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.
Design Values & Loads
ALLOWABLE WITHDRAWAL (W), HEAD PULL-THROUGH (WH)
- “Withdrawal” and “Head Pull-Through”, and design values shall be adjusted by all applicable adjustment factors per NDS Table 11.3.1.
- “Withdrawal” design values are to be multiplied by the length of the thread penetration into the side grain of the main member. Length includes tip.
- “Withdrawal” design values are from the main member, and “Head Pull-Through” design values are based on a minimum of 1-1/2" side member thickness.
- Tabulated “Withdrawal” and “Head Pull-Through” design values are for the wood species with the listed assigned specific gravities. Where the wood species assigned specific gravity is not listed, use the next lower assigned specific gravity values.
CAD & Dimensional Drawings
Docs & Files
SPAX PowerLags HCR Outdoor Structural Construction Lag Screws
SPAX: Ultimate Strength For Multi-Ply LVL Beams
The Best Structural Screws For Deck Ledger Installation SPAX® POWERLAGS®
SPAX ENGINEERED FASTENERS ARE THE MOST ADVANCED FASTENER 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.
Built-on Washer Head
Learn More About SPAX® Powerlags®
Featured ApplicationsVIEW ALL
SPAX® Engineered Fasteners require no pre-drilling, drive faster and hold stronger for longer. Want to build a deck of incomparable strength? Our expert guide helps you find the perfect products and lengths for every square foot of your deck project with pro tips from the SPAX Crew™ included.
Mass Timber Construction
Valued for its natural beauty, strength, and versatility, wood offers endless possibilities in architecture and design. Conveying warmth and sophistication, it can be used as a load-bearing structure and an interior finish material. Mass timber construction is capturing the imaginations of leading building and design professionals, who continue to evolve and advance its potential.