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June 12, 2023

All the Power You Need: SPAX® PowerLags®

Tired of the average lag bolts? Only SPAX® offers the largest selection of code-recognized structural wood-to-wood fasteners in the industry with features that appeal to professional contractors and weekend DIY’ers.

HIGH PERFORMANCE & HIGH VALUE POWERLAGS®

SPAX® PowerLags® and PowerLags® for Log Homes and Timber Frame Construction feature an unparalleled level of fastening efficiency, reliability and value for structural wood assemblies and heavy carpentry.

WHAT MAKES POWERLAGS THE IDEAL REPLACEMENT FOR THE CONVENTIONAL LAG?

SPAX engineered PowerLags make better connections, save you time, money and increase the quality of your project.

PRODUCT FEATURES THAT INCREASE INSTALLATION SPEED

  • No pre-drilling required for faster, easier installation
  • Built-on washer head design eliminates the need and extra cost of a separate washer
  • Patented thread serrations require up to 40% less driving torque and help to prevent cracking in logs
  • Superior tensile strength and pull-out values

PRODUCT FEATURES THAT SATISFY BUILDING INSPECTORS

  • IRC / IBC Code Compliant (DrJ TER No. 1912-07) Structural Fastener Properties
  • Technical Evaluation Report
    • DrJ TER - No. 1711-01 (Deck Ledger attachment)
    • TER No. 1802-03 (Multi-Ply; LVL Beams, Girder Truss Applications)
  • Heat treated to Grade-5 durability
  • Fastener length stamp on the head provides convenient identification without measuring and aids on-site inspections
  • Available HCR® Coating is IRC / IBC Code Compliant for use in treated lumber and exterior exposure condition 3 (general construction)

SPAX PowerLags are available in 1/4", 5/16", 3/8" and 1/2" diameters in lengths up to 12" and they are sold in job-friendly package quantities, including Bulk Pails. Compare the performance and value of American-made SPAX PowerLags, request a sample or find where you can buy PowerLags at a retail home improvement store or lumber and building material dealer near you. For more performance specifications and information or to sell SPAX engineered fasteners, contact us to become a dealer.
Choose SPAX to Amplify Your Craft™.

SPAX Factor™

SPAX® Delivers the Highest Structural Values in the Industry


Spax Factor
Innovation in Every Inch

Powerlags® for strong wood-to-wood connections

German engineered and American made, SPAX® PowerLags® are professional grade structural screws, the superior and preferred choice over conventional lag screws/bolts.

POWERLAG Diagram Black 01
No Pre-Drilling

No pre-drilling required (1/4" and 5/16")

Durable

Heat treated for strength and durability

Tested & Certified

Independently tested DrJ Engineering Technical Evaluation Reports.

Increased Installation Speeds

Patented thread serrations require up to 40% less driving torque to increase installation speed while helping prevent cracking in logs.

Built-On Washer Head

Built-on washer head designs eliminate the need and extra cost of a separate washer.

Convenient Identification

Fastener length stamp on the head provides convenient identification without measuring and aids on-site inspections.

Related Products

T-STAR WASHER HEAD HCR® POWERLAGS® icon
Exterior
PowerLags®
T-STAR WASHER HEAD HCR® POWERLAGS®

SPAX® T-STAR Washer Head PowerLags® with HCR® coating designed with low-profile, large diameter head design provides outstanding clamping force and improved aesthetics. The T-STAR drive offers excellent bit engagement without requiring a special driver bit. Available in 1/4”, 5/16”, and 3/8” diameters. SPAX HCR® Coating is approved for use in treated lumber.

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T-STAR WASHER HEAD YELLOW ZINC POWERLAGS® icon
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T-STAR WASHER HEAD YELLOW ZINC POWERLAGS®

SPAX® T-STAR Washer Head PowerLags® with yellow zinc coating designed with low-profile, large diameter head design provides outstanding clamping force and improved aesthetics. The T-STAR drive offers excellent bit engagement without requiring a special driver bit. Available in 1/4”, 5/16”, and 3/8” diameters.

1/4"5/16"3/8"
HEX HEAD HCR® POWERLAGS® icon
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HEX HEAD HCR® POWERLAGS®

SPAX® Hex Washer Head PowerLags® with HCR® coating are intended for wood to wood connections in exterior structural applications. These fasteners are designed with a hex head conventional driver system along with a built in washer for applications requiring superior pull-down force. Often used in high torque applications.

1/4"5/16"3/8"1/2"
HEX HEAD ZINC POWERLAGS® icon
Interior
PowerLags®
HEX HEAD ZINC POWERLAGS®

SPAX® Hex Washer Head PowerLags® with zinc coating are intended for wood to wood connections in interior structural applications. These fasteners are designed with a hex head conventional driver system along with a built in washer for applications requiring superior pull-down force. Often used in high torque applications.

1/4"5/16"3/8"1/2"
T-STAR WASHER HEAD BLACK eCOAT icon
Interior
PowerLags®
T-STAR WASHER HEAD BLACK eCOAT

SPAX® T-STAR Washer Head PowerLags® with black eCoat coating bring a new level of fastening efficiency and reliability to log home and timber frame construction. SPAX® patented thread serrations eliminate pre-drilling and dramatically increase installation speed. They are also code listed and load rated, so you can be assured of the reliability of the assembly. The two head styles available offer job-matched performance and aesthetics.

5/16"
T-STAR PANCAKE HEAD BLACK eCOAT icon
Interior
PowerLags®
T-STAR PANCAKE HEAD BLACK eCOAT

SPAX® Pancake Head PowerLags® with black eCoat coating bring a new level of fastening efficiency and reliability to log home and timber frame construction. SPAX® patented thread serrations eliminate pre-drilling and dramatically increase installation speed. They are also code listed and load rated, so you can be assured of the reliability of the assembly. The two head styles available offer job-matched performance and aesthetics.

5/16"

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Examine our products up close before you buy. Just locate a SPAX seller near you or order online today.
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