🔩 Shop Replacement Bolts

Square head bolts are known for their rugged look, old-world character, and unbeatable grip—but when it’s time to remove one, they can be a little tricky without the right tools and approach. Whether you're restoring antique hardware or upgrading your structure, here’s how to safely and effectively remove square head bolts from wood, metal, or masonry.

Tools You’ll Need:

• Adjustable wrench or 4-point socket

• Penetrating oil (like PB Blaster or WD-40)

• Wire brush

• Hammer (optional)

• Vise grips (for stubborn bolts)

• Patience and a steady hand

Step-by-Step Guide to Removing Square Head Bolts

1. Assess the Bolt

Is the bolt rusted, painted over, or recessed into the material? Start by cleaning off debris or corrosion with a wire brush to get a clear grip on the head.

2. Apply Penetrating Oil

If the bolt is old or rusted in place, apply penetrating oil around the head and nut. Let it soak for 10–15 minutes (or longer for severe corrosion) to break the rust bond.

3. Choose the Right Wrench

Use an adjustable wrench or a 4-point socket designed specifically for square heads. Avoid using 12-point sockets or open-end wrenches, as they can round the corners of the bolt.

🔧 Pro tip: Square bolts don't fit standard hex tools—always use a snug 4-point for best results.

4. Turn with Steady Pressure

Apply slow, steady pressure counter-clockwise to loosen the bolt. If it resists, try tightening it slightly first, then loosening again. This can help break any corrosion seal.

5. Tap It Loose (if needed)

If the bolt won’t budge, use a hammer to gently tap the bolt head or the wrench while applying torque. This vibration can help break it loose.

6. Use Vise Grips for Stripped Heads

If the square head is worn down or rounded, clamp on a pair of locking vise grips for better traction.

What If the Bolt Breaks?

If the bolt shears off or is severely corroded:

• Use a bolt extractor kit

• Drill a pilot hole in the shaft

• Carefully back it out with a reverse-threaded extractor

Or—if all else fails—cut it off and replace it with one of our hand-forged square head bolts.

Need Replacements?

If you’ve removed your bolt and it’s too worn or damaged to reuse, we’ve got you covered. Our Square Head Bolts Collection features historically accurate, heavy-duty bolts perfect for restoration, timber framing, rustic hardware, and more.

Remove with care, replace with craftsmanship.
At Old West Iron, we believe even hardware should be built—and unbuilt—with intention.