Spax 3581820801150 5/16 x 4-1/2" T-Star Washer Head HCR (Exterior) PowerLag Screw (250 Pieces per Pair)

The trend setting low profile built-on washer head design offers a contemporary and sleek finished installation. Excellent draw down strength without the need for a separate washer delivers superior clamping ability and a easier installation

Check out our Threads!! our patented thread technology allows the screw to be driven faster, is easier to install, and reduces splitting in wood. Let Spax take some of the hassle out of your next project

High Corrosive resistant (HCR) coating makes these screws ideal for use in treated lumber and exterior applications

Heat treated Grade 5 Durability. Subjecting the screw to heat treating gives greater strength and reduces breakage

T-Star plus head provides superior bit engagement. Better bit engagement means quicker installation with less effort

size:

5/16 x 4-1/2"

Retail Price: $ 149.43

Wholesale Price: Inquire Now

SPAX is a brand of the ALTENLOH, BRINCK & CO. of Ennepetal, Germany, founded in 1823. SPAX screws were first introduced to the European market in 1967 as a revolutionary line of multi-purpose construction screws. Today, the SPAX brand represents a broad selection of engineered fasteners for the construction and automotive industries, and symbolizes the highest quality fastening solutions. It’s one of the most recognized brands in Europe!

SPAX PowerLags - Wood Fasteners

HIGH PERFORMANCE and HIGH VALUE PowerLags

SPAX PowerLags offers 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 lag screws. HCR high corrosion-resistant coating option for use in interior or exterior applications, including treated lumber.

Code Listings ICC-ES No. ESR-1782
No pre-drilling required (1/4" and 5/16")
Heat Treated to Grade 5 Durability
Patented Thread Serrations Require up to 40% Less Driving Torque
Built-on Washer Head Designs


Built-on Washer Head The low-profile, large diameter head design provides outstanding clamping force and improved aesthetics. Deep T-Star drive offers excellent bit engagement without requiring a “special” driver bit.	Patented Thread Serrations Patented thread serrations require up to 40% less driving torque to increase installation speed while helping prevent cracking in logs.	HCR Coating These T-star Washer Head screws are made of carbon steel and feature High Corrosive resistant (HCR) coating which makes these screws ideal for use in treated lumber and exterior applications.	Project-friendly Packages SPAX PowerLags are sold in project-friendly packaging quantities that help minimize your building material costs: by the piece, 25 or 50 count Contractor Packs, and Bulk Pails - 150 Pieces/250 Pieces/500 Pieces Per Pail (by special order).


	SPAX 1/4 x 6" T-Star Drive Washer Head HCR PowerLag Screw (500 Pieces/Pair)	SPAX 1/4 x 5" T-Star Drive Washer Head HCR PowerLag Screw (500 Pieces/Pair)	SPAX 1/4 x 4-1/2" T-Star Drive Washer Head HCR PowerLag Screw (500 Pieces/Pair)	SPAX 1/4 x 4" T-Star Drive Washer Head HCR PowerLag Screw (500 Pieces/Pair)	SPAX 1/4 x 3-1/2" T-Star Drive Washer Head HCR PowerLag Screw (500 Pieces/Pair)	SPAX 5/16 x 3" T-Star Drive Washer Head HCR Powerlag Screw (250 Pieces/Pair)
Head Type	Washer Head	Washer Head	Washer Head	Washer Head	Washer Head	Washer Head
Size	1/4 x 6"	1/4 x 5"	1/4 x 4 -1/2"	1/4 x 4"	1/4 x 3-1/2"	5/16 x 3"
Drive Bit	T-30	T-30	T-30	T-30	T-30	T-30
Thread	Partial	Partial	Partial	Partial	Partial	Partial

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Spax 3581820801150 5/16 x 4-1/2" T-Star Washer Head HCR (Exterior) PowerLag Screw (250 Pieces per Pair)

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Product introduction

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Discover the Spax Advantage! this German engineered/American made Spax 5/16 x 4-1/2in. T-star Drive washer head HCR PowerLag offers a premium quality fastening solution to help ensure professional results in less time than inferior imported screws. Say good Bye to your fathers traditional lag. Spax PowerLags offer superior installation performance and durability over traditional lag screws and carriage bolts for structural wood construction. Made of carbon steel and coated for long term durability to ensure your project endures. Do it Once, do it right with Spax.

From the manufacturer

SPAX PowerLags - Wood Fasteners

HIGH PERFORMANCE and HIGH VALUE PowerLags

Code Listings ICC-ES No. ESR-1782
No pre-drilling required (1/4" and 5/16")
Heat Treated to Grade 5 Durability
Patented Thread Serrations Require up to 40% Less Driving Torque
Built-on Washer Head Designs


Built-on Washer Head The low-profile, large diameter head design provides outstanding clamping force and improved aesthetics. Deep T-Star drive offers excellent bit engagement without requiring a “special” driver bit.	Patented Thread Serrations Patented thread serrations require up to 40% less driving torque to increase installation speed while helping prevent cracking in logs.	HCR Coating These T-star Washer Head screws are made of carbon steel and feature High Corrosive resistant (HCR) coating which makes these screws ideal for use in treated lumber and exterior applications.	Project-friendly Packages SPAX PowerLags are sold in project-friendly packaging quantities that help minimize your building material costs: by the piece, 25 or 50 count Contractor Packs, and Bulk Pails - 150 Pieces/250 Pieces/500 Pieces Per Pail (by special order).


	SPAX 1/4 x 6" T-Star Drive Washer Head HCR PowerLag Screw (500 Pieces/Pair)	SPAX 1/4 x 5" T-Star Drive Washer Head HCR PowerLag Screw (500 Pieces/Pair)	SPAX 1/4 x 4-1/2" T-Star Drive Washer Head HCR PowerLag Screw (500 Pieces/Pair)	SPAX 1/4 x 4" T-Star Drive Washer Head HCR PowerLag Screw (500 Pieces/Pair)	SPAX 1/4 x 3-1/2" T-Star Drive Washer Head HCR PowerLag Screw (500 Pieces/Pair)	SPAX 5/16 x 3" T-Star Drive Washer Head HCR Powerlag Screw (250 Pieces/Pair)
Head Type	Washer Head	Washer Head	Washer Head	Washer Head	Washer Head	Washer Head
Size	1/4 x 6"	1/4 x 5"	1/4 x 4 -1/2"	1/4 x 4"	1/4 x 3-1/2"	5/16 x 3"
Drive Bit	T-30	T-30	T-30	T-30	T-30	T-30
Thread	Partial	Partial	Partial	Partial	Partial	Partial

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Any side must be less than 60cm，otherwise you will be charged the greater one between real weight and volume weight，more than 120cm will be not accepted.