SKU: LB4SS-34X20

3/4" x 20" Conquest Hex Head Lag Bolt for Wood - 18-8 Stainless Steel

3/4" x 20" Conquest Hex Head Lag Bolt for Wood - 18-8 Stainless Steel!

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Lag Bolts

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SKU: LB4SS-34X20

3/4" x 20" Conquest Hex Head Lag Bolt for Wood - 18-8 Stainless Steel

$119.99
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Lengths:

1-1/2" 1-3/4" 2" 2-1/2" 3" 3-1/2" 4" 4-1/2" 5" 5-1/2" 6" 6-1/2" 7" 7-1/2" 8" 8-1/2" 9" 10" 11" 12" 14" 16" 1" 1-1/4" 2-3/4" 18" 20"

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Specifications

Diameter: 3/4"
Length: 20"
Thread Length: 6"
Thread Type: Coarse
Threads Per Inch: 4-1/2
Socket Size: 1-1/8"
Head Type: Hex Head
Material: 18-8 Stainless Steel
Finish: None
Measuring System: Standard SAE
Manufacturer Name: Conquest Fasteners
Quantity: 1
Description

3/4" x 20" Conquest Hex Head Lag Bolt for Wood - 18-8 Stainless Steel

This 3/4" x 20" Conquest Hex Head Lag Bolt for Wood - 18-8 Stainless Steel is the ultimate in deep-set fastening strength. With a coarse 4-1/2 thread pitch and massive 20" length, it drives deep through thick timber to lock in place. The 18-8 stainless build means it resists corrosion even when exposed year-round to weather or saltwater. It’s a powerhouse for retaining walls, pier structures, and commercial timber framing where depth and reliability matter most.

3/4" x 20" Conquest Hex Head Lag Bolt for Wood – 3/4" x 4-1/2 TPI Coarse Thread Stainless Steel Lag Bolt

Designed for industrial-level fastening, this bolt is your go-to for anchoring multiple wood layers or massive support beams. The coarse thread digs in quickly and holds firm under heavy load. Its length and corrosion resistance make it the preferred choice for high-load outdoor wood construction.

Key Features

  • 4-1/2 TPI Coarse Thread: Deep thread engagement for unshakable hold.
  • 20" Length: Longest standard size for ultra-deep structural fastening.
  • Stainless Steel Construction: Withstands corrosion from water, salt, and air.
  • 3/4" Diameter: Ideal for critical-load support.

Common Applications

  • Heavy-duty pier and dock anchoring
  • Multi-layered timber frameworks
  • Deep-set beam connections
  • Retaining and foundation walls
  • Structural wood bracing

Installation Tips

  • Pre-drill full-depth to prevent thread galling and friction stall.
  • Use impact-rated drivers or wrenches for controlled seating.
  • Verify alignment and seating depth with long-length bolts.

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 8 reviews
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W
William D. Mccasland
Great job

Needed screws to mount 2 ceiling fans to a beam. Got here quick and exactly what I needed.

D
Douglas Zimmerman
Stainless Lag Screw Review

I needed an uncommon size, and Fasteners Plus had just what I needed. It was quickly delivered, and the order was accurate, and the quality was excellent.

K
Kevin Hall
Small order

I was very satisfied with the lag screws I purchased. My only issue with Fastners + is with the standard shipping cost. Unless I order a large quantity, the shipping cost charged is exorbinate.