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1.These Knurl Thread Insert Nut can be widely used on the injection for tightly fixing.
2.Can be installed by ultrasonic or heat into blind hole, or in during injection.
3.No need to counterbore or countersink the boss hole since the insert has guide pilot.
4.Made of brass material, good thermal conductivity and heat resistance.
Specification:
Material: Brass
Thread Size: M4
Pitch: 0.7mm
Length: 5mm / 0.2"
Outter Diameter: 6.4mm / 0.25"
Main Color: Gold Tone
Package Content: 100(+/-2%) x Knurl Thread Inserts
M. Miri
Reviewed in the United States on January 14, 2024
These are as advertised. Ensure you are using the correct “M4” type screws.
Greg Munker
Reviewed in the United States on January 1, 2024
I encountered significant difficulties using these M3x4mmx4mm inserts for my 3D printing projects. The inserts repeatedly lost their grip on the plastic, causing them to spin and consequently enlarge the hole, rendering the print unusable and forcing me to reprint. It's unclear whether the issue lies in the design or the diameter of the insert, but the outer threads simply didn't secure properly. This resulted in a lot of stress and wasted filament.To resolve this, I ordered a different set of Uxcell insert nuts, which featured crossed outer threads instead of straight ones. These worked perfectly on the first try. If you're considering purchasing this particular style and size, I urge caution due to the inconsistencies I experienced. Instead, I recommend trying a slightly different style from the same company and seller, which can be found [here](https://www.amazon.com/gp/product/B09MCW7ZN5/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1). It might save you the frustration and material waste I went through.
DJ
Reviewed in the United States on February 20, 2023
These worked great for adding case feet on the bottom of my 3D printed PCB enclosure. M3 motherboard screws fit perfectly into the small rubber feet. The heat inserts are easy to use with any soldering iron. You don't need a special heat insert tip, any soldering iron will do. There is a thin and fat side to each insert. I put the thick side down so there's less chance of back-filling. I actually insert them with a screw already in it, threaded level with the bottom, to help prevent back-filling into the threads as well. Heat pressing them with the screw already inside using the tip of the soldering iron is a balancing act for sure but I've found this method to work best with no failures of back-filled threads.
Robert
Reviewed in the United States on August 9, 2022
Its my bad I didn't get the right size as I ended up going to the hardware store and getting 2 of the right size as I dont know what to do with them now. But its my bad so make sure you get the right ones.
rafael lira lira
Reviewed in Mexico on May 24, 2022
Del producto me gusto la exactitud dimensional y la entrega muy buena
Jeffrey Williams
Reviewed in the United States on October 27, 2019
I used these in 3/4 MDF and they worked great. No splitting of the wood. Used Gorilla super glue gel to bond them in since they will experience a lot of torque. Very satisfied with the results. 5 stars!
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