Products > LOK Line - Structural Wood Fasteners > HeadLOK Heavy Duty Flathead Fastener
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HeadLOK is a heavy duty flathead wood screw that does it all and won’t countersink. HeadLOK offers higher design shear than 3/8" lag screws…and no predrilling is needed! HeadLOK zips right in and is ideal for many wood-to-wood applications including decks, fences, SIPs, kitchen cabinets and more.

  • Stronger design shear values than 3/8" lags
  • Sharp gimlet point for fast installation into wood and OSB
  • Aggressive thread for holding and withdrawal strength
  • Free SpiderDrive™ bit in every package
  • Available Options
  • Installation Instructions
  • Technical Data
  • Product Warranty Information
  • Related FM Products
Fastener Lengths:2 7/8", 2" SpiderDrive™ Bits, 4 1/2", 5", 5 1/2", 6 1/2", 6", 7", 7 1/2", 8", 8 1/2", 9", 9 1/2", 10", 11", 12", 13", 14", 15", 16", 18"
Packaging Size:2 pc carded driver bits, 12 pc clamshell, 50 pc box, 250 pc bucket, 500 pc bucket
Weight: lb

HeadLOK should be installed Using a ½" high torque drill (18V Cordless or higher), drive the HeadLOK head flush to the surface. No predrilling required when proper end and edge distances are maintained.

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