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

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.

Use these screws extensively on a deck. Biggest plus is the flat head.

When i saw this nail straighten out a bowed 2x4 into a stud i was seriously impressed. Ive looked all over my house to see where else i could use these they are so much fun to use. Ended up using these to attach a TV mount to a wall.

Almost a 5 had a couple that had burrs in the heads making them un-usable bad quality control

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.

Much nicer looking than old-school lag bolts that tend to snap. Made installing a set of exterior steps much easier. Would purchase again

great screws that worked as expected

Great fastener, now if theyd just make the drivers a bit more sturdy...

Finally, something to mount a hang board to my wooden studs! Worked brilliantly. Love that they come with a spider driver.

These screws are GREAT... good quality, nicely painted black, and as the head is flat, it nearly disappears once installed. They come with the Driver bit, so no need to look for one. Very happy, to the point that Im using this in various other projects.