Heavy Hex Bolts

South Coast Fasteners, Inc. offers a selection of heavy hex bolts built for strength, stability, and durability in demanding structural applications. These bolts feature a larger head than standard hex bolts, providing more surface area for load distribution and wrenching power. They’re a go-to fastener in construction, infrastructure, manufacturing, and heavy equipment maintenance anywhere you need fasteners that can take the pressure without giving out. Whether you're securing beams, assembling heavy machinery, or working on pressure piping systems, we stock the right grade, finish, and size to match your job specs. And if you're not sure what to use, we’re here to help you sort through it.

Order Premium Industrial Fasteners Today

Use the options below to order top-quality fasteners in the sizes and specifications you need. Questions about our fastener options? Contact our office in Anaheim, CA today, and our team will be happy to assist you. Whether you need repeat bulk orders or one-off small batch purchases, South Coast Fasteners has you covered for all your industrial fastener supplies.

Material Options

South Coast Fasteners stocks heavy hex bolts in trusted material grades that provide strength, durability, and reliability across both standard and high-pressure builds.

A307 Grade A

Made from low carbon steel, these general-purpose bolts are ideal for non-critical applications like bracing, light framing, or metal-to-wood connections. A solid pick for everyday builds that don’t require high tensile strength but still need dependable holding power.

A307 Grade B

A step up from Grade A, this version offers higher tensile strength and is typically used for cast iron flanges, pressure piping, and other plumbing or utility infrastructure jobs. Stronger than basic construction bolts, but still easy to work with on-site.

Grade A

A common option for carbon steel fasteners used in light structural, agricultural, or general industrial use. These bolts are cost-effective and versatile, working well for medium-duty installations where reliability and compatibility matter most.

A193 B7 Steel

A high-performance alloy steel that’s been heat-treated to handle high pressure, extreme temperatures, and corrosive environments. Common in refineries, chemical plants, and power generation, A193 B7 bolts are engineered for critical applications that demand serious strength and endurance.

Available Finishes

South Coast Fasteners offers multiple finish options to meet jobsite conditions, corrosion resistance needs, and code requirements.

Hot Dip Galvanized

Provides excellent protection against rust and corrosion, especially in outdoor or marine environments. This thick zinc coating bonds tightly to the bolt, making it ideal for structural steel, utility work, and anything exposed to the elements.

Plain

Raw, untreated steel that’s best suited for indoor, dry environments or when additional coatings or treatments will be applied on-site. Simple, economical, and ready for fabrication or finishing.

Yellow Zinc Cr+6

Adds a golden chromate layer over zinc for enhanced corrosion resistance and easy visual identification. Common in mechanical, automotive, or electrical installs where appearance and performance both matter.

Zinc Cr+3

A clean, bright finish that offers reliable corrosion protection and a smooth surface. This trivalent zinc coating is widely used across general hardware, industrial machinery, and light fabrication work.

Why Choose South Coast Fasteners?

At South Coast Fasteners, we know heavy hex bolts aren’t just another fastener, they hold up the structures and systems that keep your projects standing. That’s why we focus on stocking proven grades, offering reliable finishes, and backing it all with service that keeps things simple. Whether you’re planning a full structural install or need a few bolts to get through the week, we’ve got the parts and the people to make it easy.

Order Heavy Hex Bolts Online Today

South Coast Fasteners makes it simple to get the heavy hex bolts you need in the materials, grades, and finishes your project calls for. Browse our inventory online, or reach out for help with selection, technical questions, or bulk pricing. We’re here to help you get it done right, without slowing you down.