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

great screws that worked as expected

Building a fence.

i use these screws for fastening kitchen islands to the floor,ive been using these screws for this for sometime,pretty much since they came out with them,they are perfect and amazing this is the first time having bought them online,,, i now find myself trying to figure out how to kick myself in the butt for not buying them here before ive been purchasing them at one of the 2 popular hardware/lumber chains since using them and it is the exact same product but at a fraction of the cost,,,,cant beat that

Not only did these work very well - I needed to add some 4x4 supports for a cover to an existing deck - but they look good one installed. Not something youd normally credit to a screw. Worth the money.

Joined 4x4s with these. No predrilling needed. Used my Ryobi drill, barely sufficient. Awesome... if only they were cheaper!

...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.

works great, so much better then using bolts when building a deck

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.

Weve used a lot of different fasteners to hold deck framing together, and these are hands down the best so far. We drill a pilot slightly smaller and the same depth as the the smooth shank, then drive them with a cordless impact gun until they are flush. They are great a pulling and holding slightly warped framing lumber into line.

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.