E-Z LOK Knife Threaded Insert for Soft Wood, Zinc Hex-Flanged Thread Inserts M8-1.25 Internal Threads, 20mm Length Pack of 25

I used these for two projects so far. I wanted to add castors to a workbench, to raise it and make it mobile at the same time. I took a couple of pieces of 2x4 cut to the width of the bench and inserted 16 of these, 4 per caster. I was then able to screw the 2x4s to the bench and then bolt the casters to the bottom of the bench. Very secure. The second application was securing a mailbox. I wanted blind fasteners but I didn't want to have to rely on wood screws. I cut a piece of 1/2" plywood to fill the gap under the mailbox I chose and drilled it to match the mounting points and added inserts. I screwed the plywood onto my mailbox post and could then bolt on the mailbox. it is so much easier to use the bolts than to try to start screws while reaching to the back of the mailbox. And the mailbox is much more secure. The flanged bolts I used won't pull through.

Had some chair threaded inserts get damaged and stripped out. Replaced the old inserts with these and a little Gorilla Glue and they're working great! Nice, solid inserts!

Inserts arrived well packaged in a bubble package. Inserts were in a heavy sealed bag inside the mailer. Inserts look to be die cast and the finish is excellent. Price was excellent for the high quality. Delivery was quick and no trip to the store...saves time and gas money. I recommend buying in bulk from this supplier.I used them to mount some 8" casters to a dolly I had made for moving some furniture. I drilled 1/2 in diameter holes in the wood frame about 1 inch deep. Drill slightly deeper than the length of the insert. I screwed them in using a metric hex head Allen wrench, it fits perfectly. Casters are holding tight using some grade 8 3/6-16 bolts I bought from Amazon too.

These threaded inserts are great for soft-woods that either haven't been kiln-dried to increase their hardness, OR for woods that have been properly prepared. I used these with eastern poplar that was planed into 2x8x96 boards with pre-drilled holes using a basic power drill and a 1/2' bit. To install these you have two options, get a 3/8" - 16 hex bolt and some corresponding nuts. Cutoff the hex-head so the bolt is just a straight shaft, and thread the nuts on so only about 1/2" of the threads are showing, apply a drop of basic corn or vegetable oil and then thread the insert onto the bolt. Insert the other end (the end you cut the head off of) into your drill and adjust the power if you can to a medium setting. GO SLOW! Drill very slowly otherwise the nut will start to bore at the top of this zinc insert. They are extremely soft and will not hold up to a lot of torsional stress. The thing to note here is that you MUST prepare the holes for which this go into PROPERLY! The inserts themselves taper from about 3/8" at the bottom to 5/8" at the lip on the top. A simple 1/2" hole will be fine. You could use some liquid nail or epoxy to really lock these in. I recommend slow forward drilling and a quick burst in reverse to remove the makeshift driver bolt you created before hand.The other option which is probably easier is to just use a drive tool. You may get better results then I did, although mine turned out ok with the above mentioned process.This is my first time using these larger inserts for a very large desk I'm building for my father. They are to attach large 12 gauge steel L brackets to legs so the entire desk can be disassembled with a single allen key and about 20 bolts. Once the inserts are installed they hold quite well IF you've done things properly. Whatever tool you use to install these, you really only want the bolt or screw to be able to get no more than 1/4" of the threads to clamp on to. Otherwise, the zinc is going to lock down on your installation bolt/screw and freeze up.I'm giving these a 4 out of 5 stars for two reasons. They're WAY too soft. Granted, these are the only ones I could find on Amazon, and everything else was already in my cart. Partly my fault, but then again, according the tensile strength these should be stronger. 'm deducting also for the fact that there is a small shelf at the bottom of the insert (you can see it in the picture) that causes issues when installing them. You might want to even consider just using a dremel to remove that bit. Amazon got these to me fast and fairly cheap all things considered.Overall, be sure you are using these in a soft or softer wood such as pine, cedar, poplar, etc. I HIGHLY doubt these would play well with hardwoods like hickory or maple. You *might* get these to play well with some oak, but then again, it's iffy as was with the poplar (it's not really poplar, but the common-name is yellow poplar even though it actually belongs to a different genus of woods) I'm using. If you need these for a concealed area to fasten a bracket or something else they work well. Not great, but well enough to warrant their low price and decent value.

They’re extremely difficult to put in straight.I wish there were instructions for what size drill to use. Luckily another reviewer mentioned 3/8” worked. I never would have figured that out just by eyeballing them. And the only reason 3/8” worked for me is because I rocked the drill bit side to side a little at the end. Which probably contributed to them going in crooked, but at least they went in.I imagine if I had a drill press and a more adequate size drill bit that it would have worked better.If you look, the top of these are wider than the bottom so the rocking was necessary. 1/2” would have been too big but neither of my drill sets have anything between 3/8 and 1/2.It’ as painful as it is that many went in terribly crooked—I’m a perfectionistic as they come— for my application it doesn’t matter, only makes me cringe every time I look at them. I can live with that I guess. It’s user error, just warning you that they might not be as simple to install as you would think.I used them to make wood woof’em stick toppers to screw onto my pie iron handles so that I don’t have to haul around a third type of stick in our camping gear (pie iron, roasting stick, and now these).All in all I’m just pleased that they were available and do the job.

Way cheaper than the hardward store.

Way better than screwing into the pannel and look better to boot

Buena calidad y excelente precio

Insertos roscados de buena calidad

Easy to use, great price. Built custom tap handles for our kegging system.

I inserted the E-Z Lok into 5/4 walnut and used Innovative Components AN5C20005S321 1.75" Star knob 5/16-18 x 2.00" Steel zinc Stud Black pp (Pack of 10) to insert into the E-Z Lok

Es preciso en medidas y a las especificaciones ofertadas por el vendedor, cumplió con el plazo de llegada, es excelente servicio. Saludos desde Guerrero, México.