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SKU: LBHDG-516X312

5/16" x 3-1/2" Conquest Hex Head Lag Bolt for Wood - Hot Dip Galvanized

5/16" x 3-1/2" Conquest Hex Head Lag Bolt for Wood - Hot Dip Galvanized!

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Lag Bolts

Bolts

SKU: LBHDG-516X312

5/16" x 3-1/2" Conquest Hex Head Lag Bolt for Wood - Hot Dip Galvanized

$0.61
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Ships Jun 22 when you order now

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Specifications

Diameter: 5/16"
Length: 3-1/2"
Thread Length: 2-1/4"
Thread Type: Coarse
Threads Per Inch: 9
Socket Size: 1/2"
Head Type: Hex Head
Material: Carbon Steel
Finish: Hot Dip Galvanized
Measuring System: Standard SAE
Manufacturer Name: Conquest Fasteners
Quantity: 1
Description

5/16" x 3-1/2" Conquest Hex Head Lag Bolt for Wood - Hot Dip Galvanized

The 5/16" x 3-1/2" Conquest Lag Bolt is engineered for outdoor applications that require extended reach and robust grip. Its hot dip galvanized finish offers dependable corrosion resistance, and the coarse threading secures it firmly into wood. It’s ideal for treated lumber or moisture-exposed framing.

5/16" x 3-1/2" Conquest Hex Head Lag Bolt – Long Galvanized Bolt for Structural Outdoor Use

This bolt is well-suited for larger timber joints, fence post support, or outdoor framing where deep penetration and long-term hold are key. A professional-grade fastener for demanding builds.

Key Features

  • 3-1/2" Length: Provides additional anchoring depth in thicker wood.
  • Hot Dip Galvanized: Withstands rust and chemical exposure.
  • Hex Head: Compatible with common fastening tools.
  • 9 TPI Coarse Threads: Delivers fast threading and superior hold.

Common Applications

  • Heavy garden structures
  • Fence post connections
  • Deck stair framing
  • Outdoor furniture joints
  • Patio supports

Installation Tips

  • Use a pilot hole to guide threading and reduce torque demand.
  • Drive slowly and consistently to avoid stripping.
  • Ensure full seating for structural integrity.

California Residents: WARNING

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Lag Bolts

Bolts

× WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects and other reproductive harm. For more information visit: www.P65Warnings.ca.gov.

Customer Reviews

Based on 24 reviews
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(24)
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N
Nick Supe
Great Lags

I like using these to attach deck ledger boards

A
ACRA CAST MAINTENANCE
Great Purchase will buy again!

Our Production had literally come to a complete halt, because we were out of these and (surprise) our vendor was too!!!
We were extremely fortunate to have found you and the wealthy inventory you have!! We are excited to now have your company as our new and only provider of these fasteners!

J
Jose Olvera
Great service

Very fast and great service and prices