Log Home 1
Log Homes Application

Log Home Timber Screws and Fasteners

Craft sturdy and enduring log homes efficiently with SPAX fasteners, ensuring precision and durability in every joint.



Building a Log Home

Log Home building has evolved through years of construction changes. There are many different types of fasteners used for the installation of log walls. These types of fastening systems included spikes, lag screws, threaded rods and specialty spring systems.


SPAX® manufactures Log and Timber PowerLags® specifically for the log home construction. This product carries many features to assist in the building of these unique style homes. The patented serrated threading allows the Log and Timber PowerLags® to require no pre-drilling. This feature speeds the installation process to reduce time and labor costs. SPAX® offers the product in 2 distinct head styles that both have a T-STAR internal drive system. This drive system has 6 points of bit engagement to eliminate drive stripping and provides product confidence. The coating system is an epoxy coating that offers corrosion resistance from moisture during the construction phase. The unique black color also provides quick identification to spacing requirements for installation. SPAX® heat treats these high quality steel to match structural connections needed for strength to the structural wall. SPAX® offers these products in the largest portfolio of lengths available for the majority of log profiles in the market today.

SPAX® Log and Timber PowerLags® are proudly made in the USA.

Code Tested & Approved:

TER No. 1912-07 Structural Wood Fastener Properties Report

We've Got You Covered

Find the right screw or fastener for your next job with the largest variety of diameters, lengths and head styles in the industry.

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SPAX Factor™

SPAX® Delivers the Highest Structural Values in the Industry

Spax Factor

Confidence Drilled Into Every Connection

Reduce pre-drilling and driving torque by up to 40% while still getting 100% quality and strength with our building code recognized PowerLags® which are unlike any other lag on the market.

SPAX is Independently Tested and Approved

DrJ Engineering TER reports use specialized testing and industry-approved evaluations to certify that products meet specific performance requirements of the appropriate sections of the appropriate building code. We follow ICC AC257 acceptance criteria for all exterior coated screws.

IRC applies to detached one-and-two family dwellings and townhouses not more than three stories.
Code compliant icon
Building Code
IBC applies to all buildings or structures that do not conform to the IRC.


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")


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.

Double Barrier Coating with PowerLags
2X the Protection

Our Double Barrier Coating

Our HCR® (High Corrosion Resistance) double-barrier coatings offer superior protection with a double barrier. First plated with a zinc base coat and finished with a durable top coat, they’re engineered to hold up to the harshest conditions. Tested and recognized for use in ground contact pressure treated lumber for exterior, freshwater general construction applications (e.g., AWPA UC1-UC4A, UCFA).


Some competitors don’t actually test their coatings. They rely on data from their paint company before it makes it onto their screws.

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