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SKU: LB4SS-516X4

5/16" x 4" Conquest Hex Head Lag Bolt for Wood - 18-8 Stainless Steel

5/16" x 4" Conquest Hex Head Lag Bolt for Wood - 18-8 Stainless Steel!

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Lag Bolts

Bolts

SKU: LB4SS-516X4

5/16" x 4" Conquest Hex Head Lag Bolt for Wood - 18-8 Stainless Steel

$0.75
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Ships Jul 20 when you order now

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Specifications

Diameter: 5/16"
Length: 4"
Thread Length: 2-1/2"
Thread Type: Coarse
Threads Per Inch: 9
Socket Size: 1/2"
Head Type: Hex Head
Material: 18-8 Stainless Steel
Finish: None
Measuring System: Standard SAE
Manufacturer Name: Conquest Fasteners
Quantity: 1
Description

5/16" x 4" Conquest Hex Head Lag Bolt for Wood - 18-8 Stainless Steel

This 5/16" x 4" stainless steel lag bolt provides superior depth for anchoring into thick framing lumber. Its coarse thread delivers dependable bite and pull resistance, and the stainless steel protects from moisture damage over time. A reliable choice for heavy-duty outdoor fastening jobs where precision and strength are non-negotiable.

5/16" x 4" Conquest Hex Head Lag Bolt – 5/16" Coarse Thread Stainless Steel Lag Bolt

Use this bolt when strength and depth are essential. It works especially well for mounting beams or securing components in load-bearing structures. The 4" length allows deeper engagement through thick assemblies, while the hex head ensures easy and accurate installation.

Key Features

  • 4" Shank Length: Supports long anchoring depth and structural hold.
  • Stainless Steel: Great for decks, posts, and moisture-exposed builds.
  • Hex Drive Head: Easy install with wrench or driver.
  • Thread Design: Coarse threading pulls tight and locks firm.

Common Applications

  • Structural timber framing
  • Deck ledger boards
  • Exterior wood-to-wood fastening
  • Large fence post assembly
  • Hardware anchoring

Installation Tips

  • Use a pilot hole to guide and reduce torque stress.
  • Ensure bolt aligns square with surface.
  • Drive flush, avoid countersinking unless required.

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
88%
(7)
13%
(1)
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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.