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dorotyh barr
Reviewed in the United States on March 3, 2025
Works great
Bill Fraser
Reviewed in the United States on February 17, 2025
The product picture has "5 mm" as the diameter of the bottom (non-knurled edge), which is nonsense.Mitutoyo-san says it's 6.15mm.The other dimensions are correct. 7.0mm long, and 7.0mm outer diameter of knurled edge.
Mark Peterson
Reviewed in the United States on January 29, 2025
These work great! Must ensure hole is just under sized. If you can get the heated insert tool that hooks to a soldering iron that screws on or is bolted on that is better than the slip ons. Either works but the slip ons tend to fall off.I use these on all of my 3D prints that get screwed together. I have designed and built 3 laser cutters using them as well as other items.
JJA
Reviewed in the United States on January 26, 2025
These work well for my purposes. Price was good.Would recommend if you need these type heat set inserts.
B_FURY
Reviewed in the United States on December 25, 2024
Works well enough
J Goldsmith
Reviewed in the United States on December 17, 2024
These are for m2.5 bolts, so make sure you're using them for tiny holes. So far they've been easy enough to insert and are holding the bolts as I would expect them to.
Michael H.
Reviewed in the United States on December 14, 2024
They work perfectly for my 3D printing projects! Heating them into place was surprisingly satisfying, and they hold threads like a champ. I’ll probably have enough to last me through this life and the next. Highly recommend for anyone tired of janky screws in their prints!
JC
Reviewed in the United States on November 5, 2024
I received this Hapric 200 Pcs M3 Threaded Inserts for Plastic in November 2024. I received the "M3 x D5 x L4" version. The item I received matched the Amazon product page description and pictures with the exception of one of the pictures. On one of the pictures it shows what appears to be a black knob next to the inserts. This suggests the knob is included with the set. However the product description and specifications does not mention any type of knob being included with the set and the picture I mentioned is the only place on the product page that shows/mentions the knob. I am not entirely sure what this knob is and I don't have a need for it so it didn't matter to me it wasn't in the set I received. The set does include a very basic tweezer.The inserts themselves worked well for my needs. I like this particular design of insert with the 2 rows of knurls where the rows have knurls in opposite directions. I have had the best results with this style of insert and these inserts held well in the project I used them on. I applied these inserts to my 3D print using a soldering iron.I think these inserts work good and are worth considering if you are looking for heat inserts like these.
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