Shop USA Structural & Heavy Hex Nuts Online at South Coast Fasteners

South Coast Fasteners, Inc. supplies USA structural and heavy hex nuts that are engineered for demanding steel-to-steel connections. Larger and thicker than finished hex nuts, heavy hex nuts provide the additional strength and clamping force required for bridges, towers, and industrial frameworks.

These nuts are paired with structural bolts such as A325 and A490, creating secure fastening systems used in construction, transportation, and energy infrastructure. With options in multiple grades and finishes, USA heavy hex nuts from South Coast Fasteners deliver both compliance with ASTM standards and long-term reliability in critical applications.

Stock Up and Save on USA-Made Fasteners and Tools from South Coast Fasteners

South Coast Fasteners, Inc. proudly carries a wide selection of USA made products from heavy duty fasteners to professional grade tools, all crafted to support construction, automotive, and industrial applications. To complete your setup, do not miss the SAS Safety® Raven Patriot Gloves, recognized nationwide as the best nitrile gloves available. Built for both strength and flexibility, these gloves alongside our full line of American made products give you the power to take on every project with reliability.

Types of USA Structural and Heavy Hex Nuts

USA 2H Heavy Hex Nut, A194/SA194, Plain

These plain finish heavy hex nuts are designed for high-pressure and high-temperature service. USA 2H nuts are trusted in petrochemical plants, energy facilities, and industrial environments.

USA 2H Heavy Hex Nut, A194/SA194, Zinc CR+3

Coated with zinc CR+3, these nuts provide added corrosion resistance while maintaining strength. USA 2H zinc CR+3 heavy hex nuts are used in power generation, construction, and heavy machinery assemblies.

USA 2H Heavy Hex Nut, A194/SA194, HDG & Colored Wax

These nuts combine hot dip galvanization with a colored wax finish for both corrosion protection and easier installation. USA 2H HDG and colored wax heavy hex nuts are ideal for bridges, towers, and outdoor structural projects.

USA A563 Grade C Heavy Hex Nut, Plain

USA A563 Grade C nuts are made from carbon steel and supplied in a plain finish. They are widely used in construction and industrial applications requiring moderate strength.

USA A563 Grade DH Heavy Hex Nut, Plain

USA A563 Grade DH nuts are manufactured for higher strength than Grade C. In plain finish, they are trusted in structural steel assemblies, heavy construction, and energy projects.

USA A563 Grade DH Heavy Hex Nut, HDG & Wax

These nuts combine high strength with the corrosion resistance of hot dip galvanization and the lubricity of wax. USA A563 Grade DH HDG and wax heavy hex nuts are commonly specified for bridges, highways, and marine structures.

USA Structural & Heavy Hex Nuts - Material Options

South Coast Fasteners stocks USA structural and heavy hex nuts in the following material grades, each chosen to meet specific performance standards.

A194/SA194 (2H)

USA A194/SA194 2H nuts are built for high-pressure, high-temperature service, making them essential in petrochemical, energy, and heavy industry applications.

A563 Grade C

USA A563 Grade C nuts are made from carbon steel and serve general-purpose structural applications.

A563 Grade DH

USA A563 Grade DH nuts provide greater strength than Grade C, making them the preferred choice in bridges, towers, and heavy construction.

USA Structural & Heavy Hex Nuts - Available Finishes

South Coast Fasteners offers USA heavy hex nuts in a curated range of finishes designed to meet environmental and structural demands.

Plain

USA plain heavy hex nuts are uncoated and best suited for indoor or controlled environments.

Zinc CR+3

USA zinc CR+3 heavy hex nuts provide a silver finish and reliable corrosion resistance.

Hot Dip Galvanized & Wax

USA HDG and wax heavy hex nuts combine a thick zinc coating with lubricity for easier installation and long-term outdoor protection.

Hot Dip Galvanized & Colored Wax

USA HDG and colored wax heavy hex nuts provide strong corrosion resistance while allowing for color-coded identification and reduced installation friction.

Why Choose South Coast Fasteners?

South Coast Fasteners is trusted for USA structural and heavy hex nuts because we provide products that meet industry standards and project requirements. With grades like A194/SA194, A563 Grade C, and A563 Grade DH, plus finishes tailored for specific environments, we deliver reliable fastening systems backed by fast service and knowledgeable support.

Shop USA Structural and Heavy Hex Nuts Online at South Coast Fasteners

Order USA structural and heavy hex nuts today from South Coast Fasteners and secure your projects with confidence. With options in multiple grades and finishes, along with bulk ordering and fast delivery, we make it easy to source the right fasteners for your structural and industrial needs.