SPAX Sets the Bar
CONFIDENCE DRILLED INTO EVERY CONNECTION

STRENGTH. SPEED. VERSATILITY.

We have one purpose—enhance your performance. Help you create stronger connections. Maximize your speed with every drive. 


SPAX® is the common denominator that plays well with virtually every material and project type. From our unique 4CUT™ point technologies to our exclusive T-STAR plus drive, every inch of our construction screws and fasteners is German-engineered to work harder for you.


Once you try SPAX Engineered Fasteners, you won’t settle for anything else.

SPAX® Engineered Fasteners are the most Advanced Product on the Market

Our fasteners strength and job site efficiency innovations will provide you with the power to keep your projects connected stronger for longer. Featuring SPAX® patented thread technology, they require no pre-drilling, and drive faster and easier than conventional lags and other structural lag screws.

TSTA Rplus FH HCRX 4 CUT
Unique 4Cut™ Point
Prevents splitting and requires no pre-drilling in wood.
TSTA Rplus FH HCRX Serrations
Patented Serrations
Allow for quicker, easier fastening. U.S. Patent No. 7,101,133
TSTA Rplus FH HCRX Multi Head
Patented MULTI-Head
Countersinks screw head in wood and breaks on metal​. U.S. Patent No. 7,334,976
TSTAR FH HCRX Head Cutaway with Bit
T-STAR plus Drive
"The PRO's Choice" drive system provides superior bit engagement, eliminating camming out and facilities overhead driving.
Coating with Icon
Advanced Corrosion Resistance
“HCR-X™” coating is tested and recognized for use in ground contact pressure treated lumber for exterior, freshwater general construction applications.
Code compliant icon
Comprehensive Product Testing
Specialized testing and industry-approved evaluations certify our products meet specific performance requirements.
Contractor Multi Material with SPAX Factor Logo
#SPAXFACTOR

THE SPAX FACTOR™

For the craftsman that concentrates on the details, we work for you.  For the pro that puts quality first, we help you create stronger connections.

THE SPAX FACTOR™ is a simple formula for working smarter.  To multiply results and reduce effort – just add SPAX.

Innovations for Every Project

Our broad selection of high-quality engineered fasteners will get the job done.

Power Lag Features
Structural PowerLags®

The perfect solution for structural exterior and interior wood-to-wood connections.

  1. T-STAR head for reduced stripping
  2. Built-on washer offers outstanding clamping force with a low profile for improved aesthetics
  3. Patented thread serrations require 40% less torque with zero pre-drilling
  4. HCR® Coating is IRC/IBC code compliant for use in treated lumber and exterior exposure condition 3 (general construction)
  5. Heat-treated Grade 5 durability

Watch Video

Shop All Structural Powerlag® Fasteners

Multi Material Features Simplified
Multi-Material

For a wide range of construction applications including wood, concrete, masonry, sheet metal and plastic.

  1. T-STAR plus head provides superior bit engagement at nearly any angle
  2. Patented MULTI-Head provides flush countersink finish in wood
  3. Patented serrations require 40% less torque with zero pre-drilling
  4. 4CUT™ point prevents board splitting
  5. Heat-treated Grade 5 durability

Watch Video

Shop All Multi-Purpose Fasteners

MDF Features
MDF/Hardwood

Specifically designed to prevent splitting in Medium Density Fiberboard and hardwoods without pre-drilling .

  1. Trim head with cutting ribs facilitates a flush or countersunk installation for desired aesthetics.
  2. T-STAR plus trim head provides superior bit engagement at nearly any angle
  3. Patented serrations allow for quicker, easier fastening
  4. Unique CUT™ Point prevents board splitting and requires no pre-drilling
  5. Heat-treated Grade 5 durability

Shop All MDF/Hardwood Fasteners

Stainless steel diagram
POWERDECK® Stainless Steel

For unmatched pulling power and perpetual hold.  SPAX® 304 series stainless steel offers premium corrosion resistance for coastal environments and use in redwood & cedar.

  1. Countersinking head ensures a flush fit
  2. T-STAR plus trim head provides superior bit engagement at nearly any angle
  3. Double ThreadLok™ pulls and holds boards tight
  4. Patented serrations require 40% less torque with zero pre-drilling
  5. Unique 4CUT™ Point prevents board splitting
  6. 304 stainless steel offers premium corrosion resistance

WATCH VIDEO

SHOP ALL POWERDECK

made in usa

Do you Know Where Your Fasteners Were Made?

While most of our competitors ship screws in from overseas, we continuously innovate and make our fasteners from the heart of America to reimagine what structural connections should be. That means our products are ready to deliver and stock right now from our Ohio HQ to our neighbors across the U.S.

SPAX

manufactured
in Bryan, OH

90%
of structural
wood-to-wood
fasteners
are manufactured overseas
HEAT TREATED - GRADE 5 DURABILITY

Optimal rigidity, malleability, and material strength

Proprietary heat treatment process optimizes each fasteners shear strength without breakage.

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.

Residential
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.
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).

DID YOU KNOW?

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

Salt Spray Testing
B117 SALT SPRAY CORROSION TESTING

Tested Beyond the Norm

We test and inspect beyond all standards to deliver exceptional structural support—from head to point. Push past what’s expected with time-tested confidence in every connection.

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

Grade 5 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.

American-made, rigorously inspected, built for strength

40% Less Torque Needed

Compared to traditional lags.

multi-material construction screws engineered for versatility

Multi-Material Flat Head Construction Fasteners

German engineered and American made, SPAX® Multi-Material Engineered Construction Fasteners are professional grade and designed to make strong connections - the first time.

Multi Material FH YZ Diagram
TSTA Rplus FH YZ Head Cutaway
T-STAR plus Drive

"The PRO's Choice" drive system provides superior bit engagement, eliminates camming out and facilitates overhead driving.

TSTA Rplus FH YZ Multi Head
Patented MULTI-Head

Countersinks screw head flush with material.

TSTA Rplus FH YZ Serrations
Patented Serrations

Allow for quicker, easier fastening.

TSTA Rplus FH YZ 4 CUT
Unique 4CUT™ Point

Prevents splitting and requires no pre-drilling in wood.

4CUT™ POINT

PREVENTS SPLITTING

Zero pre-drilling, saving time and hassle.

Shaped like an arrow, the four edges displace the wood fibers upon insertion and thus create space for the core diameter of the screw.

American-made, rigorously inspected, built for strength

SPAX® Sets the Bar EVERY DAY!

Once you try SPAX Engineered Fasteners, you won’t settle for anything else.

Green Box Guarantee
Greenbox Guarantee

Not All Fasteners Are Created Equal

Our Green Box Guarantee ensures honest, accurate sizing—not every manufacturer can say the same.

When we say 5/16", we mean 5/16"

Stopwatch graphic

Save $ in the aisle. Save $ in labor.

Spax vs competitors
SPAX® vs Competitors

How Many Fasteners Does it take to do the Same Job?

SPAX® PowerLags® patented serrations provide exceptional gripping power, allowing for a secure connection with fewer screws or bolts compared to our competitors. Save time and effort during installation while ensuring a strong and durable deck attachment with SPAX.

AMPLIFY YOUR CRAFT™

SPAX SETS THE BAR