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

Manufacturer Part Number: 06500920
Part Name: Nut Standard Hex
Brand: Ariens / Gravely
Thread Size: 5/8-18 (fine thread, UNF)
Style: Standard hex nut
Finish: Zinc Clear Chromate (ZCC)
Part Type: OEM fastening hardware
Function: Secures blades, spindles, and deck components
Installation: Direct OEM replacement

Function & Applications

The 06500920 5/8-18 hex nut is commonly used in:

Mower deck blade spindle shafts
Blade mounting hardware
Deck belt, blade, and spindle assemblies
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:

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:

Correct 5/8-18 fine-thread fitment
Proper clamping force on spindle shafts
Reduced risk of loosening or thread damage
Corrosion resistance with OEM finish
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.