06500919 – Top Lock Flange Nut M8 (Genuine OEM Ariens / Gravely Part) The 06500919 top lock flange nut (M8) is a genuine OEM Ariens / Gravely fastener engineered to provide secure, vibration-resistant fastening in mower decks, frames, engine mounts, and drive system assemblies. This nut features a top-lock (deformed thread) locking design combined with an integrated flange, delivering consistent clamp load without the need for a separate washer. The all-metal locking action maintains holding strength in high-heat and high-vibration environments where nylon lock nuts are not preferred. Manufactured to Ariens and Gravely factory specifications, the 06500919 nut ensures precise fitment, durability, and long service life in commercial and residential equipment. Key Details Manufacturer Part Number: 06500919 Part Name: Nut – Top Lock Flange Brand: Ariens / Gravely Thread Size: M8 (metric) Style: Top-lock, flanged Finish: Zinc clear chromate (ZCC) Part Type: All-metal locking fastener Function: Prevents loosening under vibration and heat Installation: Direct OEM replacement Function & Applications The 06500919 M8 flange lock nut is commonly used in locations requiring high retention strength, including: Engine mounting hardware Mower deck and spindle assemblies Idler arms and belt drive components Frame, chassis, and structural brackets Control mounts and guard hardware The flanged base distributes load evenly, while the top-lock design resists loosening from continuous vibration and thermal cycling. Compatibility This Ariens / Gravely OEM fastener is used across a wide range of equipment platforms, including: Zero-Turn & Stand-On MowersZT, ZT XL, ZT HD, ZTX, Pro-Turn Z, Pro-Turn ZX, Pro-Stance Commercial Walk-Behind & Tractor ModelsPro-Master, PM Series, Compact-Pro Deck, Frame & Drive AssembliesSide-discharge and rear-discharge decks, idlers, guards, and brackets Used across multiple model years and serial number ranges. Why Use Genuine OEM 06500919 Using the OEM 06500919 top lock flange nut ensures: Reliable locking without nylon inserts Heat and vibration resistance Proper metric thread engagement Long-term durability and corrosion protection This fastener provides OEM-level strength, fit, and reliability, making it the correct replacement choice for Ariens and Gravely mower and equipment assemblies.
