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

Was a good option for areas on deck that needed structural support.

Great screws, but did not come with the bit that it takes to drive the screws into wood. Now I have to hope the hardware store has some so I can start my project.

I had a couple of diverse uses for these HeadLOK screw. One use was a trim application and the other a stair repair. These screws worked well for both situations. I have a 10 foot x 5/4 x 6 piece of Bubinga transition board between my tile kitchen floor and my carpeted living room. If youre not familiar with Bubinga, the pieces I have are reclaimed 40+ year old wood that is basically Brazilian Walnut, is hard as rock, easy to machine but tough on machine tools due to its high silica content. My problem was that over the 10 foot run, I could not pull the Bubinga close to the floor with standard wood screws because its too thick and the Bubinga was always squeaking and flexing. I tried shims and then floor leveler. Nothing worked. Then I used these HeadLOK lags to pull it down and they worked great. I didnt mind the “steam punk” look of the wide heads on the Bubinga - it looks sort of cool (see photo). I pre-drilled the Bubinga for the HeadLOK lags - I didnt want to split a 40 year old piece of rare hardwood. My other issue was a site built basement staircase. The stair treads were pulling away from the stringers. The HeadLOK lags worked great to pull it all back together. The one thing you need to know is that the Spider Drive bits required to drive these lags cannot be replaced with any other bit on the planet. I literally have 200 odd sized drive bits - Torx, Allen, Torx security, 1-3 square drive, Phillips JIS and every other bit you can think of but without the Spider Drive drive bit, youre unscrewed - you cant drive these bits. That sort of sucks but these bits also drive very securely, better than Torx. I can see what customers complained about the missing drive bit in some reviews because there is no substitute I am aware of - if you know of one, let me know. In the attached photo, you can see the Bubinga trim board with the HeadLOK lags in place, I used a 17mm forstner bit to recess the HeadLOK heads so they are flat to the surface and for the first time in 15+ years, the Bubinga transition board does NOT flex or squeak. Hope that helps!

Na

...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.

I first used these a couple of years ago when I made a raised light fixture box in our kitchen. I was honestly stunned by the holding power hey have. The oversized head is great, no need for a washer. I still drill pilot holes because I feel it is better for the wood to reduce splitting. I have just started building folding workbenches for my garage using these to mount the brackets to the wall studs. Again drilling pilot holes these screws dig in and pull in hard. I have to be careful not to let them bend the bracket as they go in with such force.

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.

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.

The good thing about this is that they give you the spider drive bit for the screws. But I bought a box of 50 6 and I got 49 6 and 2 4. How that happened I do not know but if i needed exactly 50 6 screws I would be screwed. Pun Intended.

EXCELLENT