63607 Rotary Cutter Blade Bolt Kit Replacement for Bush Hog Rotary Cutter Blade, 2 Bolts with Nuts & Lock Washers, Replaces 63607, 7919, 252BH, 20322

What It Is

This is a replacement bolt kit for Bush Hog rotary cutter blades, designed to secure blades to the stump jumper or blade spindle. It includes 2 bolts, nuts, and lock washers, intended for heavy-duty mowing applications like pasture, brush, or roadside cutting.

Fitment & Compatibility

Before buying, verify your Bush Hog model uses the 63607 bolt pattern (5/8" x 2" hex bolt with 5/8" lock washer and 5/8" nylon insert lock nut). This kit replaces OEM part numbers 63607, 7919, 252BH, and 20322. It fits most Bush Hog rotary cutters (e.g., 2615, 3615, 4815 series) but not zero-turn or riding mower decks. Measure your existing bolt length and thread pitch (5/8"-11) to confirm. Aftermarket kits like this may have slightly different head markings than originals but function identically.

Key Things to Know

• Grade 5 quality – these bolts are heat-treated and plated for corrosion resistance, suitable for high-torque blade retention.
• Installation difficulty – easy, requires a 15/16" socket or wrench; torque to 200-300 ft-lbs (check your manual). Over-tightening can strip threads.
• Common gotcha – lock washers can deform if reused; always replace with new ones (included here) to prevent blade loosening.
• Not universal – won’t fit most zero-turn or lawn tractor blades (those typically use smaller 3/8" or 1/2" bolts). Confirm your cutter’s bolt size and count.

Should You Buy It

This is a solid, affordable choice for Bush Hog owners needing a quick, reliable blade bolt replacement. If you have a standard 5/8" pattern rotary cutter and want a matched set of bolts, nuts, and lock washers, this kit saves hunting for individual hardware. Not for light-duty mowers or non-Bush Hog brands without checking fitment first.