Stainless Steel Wood Lag Screw Hex head

Head Type: Hex Head
Material: Stainless Steel
Length: From 30mm-400mm
Head Dia: M8 (12.8mm), M10 (15.8mm), M12 (18mm), M16 (23.8mm)
Head Height: M8 (5.5mm), M10 (6.5mm), M12 (7.5 mm), M16 (10mm)
Drill Capacity: Pre-Drilled Timber
Driver Type: Hex Socket – M8 (13mm), M10 (17mm), M12 (19mm), M16 (24mm)

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Lag screws, also known as lag bolts, are used in wood construction for heavier load applications than most wood screws can support. Lag screws can also use a nut to add extra strength and security when holding things together. Once one is installed, it takes a brunt of the weight and removes it from the structure itself. You’ll often see lag screws in solar installations, on patios, decking and other construction uses.


To install Lag screws, the first step is to make sure that all of the materials involved in the application are aligned. To keep the materials in place once they are aligned, use clamps to hold. Once everything is secure, drill a pilot hole using a bit with a slightly smaller diameter than the lag screw that will be used. When drilling the hole, make sure to drill all the way through the area where the screw will eventually be.

General Applications

Because pressure-treated exterior wood is corrosive, lag screws have a corrosion-resistant coating. They are hot-dipped in zinc, or are made of stainless steel. Lag screws Ideal for use in:

  • Solar Panel Installation
  • Glazing, Curtain Wall and Window Wall
  • Marine Structures
  • Automotive Applications
  • Robotics and Automation
  • Water Treatment Plants
  • Construction
  • Wind Energy
  • Manufacturing
  • Any Outdoor Application

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