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SPAX Exterior Washer Head Structural Lag Screws with Bit

Altenloh, Brink & Co ★ 4.1/5 · ItemOracle Score Mid-Range

$44 USD
Price subject to change
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SPAX 5/16" x 4-1/2" Exterior Washer Head Structural Wood Lag Screws Powerlags Torx T-Star (50 EA) Bit Included Heavy Duty Rust Resistant

Washer head lag screws with T-Star drive for strong wood-to-wood connections. Includes bit and designed for exterior use with corrosion resistance and high draw-down strength

Highlights

  • low-profile washer head for sleek finish
  • 40% less driving torque
  • ICC-ES recognized for structural wood in exterior use

Pros

  • washing head design reduces need for separate washer
  • high draw-down strength for strong clamping
  • heat treated for durability
  • patented thread technology for faster driving
  • T-Star drive offers better bit engagement

Cons

  • prefers exterior/treated lumber applications
  • requires compatible power tool for best results
  • bit included may be limited to the pail

Best For

  • exterior deck joists
  • pressure-treated lumber connections
  • patio mounting and framing
  • structural wood-to-wood assemblies
  • areas needing reduced driving torque
  • projects requiring corrosion resistance

Features

  • T-Star washer head design provides strong clamping with less driving torque
  • Heat treated Grade 5 steel for enhanced durability and reduced breakage
  • Patented thread technology enables faster driving and reduces wood splitting
  • ICC-ES ESR-1783 listed for structural wood to wood exterior use
  • Torx T-Star 6-lobe drive offers compatible bit engagement for quicker installation

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