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China SS304/316 Stainless Steel Lag Screws Factory & Suppliers - Marine Grade, Rust Resistant for Saltwater Applications
Stainless Steel Hex Lag Screws
🔩 Product Overview
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Stainless Steel Hex Lag Screws — engineered for superior corrosion resistance, high strength, and long-lasting performance in demanding applications.
Stainless steel hex lag screws are heavy-duty fasteners designed for wood-to-wood and wood-to-metal connections. Their hexagonal head allows for easy installation using a wrench or socket, providing excellent torque and grip. The coarse threading ensures a secure hold even in softwood, hardwood, and composite materials.
✅ Key Features
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Corrosion Resistant
Made from high-grade stainless steel, ideal for outdoor, marine, and humid environments.
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High Strength
Delivers outstanding tensile and shear strength for structural and load-bearing applications.
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Hex Head Design
Easy to drive with a wrench or socket set, ensuring fast and efficient installation.
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Versatile Use
Suitable for wood framing, decking, fencing, landscaping, and general construction.
📋 Product Specifications
| Specification | Details |
|---|---|
| Material | Stainless Steel (SS304 / SS316) |
| Head Type | Hex (Hexagonal) |
| Thread Type | Coarse Thread (Lag Thread) |
| Drive Type | Hex Wrench / Socket |
| Finish | Natural Stainless / Polished |
| Standards | ASME B18.2.1 / DIN 571 |
🏗️ Applications
- Deck and patio construction
- Outdoor fencing and landscaping
- Marine and coastal environments
- Heavy timber framing and structural connections
- Pergolas, gazebos, and garden structures
- General woodworking and construction projects
❓ Frequently Asked Questions
💬 What is a stainless steel hex lag screw used for?
Stainless steel hex lag screws are heavy-duty fasteners primarily used to connect large pieces of wood or attach wood to metal. They are widely used in decking, fencing, timber framing, and outdoor construction projects where strength and corrosion resistance are essential.
💬 What is the difference between SS304 and SS316 stainless steel lag screws?
SS304 is the standard grade offering good corrosion resistance for most outdoor applications. SS316 contains molybdenum, providing superior resistance to saltwater, chlorides, and harsh chemicals — making it the preferred choice for marine and coastal environments.
💬 Do I need to pre-drill before installing hex lag screws?
Yes, it is strongly recommended to pre-drill a pilot hole before driving lag screws. This prevents the wood from splitting, reduces installation effort, and ensures a more accurate and secure fastening. The pilot hole should be slightly smaller in diameter than the screw shank.
💬 How do I install a stainless steel hex lag screw?
First, mark the desired location and drill a pilot hole. Insert the lag screw by hand to start the threading, then use a wrench, socket wrench, or impact driver with the appropriate hex socket to drive the screw firmly into place. Avoid over-tightening to prevent stripping or wood damage.
💬 Are stainless steel hex lag screws suitable for outdoor use?
Absolutely. Stainless steel hex lag screws are highly resistant to rust and corrosion, making them an excellent choice for outdoor, humid, and marine environments. They maintain their structural integrity and appearance even when exposed to rain, moisture, and UV radiation over long periods.
💬 What sizes are available for stainless steel hex lag screws?
Stainless steel hex lag screws are available in a wide range of sizes to suit various applications. Common diameters range from 1/4 inch to 3/4 inch, with lengths typically from 1 inch up to 6 inches or more. Custom sizes can also be manufactured based on specific project requirements.