2 Pack 90105-960-710 Mower Blade Hex Bolts Compatible with Honda 21" Lawn Mower HR214, HRA214, HR215, HRA215, HR216, HRA216, HRC215, HRC216, HRM215, HRB215 and HRS21

What It Is

This is a 2-pack of OEM-style hex flange bolts (part #90105-960-710) used to secure the mower blade to the crankshaft on select Honda 21-inch walk-behind mowers. Designed for the blade retention system on commercial and residential Honda models.

Fitment & Compatibility

Check your mower model number on the deck or engine shroud. These bolts fit Honda HR214, HRA214, HR215, HRA215, HR216, HRA216, HRC215, HRC216, HRM215, HRB215, and HRS21 models with a 21-inch deck. The bolt has a 10mm thread diameter and standard fine thread pitch (1.25mm). Do not assume compatibility with non-Honda mowers or other deck sizes—verify by comparing the bolt length (approx. 25mm) and hex head size to your existing bolt. OEM Honda bolts are typically marked, while aftermarket may vary slightly.

Key Things to Know

• Low rating warning: The single 1.0-star review suggests potential quality or fitment issues—inspect threads for burrs before installation.
• Torque matters: Tighten to 35-45 ft-lbs (per Honda spec). Overtightening can strip threads or warp the blade; undertightening can cause blade wobble.
• Replace with blade change: Always use new bolts when replacing blades to prevent fatigue failure. Reusing old bolts risks loosening over time.
• Thread locking optional: Honda does not require thread locker, but a dab of blue Loctite can prevent loosening on high-vibration mowers.

Should You Buy It

If you need a quick, cheap replacement for a lost or damaged blade bolt on a compatible Honda 21-inch mower, this 2-pack is a budget option. However, given the poor review, consider OEM Honda bolts from a dealer if you want guaranteed fit and durability. Best for light residential use where cost is the top priority.