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Description
06500920 – Standard Hex Nut 5/8-18 (Genuine OEM Ariens / Gravely Part)
The 06500920 standard hex nut (5/8-18 UNF) is a genuine OEM Ariens / Gravely fastener used extensively in mower deck, spindle, blade, and belt drive assemblies across a wide range of residential and commercial zero-turn equipment.
This nut is designed to provide secure clamping force on fine-thread (UNF) shafts and bolts, making it ideal for high-load rotating components such as blade spindles and deck hardware. The zinc clear chromate (ZCC) finish offers corrosion resistance while maintaining OEM appearance and fit.
Manufactured to Ariens and Gravely factory specifications, the 06500920 nut ensures proper thread engagement, strength, and long service life in demanding mowing applications.
Key Details
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Manufacturer Part Number: 06500920
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Part Name: Nut – Standard Hex
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Brand: Ariens / Gravely
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Thread Size: 5/8-18 (fine thread, UNF)
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Style: Standard hex nut
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Finish: Zinc Clear Chromate (ZCC)
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Part Type: OEM fastening hardware
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Function: Secures blades, spindles, and deck components
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Installation: Direct OEM replacement
Function & Applications
The 06500920 5/8-18 hex nut is commonly used in:
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Mower deck blade spindle shafts
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Blade mounting hardware
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Deck belt, blade, and spindle assemblies
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High-load rotating components requiring fine-thread retention
Fine threads provide improved holding strength and resistance to loosening when properly torqued, making this nut well suited for blade and spindle applications.
Compatibility
This Ariens / Gravely OEM nut is used across a very broad range of zero-turn mower platforms, including but not limited to:
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Gravely Z-Series & ZTX Models
ZT, ZT XL, ZT X, ZT HD, ZTX, ZTX CARB, ZT Stealth -
Deck Sizes Supported
34″, 42″, 48″, 52″, and 60″ mower decks -
Residential & Commercial Equipment
Multiple production ranges and serial numbers covering early, mid, and late models
It appears specifically in Deck, Belt, Blades, and Spindles assemblies across dozens of model variants.
Why Use Genuine OEM 06500920
Using the OEM 06500920 hex nut ensures:
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Correct 5/8-18 fine-thread fitment
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Proper clamping force on spindle shafts
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Reduced risk of loosening or thread damage
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Corrosion resistance with OEM finish
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Compatibility with factory torque specifications
This nut delivers OEM-level reliability, strength, and fit, making it the correct replacement choice for Ariens and Gravely mower deck and spindle assemblies.
