FastenMaster FMHLGM412-50 HeadLOK Heavy-Duty Flathead Fastener, 4-1/2 Inches, 50-Count

Drives like a champ. Way easier and faster than the 3/8 bolt it replaces. Hoping the engineers did their homework because these fasteners are too good to believe.

Cheap material. I tried to screw it into a tree to hold something. I used the drill to open the first 5”, but it still strip the head. Used a good quality 5” screw that I had instead, and that worked fine. Perhaps you can use it for very soft wood.

The good thing about this is that they give you the spider drive bit for the screws. But I bought a box of 50 6 and I got 49 6 and 2 4. How that happened I do not know but if i needed exactly 50 6 screws I would be screwed. Pun Intended.

these are as strong as 3/16 lag bolts but a lot easier to use and look great for my shelf brackets

Work as designed. Very durable. Had to take apart the steps I was building a couple of times and the heads did not strip out. Would buy again.

Table making .

Love these and 20 percent cheaper than Home depot!

...and a retaining wall of pressure treated 6x6 lumber. The result is so solid I know I wont need to redo it in the future.

robust, easy to fasten, should hold securely for a long time!

use w a powerful drill/driver. drill a pilot hole when necessary (rarely) to prevent splitting... I use them for framing, for restoration. Clamp a sister to exstg pc, drive 2 or 3 Timberloks, then you can undo to adjust position or re-cut. When its right and tight, Ill nail the pieces - maybe leave TLs in or remove them for reuse. They can be driven in places where you cant swing a hammer.