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

Great product. It is easier to use then most lags

works like a charm

Table making .

Nothing to dislike they are the best. Im a roof contractor primary use is securing roof anchors for saftey harnesses, into a truss of course. First experience 7 years ago building a tree house. Requires little energy meaning extended battery life. Going into a harder wood the aggresive thread will pull the wide head half through the side of a 2x4 without effort. These screw are hard to find sometimes and Amazon has good prices if you shop the site. Repeat buyer every few months.

My favorite fastener by a country mile. Ive used hundreds to build gardens, playsets, even furnature. So, epically strong. One note, if you pre drill and used a 5/8ths spade bit to carve out 1/8 deep into the pre drill hole, you get a very professional look.

Something different as the (same) ones bought a few months back in the box store, also slightly different packaging. The finish is rougher, and they dont go into wood as easily. To me it appears as is some corners have been cut.

I am building planter boxes and they work perfectly!

Awesome fasteners. So much easier than pre-drilling and driving lag screws. Ive used the related LedgerLOK screw as well.

Almost addictive. Used for construction and quick robust repairs. Drive easy and love the flush finish when torqued down.

These used to be my favorite fasteners for wood projects. Very good. Easy to drive, nice mostly flat head. However I have found other fasteners I like better that are cheaper. (spax)