Lag Screws Available at South Coast Fasteners

South Coast Fasteners, Inc. offers lag screws, also known as lag bolts, built for secure fastening into wood, masonry anchors, and structural framing. These heavy-duty screws feature coarse threads and hex heads that allow for high torque and solid grip during installation. Lag screws are often used where a bolt and nut are not possible but where strong, load-bearing performance is still required. Whether you are anchoring heavy timber, bracing structural panels, or installing equipment into studs or joists, we supply the sizes, grades, and finishes to help you drive it in and trust it will hold.

South Coast Fasteners Offers Affordable Fasteners Built to Last a Lifetime

If you're looking for a trusted supplier of wholesale industrial fasteners, South Coast Fasteners is your solution. Contact our Anaheim, CA office to learn more about our product options and how we can support your project needs. For helpful service, fast order turnaround, and high-quality fasteners in bulk or small batches, choose South Coast Fasteners.

Types of Lag Screws

Hex Lag Screw, Plain

Plain finish hex lag screws are made from durable carbon steel for general-purpose wood-to-wood or wood-to-metal fastening. Commonly used in framing, heavy timber construction, and machinery installation where coatings are applied later.

Hex Lag Screw, Zinc CR+3

Zinc CR+3 plated lag screws offer reliable corrosion resistance and a clean, bright finish. Ideal for indoor and light outdoor applications like decking, structural woodwork, and equipment anchoring.

Hex Lag Screw, HDG

Hot-dip galvanized lag screws provide heavy-duty corrosion protection for outdoor and marine environments. Frequently used in docks, fencing, and heavy timber framing exposed to the elements.

Stainless 18-8 Hex Lag Screw

Constructed from 18-8 stainless steel, these lag screws resist rust and staining, making them ideal for food-grade, outdoor, and light marine use. Perfect where appearance and longevity are priorities.

Stainless 316 Lag Screw

Engineered for the harshest conditions, 316 stainless lag screws provide superior resistance to saltwater, acids, and chemicals. Commonly used in coastal construction, marine fittings, and chemical plant installations.

Lag Screws - Material Options

South Coast Fasteners stocks lag screws in material grades that balance cost efficiency, corrosion protection, and long-term performance across residential, commercial, and industrial applications.

A307 Grade A

These low carbon steel lag screws are widely used in residential framing, fence posts, landscaping, and general utility connections. A307 Grade A offers moderate strength and excellent workability, making it a popular choice for straightforward fastening where code does not require a structural-grade bolt.

Grade 2

This entry-level grade is common in agricultural and non-critical wood applications. Grade 2 lag screws are economical and easy to drive, often used in light-duty framing, cabinetry support, or interior blocking where vibration and stress are minimal. Simple, consistent, and readily available in a wide range of sizes.

Grade 5

Heat-treated for higher strength and better torque resistance, Grade 5 lag screws are used when fastening into dense wood, heavy framing, or composite materials that require tighter clamping force. These screws are common in deck framing, structural blocking, and machinery installation where load paths or pullout strength are a concern.

Stainless Steel 18-8

This corrosion-resistant alloy is designed for use in outdoor, marine, or high-moisture environments. Stainless steel lag screws are a preferred option for docks, outdoor framing, fencing, and long-term exterior projects. They offer the strength you need with the appearance and weather protection your job demands.

Stainless 316

Stainless Steel 316 Lag Screws are designed for superior corrosion resistance in the harshest environments. Made from marine-grade stainless steel, they offer excellent protection against saltwater, chemicals, and moisture. Commonly used in coastal construction, docks, and chemical facilities.

Lag Screws - Available Finishes

South Coast Fasteners offers lag screws with finish options that protect against rust, match visual design goals, and extend the usable life of the fastener.

Hot Dip Galvanized

This thick zinc coating is ideal for protecting lag screws in outdoor framing, treated lumber, and marine applications. The finish forms a strong barrier against corrosion and is often specified for deck construction, beam anchoring, or utility mounting where weather exposure is constant.

Plain

Uncoated steel for interior use or jobs where the screws will be painted, sealed, or otherwise protected after installation. Plain finish lag screws are cost-effective and often used in framing, blocking, or controlled environments where rust risk is low.

Zinc Cr+3

A bright, silver-toned finish that provides dependable rust resistance for everyday use. Zinc Cr+3 lag screws are common in shop environments, interior wood assemblies, and equipment setups where a clean, professional appearance is preferred and consistent performance is required.

Why Choose South Coast Fasteners?

At South Coast Fasteners, we know that when a lag screw is going in, it needs to hold. There is no room for stripped heads, soft threads, or mismatched sizing. That's why we supply the grades, diameters, and coatings that line up with what builders and contractors actually use. Whether you are working in the field, the shop, or the garage, we will get you the right lag bolt with no guesswork and no delays.

Shop Lag Screws Online at South Coast Fasteners

South Coast Fasteners makes it easy to order lag screws in the exact length, diameter, and finish your job requires. Browse our online inventory for standard and stainless lag screws, or reach out for help with application specs, volume pricing, or shipping timelines. We are ready to support your build from the first pilot hole to the final turn of the wrench.