Not all fasteners are created equal. Some are meant to disappear behind drywall or trim. But others—like square head bolts and nuts—are designed to be seen, admired, and trusted.

Used since the 19th century and still forged today for restoration and new builds alike, these bold, geometric fasteners bring both historic integrity and modern strength to your project.

If you’re building with purpose—or restoring with pride—here’s why square head hardware still holds its place at the top of the pile.

What Are Square Head Bolts?

Square head bolts are threaded fasteners with a four-sided head, offering a broader gripping surface and a more traditional look than modern hex bolts. They were the go-to choice in the 1800s and early 1900s before mass-produced hex bolts took over the hardware aisle.

But make no mistake—square head bolts are anything but outdated. At Old West Iron, we offer a full line of square head bolts in a variety of lengths, finishes, and thread styles, forged to match your needs and your aesthetic.

Why Choose Square Head Hardware Today?

• Authentic Restoration
  Square head bolts are essential for historic preservation projects. Whether you’re restoring a covered bridge, barn, or timber-frame home, using period-correct hardware matters—and it shows.

• Rugged Aesthetic
  Square heads offer a distinct, old-world charm that fits perfectly in rustic, industrial, or western design themes. They don’t hide behind trim. They become part of the visual story.

• Ease of Installation
  The flat edges make them easier to grip with traditional tools—even in rough or outdoor conditions. That’s why many blacksmiths, framers, and traditional woodworkers still prefer them.

• Built to Last
  Like everything we forge, our square head bolts are made from solid steel and designed to handle heavy structural loads without fail.

Nuts That Hold Their Own

A bolt’s only as good as the nut that backs it up. That’s why we offer a range of nuts and cap nuts to complete the set—including:

• Square Nuts – Simple and strong, with a classic profile that pairs perfectly with square bolts

• Cap Nuts – Ideal for finishing exposed bolts on gates, doors, and furniture with a clean, safe edge

• Decorative Nuts – Hammered or textured to add character to an otherwise utilitarian detail

Each nut is finished to match your bolt—available in black, oil-rubbed bronze, raw steel, and other patinas to fit your project’s style.

Where to Use Square Head Bolts and Nuts

• Timber frame construction

• Post and beam barns

• Pergolas, pavilions, and arbors

• Gates and heavy wood doors

• Furniture building

• Industrial-style fixtures or shelving

Whether you’re building something new or paying tribute to the past, square head hardware is more than functional—it’s foundational.

Style That Doesn’t Compromise on Strength

In a market flooded with flimsy, one-size-fits-all fasteners, square head bolts stand out—literally and figuratively. They remind us that hardware should do more than hold things together. It should carry the same weight of design, integrity, and craftsmanship as every beam and board.

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Maddison Mellem
Writing from the forge at Old West Iron