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
•    IRC / IBC Code Compliant DrJ TER No. 1912-07 Structural Fastener Properties
•    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.

SizeDrive/Bit SizeThreadAvailable Pkg. Options
Retail PaxLarge Retail Pax1 lb. Box3 lb. Box5 lb. BoxIndividualProject PaxContractor PaxBulk Pail
1/4" x 1-1/2"3/8" HexPartial1+
1/4" x 2"3/8" HexPartial1+1250500
1/4" x 3"3/8" HexPartial1+1250500
1/4" x 5"3/8" HexPartial1+1250
1/4" x 6"3/8" HexPartial1+1250250
5/16" x 3"7/16" HexPartial1+50250
5/16" x 3-1/2"7/16" HexPartial1+50250
5/16" x 4"7/16" HexPartial1+1250250
5/16" x 5"7/16" HexPartial1+1250250
3/8" x 5"1/2" HexPartial1+25150
3/8" x 6"1/2" HexPartial1+25150
1/2" x 5"5/8" HexPartial1+25100
1/2" x 6"5/8" HexPartial25100
1/2" x 8"5/8" HexPartial1+100
1/2" x 10"5/8" HexPartial1+100
1/2" x 12"5/8" HexPartial100
PDF Icon PowerLags - Hex Head - HCR - Specification Sheet (1 MB) PDF Icon SPAX Bit Center Options (318 KB) PDF Icon DrJ TER No. 1912-07 POWERLAGS Fastener Properties 4-15-2021 (753 KB) PDF Icon DrJ TER 1711-01 Rev 3-18-2021 Deck Ledger Attachment Using SPAX PowerLags (1 MB) PDF Icon SPAX Technical Bulletin Deck Ledger Attachment Form S-1803 Rev 6-18 (547 KB) PDF Icon 1/4”(.250) Washer Head Hex PowerLags 2-D Screw Size Reference Drawing (PDF) (266 KB) PDF Icon 1/4”(.250) Washer Head Hex PowerLags Full Scale CAD Files (PDF) (114 KB) PDF Icon 1/4”(.250) Washer Head Hex PowerLags Full Scale CAD Files (DWG) (183 KB) PDF Icon 1/4”(.250) Washer Head Hex PowerLags Full Scale CAD Files (DXF) (764 KB) PDF Icon 5/16”(.312) Washer Head Hex PowerLags 2-D Screw Size Reference Drawing (PDF) (263 KB) PDF Icon 5/16”(.312) Washer Head Hex PowerLags Full Scale CAD Files (PDF) (103 KB) PDF Icon 5/16”(.312) Washer Head Hex PowerLags Full Scale CAD Files (DWG) (141 KB) PDF Icon 5/16”(.312) Washer Head Hex PowerLags Full Scale CAD Files (DXF) (528 KB) PDF Icon 3/8”(.375) Washer Head Hex PowerLags 2-D Screw Size Reference Drawing (PDF) (263 KB) PDF Icon 3/8”(.375) Washer Head Hex PowerLags Full Scale CAD Files (PDF) (96 KB) PDF Icon 3/8”(.375) Washer Head Hex PowerLags Full Scale CAD Files (DWG) (118 KB) PDF Icon 3/8”(.375) Washer Head Hex PowerLags Full Scale CAD Files (DXF) (400 KB) PDF Icon 1/2”(.500) Washer Head Hex PowerLags 2-D Screw Size Reference Drawing (PDF) (261 KB) PDF Icon 1/2”(.500) Washer Head Hex PowerLags Full Scale CAD Files (PDF) (100 KB) PDF Icon 1/2”(.500) Washer Head Hex PowerLags Full Scale CAD Files (DWG) (121 KB) PDF Icon 1/2”(.500) Washer Head Hex PowerLags Full Scale CAD Files (DXF) (438 KB)