E-Z LOK951618-13 E-Z Lok Threaded Insert, Zinc, Hex-Flanged, 5/16"-18 Internal Threads, 0.512" Length (Pack of 50)

I have used literally hundreds of these in my woodworking business. Despite the description that they are intended for softer woods, I have also used them in some very hard woods too. I love the flanged tip so if you chamfer the hole a little bit the insert sits flush with the wood surface. This is important when installing support plates or legs with plate mounting so everything sits as it should on the surface of the wood. I turn them by hand, as using a power drill can put too much torque too fast and trust me you don't want one breaking off inside the hole. Luckily, this only happened to me once in the hundreds I have installed and I'm sure it was pilot error. (it was on the first table I ever used them on, and probably had the wrong drill bit size) I have used some other brands but found those broke far too often and just weren't worth it. Stick with E-Z Lok and you will not be disappointed.

great product

Poor manufacturing quality on a sofa which required some adjustments. These inserts did well and the sofa feeds are now stable as they should have been in the first place.

In Western Red Cedar, I found that a 3/8" drill bit is too big, and 5/16" is too small. Had to buy a special 11/32" bit, and that worked perfectly. Make sure to screw your 1/4"-20 screws into the inserts at least 1/2" with light finger touch to avoid cross-threading. I had a few that just wouldn't work at all. But overall, I'm happy.

Used these in a subwoofer enclosure. Perfect for 3/4 inch MDF wood.

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.

The 3/8-16 internal thread required 1/2" drill bit for pilot hole, and a 10mm hex to screw it in.

Yeah, it's a 10-32 internal thread, but the screw will not go all the way through and come out the other end. If you try forcing it and and go to remove the screw then the entire insert is coming out as well. Had to go out and get shorter screws for the project I'm on.

Insertos roscados de buena calidad

Did the job exactly as I hoped it would. I used it to install a swimming ladder on our dock at the cottage. I wanted to be able to take the ladder off for the winter.

Très pratique pour mettre en place des taureaux dans du bois

I have used these in a number of jigs. I like them, but try to get them in straight. It's best have a long hex wrench or chuck a hex in a drill press so you can screw them in the hole very straight and perpendicular to the wood

Buena calidad aunque de material muy suave, creí que era de acero inoxidable, aunque es eficiente a secas.