

🔧 Upgrade Your Woodwork Game with Pro-Level Inserts!
This pack of 50 zinc-plated carbon steel 1/4-20 threaded inserts features a 15mm thread length and hex drive compatibility, designed for seamless installation in a wide range of wood types. Ideal for furniture assembly and woodworking projects, these inserts deliver durable, corrosion-resistant fastening with professional precision.


| ASIN | B07SSCF8Y4 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #43,526 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #69 in Nut Inserts |
| Brand | Sprite Science |
| Color | White |
| Customer Reviews | 4.7 4.7 out of 5 stars (623) |
| Cutting Diameter | 11.7 Millimeters |
| Date First Available | June 6, 2019 |
| Exterior Finish | Zinc |
| Fastener Type | Hex |
| Finish | Zinc plated carbon steel |
| Finish Type | Zinc plated carbon steel |
| Head Style | Flat |
| Inside Thread Size | 10.4MM |
| Installation Method | Screw-In |
| Item Diameter | 11.7 Millimeters |
| Item Weight | 8.2 ounces |
| Item model number | 50x1/4-20WOODINSERT |
| Manufacturer | Sprite Science |
| Material | Carbon Steel |
| Maximum Shear Strength | 300-500 MPa |
| Metal Type | Alloy Steel |
| Number of Pieces | 50 |
| Part Number | 50x1/4-20WOODINSERT |
| Shape | Hexagonal |
| Size | 1/4-20 x 15mm |
| Thread Class | UNC |
| Thread Coverage | 15mm |
| Thread Size | 1/4"-20 |
| Thread Style | Threaded |
| Thread Type | 1/4-20 |
| Usage | Wood, Furniture |
M**E
Great price
Worked perfect for my project. Inserted into 3/4 inch osb and very strong with no tear out
K**H
Have used 22 so far without quality issues
I used these inserts to secure support braces and legs on a live-edge dining table. They work great. As with any inserts from any supplier, use caution to get them started in the pre-drilled holes straight for ease of attaching your legs, etc.
J**M
Standard incert
I used a few. Had a few with goobered threads. Can’t beat the price. Good for back plating not face threading. Be warned. I glued Mine after 3 fails.
R**A
Inserts
Super quick!!!
T**H
Easy, solid, countersunk.
Of all the inserts I’ve used so far, I like these the best. Seemingly solid build, easy to install. Per the instructions I pre-drilled with 3/8” for hardwood, used a countersink for the little flange at top, and installed with the pictured bolt/nut combo tool on an impact driver and a small amount of super glue. No breaks, no fuss, giddy up!
T**H
Right size
These worked very well once O made the holes the right size.
A**H
Good quality
Good quality for the price!
F**T
Easy install and secure fit
Built a custom table and needed to attach the top to the metal stand but wanted it to be easily removable. These mounts worked great. Plan on using them for all my projects when applicable.
Trustpilot
2 weeks ago
2 days ago