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Pack of 40 1/4-20 Threaded Inserts for Wood
Screw in threaded inserts are best for softer woods plywood and hardwood, their outer threads cut easily into your wood applications, you just need to drill a hole that the size of the body into the wood for the threaded insert.
- Length: 0.591" (15mm).
- Body Φ: 0.315" (8mm).
- Threads Φ: 0.410" (10.4mm)
- Recommended Drill Bit for Soft Wood: 9mm Bit, If Small, Try 3/8" Bit.
- Recommended Drill Bit for Hard Wood: 3/8" Bit, If Small, Try 10mm Bit. (Be careful with hard materials)
- ◤Note:◥ For Reference Only, as best practice varies between your applications, the size of Drilling Hole Depends on the Hardness of Your Wood.
- For wood applications requiring a screw-in insert, consider our threaded Insert, they are inexpensive solution for reinforcing threads in hard woods, soft woods, and plywood.
- These wood threaded inserts are easy to install, simply drill the right sized hole and thread the insert into place using a screwdriver or a 6mm allen wrench.
David Salvatore
Reviewed in the United States on March 2, 2025
fast and efficient
Michael J McKeon
Reviewed in the United States on February 8, 2025
Product performs exactly as intended. No issues.
Richard Smith
Reviewed in the United States on February 28, 2025
These have a course screw thread that will old them tight in wood, soft or hard, but I would like to have them paired with longer screws. I purchased the 1 in screws but will have to purchase separate 2 to 2 1/5 in screws to make them work on my project.
BLB
Reviewed in the United States on February 25, 2025
Well made and do not strip easily.
Pam and Moe
Reviewed in the United States on February 13, 2025
Works great for projects and repairs.
JAmidon
Reviewed in the United States on May 10, 2024
Used these when making a kid’s bed. These inserts work fantastic. Had no problem with them; just make sure you drill the correct size pilot hole.
Fallswine
Reviewed in the United States on February 20, 2024
Great product. Worked as they should. As a note, as I was setting these units in aged, very hard, dense hickory I was concerned about stripping the hex head. Especially as I was concerned about the treads pulling out of the wood so I drilled the pilot hole for soft wood. To help reduce friction, I applied some bar soap to the external threads prior to threading them into the wood. The inserts went in easily and I had no issues with stripping the hex heads.
Carlos Gómez
Reviewed in Mexico on September 15, 2023
El producto cumple con lo ofrecido
はなこうぼう
Reviewed in Japan on January 17, 2023
1/4インチは中々手に入らないくて助かりました。
J. Bennett
Reviewed in the United States on September 8, 2022
I used three 1-3/4 x 4" wide red oak cleats on the bottom side of my 2" thick oak work bench top instead of c-channel to help keep the top flat. I slotted the holes in the cleats to allow for wood expansion. I attached the cleats to the underside of the top using these 1 inch (20mm) long steel threaded inserts. I used about 25 inserts for this project. I drilled the 3/8" pilot holes using a shop made drill guide and a veritas 3/8" brad point drill bit. After drilling, I chamfered the holes with a counter sink. I drove the inserts in with a harbor freight T-handle allen driver. The inserts went in fairly tight but did not feel like they were too tight. They all drove in with out damage to the inserts or the driver. The 1/4-20 bolts used to secure the cleats fit nicely without any problems. I was able to remove a few inserts and reuse them in a different location with no problems. Best inserts I've ever used. Highly recommed.
B. Stefan-rasmus
Reviewed in Australia on July 25, 2021
I think that i now have a lifetime supply of theses inserts. A good range of sizes neatly packaged
Dan Twomey
Reviewed in Canada on November 26, 2021
I used a 3/8" drill for both Black Walnut and epoxy and these worked perfectly for me.
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