Bulk 3/4"-4.5 Hex Lag Screws Stainless Steel 316 (A4)

Marine-Grade, Heavy-Duty Fasteners for the Most Demanding Wood Connections

Take on your most challenging marine, chemical, and outdoor projects with our premium 3/4"-4.5 Hex Lag Screws, crafted from 316 (A4) stainless steel. Featuring a 3/4" diameter and approximately 4.5 TPI (threads per inch), these lag screws—often referred to as lag bolts—deliver exceptional holding power in wood while offering unparalleled corrosion resistance in harsh environments.

The hex head design allows for easy installation with a wrench or impact driver. Coarse threads and a sharp point ensure maximum grip in wood, but remember to pre-drill pilot holes to prevent splitting and ensure proper alignment. These large-diameter, marine-grade screws are ideal for securing major structural components, waterfront construction, or any project where exposure to saltwater, chemicals, or moisture demands top-tier durability and strength.

Key Benefits of Our Stainless Steel 316 Hex Lag Screws

• Marine-Grade Corrosion Resistance: 316 (A4) stainless steel resists rust, pitting, and corrosion, even in saltwater and chemical-rich environments.
• High Holding Power: The 3/4" diameter and ~4.5 TPI coarse threads deliver stable, long-lasting connections in wood.
• Heavy-Duty Strength: Suitable for large-scale, high-load projects demanding maximum stability and durability.
• Easy Installation: The hex head design allows driving with standard tools—just pre-drill the proper pilot hole first.
• Reliable Connections: Once installed, these lag screws form secure, semi-permanent bonds resistant to loosening over time.

Why Choose Our Bulk Lag Screws?

• Bulk Discounts: Ideal for marine professionals, contractors, and large-scale projects seeking volume savings.
• Wholesale Availability: Perfect for B2B customers needing substantial quantities over time.
• Quality Material: 316 (A4) stainless steel ensures superior corrosion resistance and long-term strength in harsh conditions.
• Versatile Use: Suitable for marine construction, chemical processing facilities, decking, heavy outdoor structures, and more.

Proper Pilot Holes and Installation Tips

Selecting the correct pilot hole size is crucial for preventing wood splitting and ensuring maximum holding power. For detailed guidance, refer to our Lag Bolt Pilot Hole Size Blog.

• Pre-Drilling: Follow recommended pilot hole sizes for best results.
• Use Proper Tools: An impact driver or wrench is best. Avoid over-tightening to prevent head or thread damage.
• Ensure Correct Alignment: Drill pilot holes carefully and straight to achieve maximum holding power and proper installation.

Product Specifications

• Diameter: 3/4"
• Thread Pitch: ~4.5 TPI (Coarse Thread)
• Head Style: Hexagonal Head for easy driving
• Material: 316 (A4) Stainless Steel
• Standards Compliance: Meets common industry standards for lag screws

Ideal Applications

• Marine Construction: Perfect for docks, piers, and other saltwater-exposed structures.
• Chemical Processing: Ideal for environments where chemical exposure demands top-tier corrosion resistance.
• Outdoor Installations: Great for large decks, heavy fencing, and substantial garden structures.
• Heavy Construction: Excellent for projects requiring maximum holding power and long-term reliability in challenging conditions.

Buy in Bulk and Build with Confidence

Choose our 3/4"-4.5 Hex Lag Screws in 316 (A4) stainless steel for secure, durable connections in the toughest environments. With bulk and wholesale pricing, Monster Bolts provides top-quality marine-grade fasteners that stand the test of time. For advice on correct pilot hole sizes, be sure to explore our Lag Bolt Pilot Hole Size Blog.

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