SPAX® Hex Washer Head PowerLags® Screw, HCR® coating

Choose SPAX Hex Washer Head PowerLags Screw for maximum driver engagement, especially when using larger diameter/longer length parts in harder wood species. Great for exterior structural wood-to-wood fastening. Available in 1/4", 5/16", 3/8" and 1/2" diameters, and in lengths up to 12". SPAX HCR Coating is approved for use in treated lumber. Buy SPAX® Hex Washer Head PowerLags® Screws in bulk pails from wholesalers, dealers, and specialty distributers or in job-friendly package quantities (hex driver included) at retail hardware and home improvement stores.

Base Part No.: 357182() and 457182()

SPAX 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 HCR coating options for use in interior and exterior applications, including treated lumber.

•    No pre-drilling required (1/4" and 5/16")
•    Grade 5 durability
•    Code listings ICC-ES ESR-1782
•    Independently tested and approved DrJ Technical Evaluation Reports (TER No. 1711-01; Deck Ledger Attachment)
•    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

Choose SPAX PowerLags structural wood to wood screws with built-on washer design on your project. Request a sample pack of SPAX PowerLags today and build strong connections on the job site.

For CAD documents, please see Technical Documents.

Size Drive/Bit Size Thread Available Pkg. Options
Retail Pax Large Retail Pax 1 lb. Box 3 lb. Box 5 lb. Box Individual Project Pax Contractor Pax Bulk Pail
1/4" x 1-1/2" 3/8" Hex Partial 1+
1/4" x 2" 3/8" Hex Partial 1+ 12 50 500
1/4" x 3" 3/8" Hex Partial 1+ 12 50 500
1/4" x 5" 3/8" Hex Partial 1+ 12 50 500
1/4" x 6" 3/8" Hex Partial 1+ 12 50 250
5/16" x 3" 7/16" Hex Partial 1+ 50 250
5/16" x 3-1/2" 7/16" Hex Partial 1+ 50 250
5/16" x 4" 7/16" Hex Partial 1+ 12 50 250
5/16" x 5" 7/16" Hex Partial 1+ 12 50 250
3/8" x 5" 1/2" Hex Partial 1+ 25 150
3/8" x 6" 1/2" Hex Partial 1+ 25 150
1/2" x 5" 5/8" Hex Partial 1+ 25 100
1/2" x 6" 5/8" Hex Partial 25 100
1/2" x 8" 5/8" Hex Partial 1+ 100
1/2" x 10" 5/8" Hex Partial 1+ 100
1/2" x 12" 5/8" Hex Partial 100
PDF Icon Quick Reference Guide - SPAX POWERLAGS () PDF Icon PowerLags Hex Washer Head Drawing Chart (3 MB) PDF Icon SPAX PowerLags Brochure Form S-1600 Rev6-18 (2 MB) PDF Icon ICC-ES_Report_ESR-1782 () PDF Icon TER 1711-01 Rev 10-29-2020 Deck Ledger Attachment Using SPAX PowerLags () PDF Icon SPAX Technical Bulletin Deck Ledger Attachment Form S-1803 Rev 6-18 (547 KB) PDF Icon DrJ TER No. 1910-05 Fastener Steel Side Plate Application () PDF Icon 1/4”(.250) Washer Head Hex PowerLags 2-D Screw Size Reference Drawing (PDF) () PDF Icon 1/4”(.250) Washer Head Hex PowerLags Full Scale CAD Files (PDF) () PDF Icon 1/4”(.250) Washer Head Hex PowerLags Full Scale CAD Files (DWG) () PDF Icon 1/4”(.250) Washer Head Hex PowerLags Full Scale CAD Files (DXF) () PDF Icon 5/16”(.312) Washer Head Hex PowerLags 2-D Screw Size Reference Drawing (PDF) () PDF Icon 5/16”(.312) Washer Head Hex PowerLags Full Scale CAD Files (PDF) () PDF Icon 5/16”(.312) Washer Head Hex PowerLags Full Scale CAD Files (DWG) () PDF Icon 5/16”(.312) Washer Head Hex PowerLags Full Scale CAD Files (DXF) () PDF Icon 3/8”(.375) Washer Head Hex PowerLags 2-D Screw Size Reference Drawing (PDF) () PDF Icon 3/8”(.375) Washer Head Hex PowerLags Full Scale CAD Files (PDF) () PDF Icon 3/8”(.375) Washer Head Hex PowerLags Full Scale CAD Files (DWG) () PDF Icon 3/8”(.375) Washer Head Hex PowerLags Full Scale CAD Files (DXF) () PDF Icon 1/2”(.500) Washer Head Hex PowerLags 2-D Screw Size Reference Drawing (PDF) () PDF Icon 1/2”(.500) Washer Head Hex PowerLags Full Scale CAD Files (PDF) () PDF Icon 1/2”(.500) Washer Head Hex PowerLags Full Scale CAD Files (DWG) () PDF Icon 1/2”(.500) Washer Head Hex PowerLags Full Scale CAD Files (DXF) ()
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