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

great screws. I used these to secure pieces of 2x4s when building shelves. I did have to drill pilot holes when screwing near ends of the lumber as the screws split the wood when I didnt drill pilot holes

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.

EXCELLENT

I am building planter boxes and they work perfectly!

Great fasteners. Found on Amazon and used for various heavy weight mounting projects. You can read the tech specs on the box, but I used two of these into a stud to hold 100Lbs+ of bumper plates to the wall. Includes the special bit. Drives in easy, looks clean, and the head is wide enough you probably wont need a washer.

I used these screws to layer 4x4 landscape timbers. They drill in easily using a lightweight cordless drill. No pre-drilling required. No splitting (I avoided the last 3 in inches on either end). And they hold strong. Very impressed, easy to used, and easier/cheaper than using lanscape spikes or 60d nails, etc.

Totally happy with these. Pros: the included spider bit works great driving these fasteners into redwood, pine and cedar. No experience with hardwoods. Depending on the wood itself (adjacent knots, etc), these will counter-sink themselves without stripping, leaving a flush finish. Much nice than the traditional hex-head timber lox. These have a wider diameter head, so they hold very well. Cons: none. Application -- building a pergola from recycled redwood planks.

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)

These are hard to find at our local hardware or Home Depot and when I can get them they charge premium price, so this is a great deal for me. I use them for barns, out buildings, fencing and other general projects around the farm. Using the HeadLock fastners ensure that what we build stand up to the abuse of the elements and animals. They pull warped boards together without going in deep like the smaller heads do. These have been the best damn screws we have found.

Screw is fine, but you need to pre-drill hole. Also, the head is Not a Torx head. Just what i needed, another screw bit head to carry around. Dumb.