4 Pack 63607 Rotary Cutter Blade Bolt Kit Replacement for Bush Hog Mower Parts, Heavy Duty - Nuts & Lock Washers, Replaces 802-263C, 7919, 252BH, 20322

What It Is

This is a 4-pack of heavy-duty rotary cutter blade bolt kits designed to secure mower blades to the spindle on Bush Hog-style shredders and brush mowers. Each kit includes one bolt, one nut, and one lock washer. It’s meant for replacing worn or damaged hardware on medium to large rotary cutters, not for standard residential push mowers.

Fitment & Compatibility

Check before buying:

• Brand/Model: This kit is marketed for Bush Hog mowers and replaces OEM part numbers 802-263C, 7919, 252BH, and 20322. It may also fit other brands using the same bolt pattern (e.g., some Land Pride, Woods, or Howse models), but verify by cross-referencing your machine’s blade bolt size.
• Bolt Specs: The bolt is typically 5/8″-18 thread, about 2″ long, with a 1″ hex head. Measure your existing bolt length and thread pitch—if your mower uses a smaller 1/2″ bolt or a different length, this won’t work.
• Deck Size: Commonly used on 4′ to 8′ rotary cutters, but not tied to a specific deck size. Ensure the bolt holes in your blade and spindle match.
• Grade: These are heavy-duty (likely Grade 5 or 8), but not all aftermarket bolts are hardened equally. Inspect the bolt shank and threads for burrs before use.

Key Things to Know

• Quality concerns: At 3.6 stars from only 3 reviews, there’s limited feedback. Some users report bolts being slightly undersized or threads not fully clean—check for fit before torquing.
• Installation difficulty: Easy—just remove old bolt, clean spindle threads, install new bolt with lock washer and nut. Torque to manufacturer spec (typically 100-150 ft-lbs for 5/8″ bolts). Use thread locker if recommended.
• Common gotcha: The lock washer is often a split-ring type, not a flat or star washer. If your machine calls for a nylon-insert lock nut, this kit’s nut may not hold as well under vibration. Replace annually or after blade removal.
• Reuse warning: Never reuse old blade bolts—they fatigue over time and can snap. This kit is a cheap safety replacement.

Should You Buy It

If you need a quick, budget-friendly bolt kit for a Bush Hog or similar rotary cutter and you’re comfortable checking thread fit and torque specs, this will get the job done. But with low review volume and potential quality variability, it’s a better pick for light-duty or occasional use than for heavy commercial shredding. For critical applications, stick with OEM or a known brand.