3/8" Marine Grade Stainless Steel Hex Lag Screws

Grade A2 / 18-8 / 304 Stainless Steel – ASME B18.2.1 Compliant

Equip your projects with 3/8" Marine Grade Stainless Steel Hex Lag Screws from Monster Bolts. Crafted from A2 / 18-8 / 304 stainless steel, these lag screws provide exceptional corrosion resistance and long-term durability. Perfect for marine, coastal, outdoor, and high-humidity environments where rust protection and reliability are essential.

Key Specifications

• Diameter: 3/8 inch
• Thread Pitch: 7 Threads Per Inch (7 TPI)
• Wrench Size (Across Flats): 9/16 inch
• Type: Hex Lag Screw (also called Lag Bolt)
• System of Measurement: Inch / Imperial / US
• Material Grade: Stainless Steel A2 / 18-8 / 304
• Standard: ASME B18.2.1 compliant

Marine-Grade Advantages

• Superior Corrosion Resistance: Designed for saltwater, humidity, and coastal exposure.
• Durable Strength: Maintains torque and holding power in demanding environments.
• Low Maintenance: Resists rust, oxidation, and staining for long-lasting performance.
• Non-Magnetic Properties: Ideal for equipment or installations where magnetism must be minimized.

Common Applications

• Marine and boating projects
• Dock construction and repair
• Outdoor framing and decking
• Timber structures in coastal environments
• General construction in high-moisture areas

Installation Tips

• Pre-drill pilot holes to prevent wood splitting and ensure smooth installation.
• Use a 9/16" wrench or socket for correct torque application.
• Apply anti-seize lubricant to prevent galling between stainless threads.
• Confirm the lag screw length matches your structural load requirements.

Order Yours Today

Get dependable corrosion resistance with our 3/8" Marine Grade Stainless Steel Hex Lag Screws. Perfect for professional and DIY marine construction projects. Enjoy fast shipping and outstanding customer support from Monster Bolts.