LedgerLOK Structural Wood Screw

LedgerLOK is a code-compliant structural wood screw engineered to fasten a deck ledger board to the rim joist of a house with no predrilling.


LedgerLOK Deck Ledger to Rim Board Connection

Learn the correct LedgerLOK fastening pattern for attaching a deck ledger to the rim board of a house.

Deck Ledger tech bulletin

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LedgerLOK vs. 1/2" Lag Screws

This comparison video demonstrates time saved using the LedgerLOK Structural Wood Screw in place of lags when connecting a deck ledger to the rim joist of a house.

Lag and Through-Bolt Replacement

LedgerLOK replaces lag screws and through-bolts, has been coated with a proprietary three-step coating process that protects against corrosion (even in pressure treated wood) and is ACQ approved.


  • The built-in washer head eliminates the need for an additional washer, saving time and money.
  • The large hex-head allows for greater bit engagement, reducing cam-out.

Code Compliant Connection

LedgerLOK is tested and supported by engineering data that conforms to the most current ICC standards. It is also approved for use in ACQ or treated lumber.

For technical documentation of all our structural wood screws, see our Technical Resources page.