3/8 x 5 SPAX Washer Head Interior Lag, Yellow Zinc, T-Star, Qty:150

3/8 x 5 in. SPAX Washer Head Interior Lag, Yellow Zinc, T-Star - Qty:150

Goodbye Conventional Lags!

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 screws.

The TORX® Recess fastener has been an automotive industry standard for many years now.

TORX® is a patented brand name for a six-pointed drive pattern developed in 1967 by Camcar Textronics. The Generic name is Star Drive is commonly used instead of the Trademarked TORX® to identify the six lobed drive system. Other companies have branded their own particular six-lobbed drive system like Spax has a T-Star and T-Star Plus. By design, the six lobbed drive resists Cam-Out better than Phillips (Phillips is designed to cam-out to prevent over torquing) and slotted head screws.

Sizes are numbered and all start with a T and range from 1 to 100. Starting with T-1 to T-10 they step up by increments of 1. From T-10 to T-45 they step up in increments of 5 and from T-50 to T100, they step up in increments of 10.

SPAX® T-STAR®: The driving surfaces of the T-STAR force application are arranged in the shape of a star and run vertically, simplifying tool insertion and ensuring a firm grip. This force application shape puts an end to the cam-out effect. The contact force during fastening is reduced to a minimum and high torques can be transmitted to the screw without damaging it or the tool.

SPAX® 4CUT® point: The 4CUT® point enables fastening without pre-drilling (depending on the wood). This is achieved through its special screw tip. The arrow shape pushes through the fibers of the wood, ensuring a fast grip. This effectively prevents the material from splitting and reduces the insertion moment. For hard woods, we recommend pre-drilling even when using SPAX with 4CUT.

Deep Thread: Characterized by a reduced diameter shank resulting in a deep thread profile. A single lead thread, meaning that one revolution advances the screw one pitch. (Pitch is equal to 1 divided by the number of threads per inch. For a screw with 10 threads per in., one revolution will advance the screw 1/10 in. into the wood.)

The deep thread form provides superior resistance to pull-out. This design feature is commonly called a Lo-Root® or Production Screw.

FEATURES:

 
• Low-profile, large diameter head design allows for outstanding clamping force and improved aesthetics
 
• Deep T-Star drive offers excellent bit engagement without requiring a "special" driver bit
 
• Yellow Zinc Coating for tough indoor jobs
 
• Code listing: ICC-ES ESR-1782
 
• Technical evaluation report 1711-01 deck ledger application
 
• Heat treated to Grade 5 Rating
 
• Patented thread serrations require up to 40% less driving torque to increase installation speed while helping prevent cracking in logs
 
• Built-in washer head designs eliminate the need and extra cost of a separate washer