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

These fasteners are a great alternative to using standard lag bolts. They are easier to install and seem to hold up very well. I have used them in several different applications and have not had any issues yet.

Great product, works extremely well. Will buy again.

Glad I saw reviews of these screws on some woodworking websites and decided to buy them. I used them to build a large workbench (connecting 4x4s and 2x4s)...much easier than traditional hex-head lag screws or carriage bolts Ive used in the past. Though they say no pilot hole is needed, I found they are so aggressive when being drilled in, they can/will split wood if installed too close to the edge. Pilot holes eliminated that problem. Other than that situation, they really dont need pilot holes. They wide head eliminates the need to use washers, saving time and money, yet allows them to be driven flush or even countersunk. Would happily use them again.

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.

Price was good, delivery was good. They are as advertised and worked great in my application screwing gable trusses to the side of my shop to attach a roof to cover my doors. There was 50 in the box and there was a driver in the box.

These are great screws. The other reviewers have covered their good points. There is a catch--the driver needed to use them. While it certainly resists cam-out, the teeth or splines on the drivers tend to break all too easily--sometimes after driving only 20-30 screws. I dont know whether the problem is with the number of points, which makes each drive spline too thin, or inadequate heat-treating, or what. I do know that if, like me, you use this type of screw in large quantities (I am a builder and specifically a timber-framer), you will need a significant back-up supply of the drivers. That said, I continue to use these screws for their strength, good looks, and durability.

I received an opened, damaged box with 1 screw missing. All in all, it could have turned out worse. It isnt like there was anything wrong with the other 49 screws and I suppose Im lucky it came with the required and proprietary bit, but I was probably one shake away from receiving an envelope bag of screws instead of a box of them

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

I never paid any attention to this product in the past. My son pointed out and I took a chance when I was making some major repairs to my house. I found this product and several variations from Fastenmaster that proved to be great fastening solutions.

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