SPAX PowerLags—Engineered To Do More

The ideal replacement for conventional lags—SPAX® PowerLags® set the bar for structural wood-to-wood connections. Buy less, do more with the highest withdrawal and pull-through values in the industry. SPAX PowerLags, code recognized for deck ledger attachment, require up to 50% fewer fasteners for installation than competing structural screws.

SPAX powerlags

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PowerLags are engineered from head to tip to help you save labor time, and drive stronger, longer-lasting results and move onto your next job faster.

  • Zero pre-drilling required* (1/4″ and 5/16″)
  • Up to 40% less driving torque to increase installation speed while helping prevent cracking in logs thanks to patented thread serrations
  • Eliminate the need and extra cost of a separate washer with built-on washer head designs
  • Convenient identification without measuring and aids on-site inspections with fastener length stamped on the head of each fastener
  • Reduced stripping with T-Star drive
  • Heat treated grade 5 durability

PowerLags are also the largest selection of code-recognized structural wood-to-wood screws for framing in the industry. The structural fasteners are IRC / IBC Code Compliant DrJ TER No. 1912-07 Properties Report and Independently tested and approved DrJ Technical Evaluation Reports (TER No. 1711-01; Deck Ledger Attachment and TER No. 1802-03; Multi-Ply; Sawn lumber assemblies and engineered wood – LVL, PSL and LSL assemblies).

Get SPAX PowerLags in bulk from wholesalers, dealers and specialty distributors or in project-appropriate package sizes at retail hardware and home improvement stores.


*Note: Lead holes of 11/64″ (.172″) diameter are required for 3/8″ and 13/64″ (.203″) diameter for 1/2″

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