Metric Bolts

Types of Metric Bolts We Offer at South Coast Fasteners

Metric Carriage Bolts

Metric carriage bolts have a rounded head and a square neck beneath it that prevents rotation during tightening. They are widely used in woodworking, fencing, decking, and furniture building where both fastening power and appearance matter. Their smooth head creates a clean finish, making them a preferred option for projects that balance strength and aesthetics.

Metric Lag Screws

Metric lag screws are heavy-duty fasteners with coarse threads and a hex head for driving torque. They are relied on for posts, beams, and structural framing where maximum holding power in wood is required. Builders and contractors turn to metric lag screws for residential, commercial, and industrial construction when stability is the priority.

Metric Flange Screws

Metric flange screws combine a hex head with an integrated washer face that spreads clamping pressure evenly. This feature eliminates the need for a separate washer, saving time while also reducing loosening under vibration. Automotive, machinery, and equipment industries depend on them for secure fastening in high-performance applications.

Applications and Amenities

Metric bolts are an essential part of nearly every major industry. In construction, they secure bridges, structural steel, and foundation systems. In manufacturing, metric bolts keep equipment operating safely while withstanding constant stress. Utility providers rely on them for poles, towers, and infrastructure, while the marine and agricultural sectors depend on corrosion-resistant bolts to endure the harshest outdoor conditions.

The advantage of using metric bolts lies in their ability to adapt to a wide variety of environments and applications. They make installations faster, help ensure compliance with strict safety codes, and give professionals confidence that their projects will last. With durability and versatility built in, metric bolts remain a cornerstone of reliable fastening.

Metric Bolts - Material Options

South Coast Fasteners stocks metric bolts in the following material grades, each chosen for specific strengths and applications.

Low Carbon Steel

Low carbon steel is an economical and dependable choice for general fastening needs. It offers solid strength at a cost-effective price, making it a staple in residential construction, framing, and standard industrial projects. Contractors often choose low carbon steel when projects demand reliability without added expense. Its versatility makes it one of the most common materials in everyday use.

Alloy Steel

Alloy steel delivers superior strength and toughness, making it ideal for demanding applications such as bridges, industrial equipment, and machinery. It is engineered to resist wear, fatigue, and high stress over time, ensuring lasting performance even in difficult environments. Many industries specify alloy steel metric bolts when failure is not an option and consistency is critical.

Stainless Steel A4 (316)

Stainless steel A4 (316) provides unmatched corrosion resistance, particularly in marine, chemical, and outdoor environments. It maintains both strength and appearance when exposed to saltwater, moisture, or industrial chemicals. For projects in coastal regions or plants handling corrosive materials, stainless steel A4 (316) offers long-term peace of mind and durability.

B7 Alloy Steel

B7 alloy steel is heat-treated to deliver exceptional tensile strength and resistance to high pressure. It is widely used in petrochemical plants, energy production, and environments where both high temperature and extreme stress are common. B7 alloy steel metric bolts provide the security needed in critical systems where performance cannot be compromised.

Metric Bolts - Available Finishes

South Coast Fasteners offers metric bolts in finishes designed to extend service life, provide corrosion protection, and meet different industry needs.

Zinc Cr+3

Zinc Cr+3 offers a clean, silver-blue appearance with moderate corrosion resistance. It is commonly applied to bolts used in indoor settings, machinery, or light manufacturing. The finish adds an extra layer of protection while also delivering a professional, uniform look that appeals to assembly and production work.

Yellow Zinc Cr+6

Yellow Zinc Cr+6 produces a golden finish with stronger corrosion resistance than standard zinc coatings. It is widely chosen in automotive, electrical, and agricultural industries where visibility and performance are equally important. The distinctive color also makes bolts easier to identify during installation and inspection.

Yellow Zinc Cr+6 Bake

Yellow Zinc Cr+6 Bake includes an additional baked treatment that reduces hydrogen embrittlement, making it ideal for higher-strength bolts. This finish is frequently specified in automotive, aerospace, and structural applications where reliability under stress is essential. Its protective qualities extend both the service life and performance of the fastener.

Plain

Plain metric bolts are untreated, making them the most economical option where corrosion resistance is not a concern. They are a smart choice for indoor applications or for assemblies where bolts will be painted or otherwise coated after installation. Their simplicity makes them a flexible solution for controlled environments.

Why Choose South Coast Fasteners?

South Coast Fasteners understands that choosing the right metric bolts is about reliability, safety, and peace of mind. Our products meet strict standards, and our team brings expertise to help guide you toward the right solution for any application. With dependable stock, friendly service, and fast turnaround, we make sourcing metric bolts straightforward and stress-free.

Shop Metric Bolts Online at South Coast Fasteners

Order metric bolts today through South Coast Fasteners. With bulk ordering options, a variety of materials and finishes, and expert support, we make sure you get exactly what you need when you need it. Our team is here to help with sizing, finish options, and any special project requirements.