Z / ZX, Pro-Stance series Walk-Behind & Commercial Units:Pro-Master, PM Series, Compact-Pro General Deck & Frame Assemblies:Side-discharge and rear-discharge deck hardware, linkage and control mounts It appears in assemblies across multiple serial number ranges and model families, where a vibration-resistant nut is needed to maintain secure attachment under load. Why Use Genuine OEM 06545400 Using the OEM Ariens / Gravely 06545400 nylon lock flange nut ensures: Proper thread engagement and torque retention Resistance to loosening under vibration and shock Even load distribution thanks to the integrated flange Corrosion resistance for outdoor equipment Compatibility with OEM hardware and torque specs This nut provides factory-correct reliability, fit, and performance, making it the correct replacement choice for Ariens and Gravely fastener applications.
