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SKU: LBHDG-58X20

5/8" x 20" Conquest Hex Head Lag Bolt for Wood - Hot Dip Galvanized

5/8" x 20" Conquest Hex Head Lag Bolt for Wood - Hot Dip Galvanized!

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Lag Bolts

Bolts

SKU: LBHDG-58X20

5/8" x 20" Conquest Hex Head Lag Bolt for Wood - Hot Dip Galvanized

$14.99
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Ships Sep 28 when you order now

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Specifications

Diameter: 5/8"
Length: 20"
Thread Length: 6"
Thread Type: Coarse
Threads Per Inch: 5
Socket Size: 15/16"
Head Type: Hex Head
Material: Carbon Steel
Finish: Hot Dip Galvanized
Measuring System: Standard SAE
Manufacturer Name: Conquest Fasteners
Quantity: 1
Description

5/8" x 20" Conquest Hex Head Lag Bolt for Wood - Hot Dip Galvanized

The 5/8" x 20" Conquest Lag Bolt is one of the longest outdoor-grade bolts available, built to secure massive timber assemblies under the harshest outdoor conditions. The coarse threading bites deep, while the hot dip galvanized finish protects for the long haul.

5/8" x 20" Conquest Hex Head Lag Bolt – Ultra-Deep Galvanized Bolt for Timber Structures

This bolt is the go-to choice when deep, high-load fastening is needed for structural beams, retaining walls, or timber frameworks exposed to the elements.

Key Features

  • 20" Length: Maximum depth for full timber engagement.
  • Hot Dip Galvanized: Superior corrosion defense for all-weather builds.
  • Hex Head: Standard size for easy installation with power tools.
  • 5 TPI Threads: Ensures lasting grip and anti-loosening security.

Common Applications

  • Structural framing in large outdoor buildings
  • Deep beam-to-post anchoring
  • Heavy timber retaining systems
  • Bridge and platform reinforcement
  • Oversized fencing and framing assemblies

Installation Tips

  • Use a full-depth pilot hole for clean threading and easier drive.
  • Use a high-powered driver to ensure steady, aligned installation.
  • Flush seating ensures long-term stability and joint strength.

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 26 reviews
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(26)
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C
Cari Dodson
Received on time!

Ordered these late, and under pressure, but received on time! Note that you need a 3/4 socket and it's not typical in most sets.

M
Michelle

This item worked well for its intended purpose of mounting and securing a wood mantle.

N
Nick Supe
Great Lags

I like using these to attach deck ledger boards