5/8"-11 x 2-1/4" Blades Cutting Edge Plow Bolts & Nuts for Snow Plow Construction Machinery（4 Pack）

What It Is

These are 5/8"-11 x 2-1/4" plow bolts and nuts designed to secure cutting blades to snow plow equipment, construction machinery, or heavy-duty mower decks. They are not standard mower blades—they are the fasteners that hold blades in place on equipment requiring high-strength, flush-mount hardware.

Fitment & Compatibility

Before buying, confirm three things:

• Thread size: Must be 5/8"-11 (coarse thread). Measure your existing bolt or check the manual.
• Length: The bolt shaft is 2-1/4" (measured from under the head to the tip). Ensure your blade thickness and mounting plate combined don’t exceed this.
• Head style: Plow bolts have a countersunk, square-shoulder head that sits flush in a matching hole. Your blade/deck must have a countersunk or square-hole pattern—round holes won’t work.

These are aftermarket, not OEM-specific. They fit any equipment (snow plow, skid steer, tractor, zero-turn mower) that uses 5/8"-11 plow bolts of this length. No brand or model restrictions beyond the thread and hole shape.

Key Things to Know

• Grade matters: These are likely Grade 5 or 8. For heavy plow or construction use, Grade 8 is stronger. If your equipment manual specifies Grade 8, verify this set meets that.
• Installation is straightforward: Use a wrench and socket. Torque to manufacturer spec—overtightening can strip threads or crack the blade.
• Countersunk fit is critical: If your blade holes aren’t countersunk or square, the bolt head won’t sit flush. Check before buying.
• Includes nuts: The pack comes with matching lock nuts (likely nylon insert or serrated flange). Confirm they are the same grade as the bolts for full strength.

Should You Buy It

Buy these if you need a budget-friendly, 4-pack set of 5/8"-11 x 2-1/4" plow bolts for a snow plow, construction attachment, or mower deck that uses this specific hardware. They are a solid value at $11.99 for light to medium-duty use, but if you’re pushing heavy snow or rock, verify the grade meets your equipment’s requirements.