Hex Washer Head Zinc PowerLags®


SPAX® PowerLags® offer the largest selection of code-recognized structural wood-to-wood fasteners in the industry. Featuring SPAX® patented thread technology, they require no pre-drilling, and drive faster and easier than conventional lags and other structural lag screws. Available in hex head with zinc coating for use in interior applications.

  • No pre-drilling required (1/4" and 5/16")
  • Grade 5 durability
  • Code listings ICC-ES ESR-1782
  • Patented thread serrations require up to 40% less driving torque to increase installation speed while helping prevent cracking in logs
  • Built-on washer head designs eliminate the need and extra cost of a separate washer
  • Fastener length stamp on the head provides convenient identification without measuring and aids on-site inspections
  • Sold in job-friendly package quantities, including bulk pails (Hex driver included)

Hex Washer Head
Provides maximum driver engagement, especially when using larger diameter/longer length parts in harder wood species. Available in ¼”, 5/16”, 3/8” and ½” diameters, and in lengths up to 10”. 

Base Part No.: 357101() and 457101()

For CAD documents, please see Technical Documents.

SizeDrive/Bit SizeThreadAvailable Pkg. Options
Sm. PlasticLg. Plastic1 lb. Box3 lb. Box5 lb. BoxPer PieceContractor PackBulk PailProject PAX
1/4" x 2"3/8" HexPartial1+50500
1/4" x 3"3/8" HexPartial1+50500
1/4" x 3-1/2"3/8" HexPartial1+50500
1/4" x 4"3/8" HexPartial1+50500
1/4" x 4-1/2"3/8" HexPartial1+50500
1/4" x 5"3/8" HexPartial1+50500
1/4" x 6"3/8" HexPartial1+50500
5/16" x 3"7/16" HexPartial50250
5/16" x 4"7/16" HexPartial1+50250
3/8" x 5"1/2" HexPartial1+25150
3/8" x 6"1/2" HexPartial1+25150
3/8" x 8"1/2" HexPartial1+150
1/2" x 5"5/8" HexPartial1+25100
1/2" x 6"5/8" HexPartial1+25100
1/2" x 8"5/8" HexPartial100
1/2" x 10"5/8" HexPartial100
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