Hex Cap Screws

Hex Cap Screws are everywhere and for good reason. In automotive, they hold suspension, steering, and engine components steady through heat, pressure, and vibration. In construction, they anchor steel to concrete, fasten framing members, and connect heavy hardware. Manufacturing plants, repair shops, and assembly lines rely on them to put together everything from industrial machines to robotics.

With their hex heads designed for high-torque tools and easy access, Hex Cap Screws install quickly and lock down tight. Whether you’re tightening bolts on a job site or torquing them on a lift, you want a fastener as strong as the parts it holds. That’s why Hex Cap Screws are the standard when failure is not an option.

Tough builds need the right materials and grades. At South Coast Fasteners, we know every job is different. Some require brute strength while others need corrosion resistance that lasts through all seasons, salt, and chemicals. Sometimes you need both. That’s why we offer a full range of materials and grades so you can match your hardware to the environment and the load it will face. Whether bolting into steel, securing moving machinery, or locking down components exposed to the elements, we’ve got the fastener for your job.

Steel Options

• Grade 2 Hex Cap Screws
  Made from low or medium carbon steel and are not heat treated. They’re great for general-purpose fastening where high tensile strength isn’t necessary. Mostly used in machinery, equipment builds, and structural assemblies that don’t demand heavy loads.

• Grade 5 and 8.8 Hex Cap Screws
  Offer greater tensile strength than Grade 2. These heat treated medium carbon steel fasteners are used in automotive, construction, industrial machinery, and anywhere higher strength under stress is required.

• Grade 8 and 10.9 Hex Cap Screws
  The go-to for demanding, high-load applications. Made from heat treated medium carbon alloy steel, these screws handle maximum tensile strength and vibration. Perfect for structural work, heavy machinery, and equipment that faces constant torque and impact.

Stainless Steel Options

• Stainless Hex Cap Screws
  The choice when corrosion resistance is important. You’ll find them in marine, offshore, chemical processing, food service, and outdoor applications. Our stainless steel grades include:

  • 18-8 (Type 304) for general corrosion resistance in food grade, commercial, and light marine use

  • 316 Stainless for excellent protection in saltwater, chemical, and high moisture environments

Non-ferrous Options

• Silicon Bronze Hex Cap Screws
  Provide excellent corrosion resistance, especially in marine and coastal areas. Non magnetic and known for strength and flexibility, Silicon Bronze is ideal where salt air and moisture are concerns.

• Brass Hex Cap Screws
  Combine corrosion resistance, electrical conductivity, and a clean finish. They’re commonly used in plumbing, electrical, and decorative applications where non magnetic fasteners are needed.

• Aluminum Hex Cap Screws
  Lightweight and corrosion resistant. Used in aerospace, automotive, and electronics, they are perfect where saving weight and resisting the elements are priorities.

Applications and Amenities

Hex Cap Screws are trusted to hold heavy parts, absorb vibration, and stay tight under intense torque. From shop floors to job sites, mechanics, builders, and fabricators rely on them. In construction, they anchor steel, frame structures, and secure load bearing joints. In automotive and heavy equipment, they hold engines, suspensions, and drivetrains under heat and stress. In manufacturing, they keep parts aligned and machines running 24/7. Designed for easy installation with standard tools and built to withstand torque, Hex Cap Screws provide steady connections that won’t loosen. With a wide variety of materials and finishes, these fasteners adapt to nearly any job or environment.

Why Choose South Coast Fasteners?

At South Coast Fasteners, we know what it takes for a Hex Bolt to hold and one that doesn’t. Our inventory is carefully selected for top performance, supporting tradesmen, technicians, builders, and plant managers who expect quality the first time. We stock deep, ship fast, and have experts ready to help with any fastening or industrial supply challenge.

Order Hex Cap Screws Online Today

Whether you need a small package, a bulk order, or a full job lot of Hex Cap Screws that won’t fail, we’ve got you covered. Browse our complete range of grades, sizes, and finishes online or contact us with questions. We’re here to help you build strong and fast.