Shopping Cart

Your cart is empty.

Your cart is empty.

SPAX 1/4' x 3' Interior Washer Head Structural Wood Lag Screws Powerlags Torx T-Star (50 EA) Bit Included Heavy Duty

4.8 (8) Write Review
Free shipping on orders over $29.99

$15.18

$ 7 .99 $7.99

In Stock

About this item

  • Check out our Threads! Our patented thread serration technology allows the screw to be driven faster, reduces splitting in wood, and reduces driving torque by 40 percent. Let the SPAX FACTOR take some of the hassle out of your next project
  • The ideal replacement for the conventional lag. IRC/IBC Code Compliant: TER-No. 1912-07
  • Engineered and Manufactured in the USA
  • True to size thread diameters, grade 5 heat treat, and the washer head style are just some of this fasteners distinct advantages. Tested under the toughest scenarios to give you confidence in every connection
  • T-Star drive accepts and is compatible with all industry standard bits. Our 6-Lobe design provides superior bit engagement. Better bit engagement means quicker installation with less effort.


Product Description

T-star washer head yellow zinc powerlags

Built-on washer head

Eliminates the need and cost of a separate washer.

Reliable connections

Tested strength for tough connections.

Patented serrations

Allow for quicker, easier fastening.

SPAX patented thread technology
Structural wood-to-wood connections

Customer
2025-08-20 18:39:38
FAST SHIPPING AND GOOD PACKAGE.
TreeShade
2025-07-26 15:53:49
I alway keep tabs on these and buy them unnecessarily (when I don’t need them).1/2023 $180 for 4” 500pc12/2024 $110 for 4” 500pc - win!I already have 1000pc Jake’s 4” ($300). They are torx 25 for such a long lag (yes I’ve broken t25 tips). I don’t need these but I purchased them anyways b/c $110 for 500pc is very affordable and they are Torx 30. So I stock up when I can. I’m trying to use up all my Jake’s b/c of the smaller torx head and buying exclusively spax. Simply can’t go wrong.
J. M. Hinkle
2025-06-07 15:36:48
These screws are phenomenal. I used them for some suspended shelves I built in my garage to attached them to the studs in the walls. No heads were stripped thanks to the large Torx T30 drive. Once screwed in, they supported 8 and 10 foot sections of 2 foot deep shelving alone until I ran the support rod from the rafters. I was dissapointed that the bit was not included as usual with most Spax bolts, but I never have any problems with the Torx drive style bolts stripping. I will continue to use Spax products with the Torx drive for various assembly projects.
GMC
2025-05-17 14:09:23
Used the 6" and 4" Spax screws on this shed roof project. They really do start very quickly so the thread is a good design. Saves on battery life on my impact driver and saves my fingers when holding and they start right away unlike other screws I've used where my fingers start heating up before they go into the wood. I only wish the 6" screws had more thread to them.
david
2025-04-01 09:02:01
these screws are very good,but it will take a while to see if they are as good as grk screws that i normally use.
Customer
2025-02-16 17:28:45
I was surprised to find these in a box at a reasonable price. In order to buy locally I have to buy them individually and it can get very expensive.
David R. Lange
2025-02-13 17:52:47
Great lag effect to snug up the construct. By way of disclosure, I did predrill this pricey rough cut cedar. I placed 46 of 48 planned screws before the T30 driver ground itself and the torx slot in screw #47 to smithereens. Not too bad, really.
Raymond Kahle
2025-01-20 10:48:19
Excellent product and experience