• Provides a Strong Machine Thread In Hard Woods
  • Ideal For Use in Woods Like Oak, Cherry, and Maple
  • Designed For Use In Furniture, Cabinetry, Storm Windows and Tap Handles
  • Simply Drill the Appropriately Sized Hole and Install with Bolt/Jam Nut or Optional Drive Tool
  • Threaded Insert, Brass, Knife Thread, 1/4"-20 Internal Threads, 0. 500" Length (Pack of 25)

Worked great. I highly recommend purchasing the “T” handle. It made it so easy. I tested one threaded insert on a spare piece of wood first. As much as I tried to put it in straight it angled. I found that by using a level in conjunction with the “T” handle I was able to keep it straight and true. I also used a 3/8 drill bit with no issues.

Only this spec'd dimension would work. From experience, the big stores are sparse on furniture parts. It was not worth pawing through high dollar drawers and maybe running between 2 stores to find it or not. I'd have spent significantly more at either store. The E-Z Lok threads are sharp and did the job perfect.

These installed really easy in comparison to some 'lesser quality' inserts that I had. I would definitely buy these again. I use these for furniture making where parts need to be assembled/disassembled and for woodworking fixtures and jigs. 25/64" pilot hole for hardwoods. 3/8" pilot hole for softwoods and plywood. Several ways to install these...I made an installation jig from some scrap wood and some inexpensive hardware. There are lots of plans and videos on the net with info on making the jig.

This is an excellent product that is easy to use. I needed some of these and my local hardware store only had a few. The local big box store had competitive products that I tried. They were not what I needed. I mail ordered these from Amazon and received them quickly in plenty of time to complete my project. This product is better than the one I bought at the local hardware store. (The project involved hanging an HO Scale track from the bottom of a horizontal wall. The track is on ¾" plywood and was hung using the treaded inserts, ¼" threaded rod. The threaded rod is attached to the play wood using washers and nuts on each side of the plywood. The inserts were threaded into 2X2 blocks which were attached to the joists above. Using this method we were able to control the threaded rod in all three dimensions allowing the plywood to be level and solid all around.

These inserts work well and the cost is very affordable. Instructions say drill a 3/8" hole for the insert. Use a drill press wherever possible to drill the hole straight. Even with a straight hole it is still possible to drive these in skew. Also, it is not really possible to use a screw driver unless you have a really wide flat screwdriver to apply torque across the whole slit of the insert while driving it in. Using a narrow screwdriver will for sure break the ends off (in fact they often times still break with a wide screwdriver). You can purchase an E-Z Lock tool for driving these in (search Amazon for E-Z Lock Drive Tool). This fits nicely in the insert and locks in place for driving. Even still, use it in a drill press and drive the insert in by just turning the drill press by hand while applying downward pressure. The first time I used the tool in a cordless drill and it went in skew and even with a low speed and low clutch setting I completely broke the insert. A safer method of installing is simply using a bolt with a double nut to lock and a wrench to drive in slowly.

used these for attaching back side of Cajon to body - well made product - very pleased with result I suggest to get the special tool (T-wrench) to insert, as this makes the process go smoother and faster - note pictures - ps. when inserting try to make the insert go in straight (drill a straight hole first) or you will have problems getting the screw to go in straight

I bought a couple packs of these because I wanted a quality insert in which I could mount some leveling feet for some lamps. The wood was to be light oak (hard). I first went through the route of using their insertion tool with a variable speed drill. That didn't work so well and you can see by the last picture. The hole was as recommended (25/64) but the wood turned out to be too hard and it is near impossible to keep the action perpendicular. This resulted in angled insertion and a good bit of slips (scalloping) on the machined slots. I then decided I needed a drill press (just for the perpendicular action and a means to keep pressure on it while turning). I also added some pure silicon to the insert threads before inserting. In the end, I got what I really needed and like the job very much. Just check the softness/hardness of the wood, use something that can keep the action perpendicular and it will turn out fine. (I hand turned the drill press pulley - no electronic motion).

Used The Installation Kit 400-4 with a small amount of silicone grease on the end of the thread and a Ryobi Cordless drill set to the high torque setting. You need to be careful to keep the drill aligned with the hole (I read some of the other reviews before beginning and was worried about this so I had an assistant check my position before starting each insert - none of them went in off-angle but its clear that the inserts require care on this issue - thank you to the previous reviewers! ). All of my holes were perpendicular to a surface - no tricky angles ... but they installed much easier than I was expecting. Once set, they were very easy to use with the bolts.... Just set 24 more in 15 minutes - no grease this time.. practice helps.

These are a great solution to building knock down furniture. I built some large cabinets and bookcases in my shop. The problem is that I couldn't management gluing these large pieces of furniture together and then transporting them from my shop to the second story of our home. This little hardware item solved the problem. You simply drill a 25/64" hole and then use a specially available tool to "screw" the insert into the hole. 1/4" X 20 flat head screws complete the assembly, which can be "knocked down". I also used a patented kit from FastCap to countersink the screws and allow space for 9/16" caps that blend into the wood.

Used these inserts and some marine goop adhesive on my kayak to replace some screws that were just threaded into plastic. Should provide a much more stable fastenting system for items I want to secure on board. Very well made and reasonably priced product.