iCrimp IWS-3220M Micro Connector Pin Crimping Tool 0.03-0.52mm² 32-20AWG Ratcheting Crimper for D-Sub,Open Barrel suits Molex,JST,JAE

This is a nicely built crimper. I've used crimpers before but not this particular style. Amazon says, "comes with instructions", but not with my copy so I had to do a little trial and error to get good crimps without crushing the pin insert end of the connector. The numbers on my copy of the crimper differ slightly from the Amazon illustration with the largest being 2.0mm instead of the 1.9mm shown. No biggie. The tool has a good ratchet mechanism which is used to hold the connector in place while the wire end is inserted and then the crimp is finished. Makes great crimps. It's coated with some kind of lubricant which stains so be careful no to lay it on your prize tablecloth when taking it out of the protective plastic bag. Wiping it down doesn't help because there's more lubricant in the bag so it's coated again the next time you remove it. You probably don't want it lubricant free, because this lubricant probably contains a corrosion inhibitor to preserve the tool. Very good tool for the price and works well, but when crimping, be sure to check the insertion distance so the actual connector doesn't get crushed in the process.

I use this crimper now as my main tool. Mainly for RC style connectors. I bought it initially for making longer xbus connectors and it worked flawlessly for that then i have done sever servo leads which have turned out beautifully. The ratchet is nice just wish the release was a bit easier to get to. Overall it is now a must have for myself when crimping RC style wires.

Another great product from iCrimp! I needed these to replace an old worn out pair of crimpers I had for years. These work like the ones they replaced did when they were new. I also really like this design to where I can hold the crimpers vertically and keep the terminal ends in my line of sight while I'm inserting the wire. That makes for less of an opportunity to mess up the crimp! I like that!

These make great crimps for JST "zh" connectors. It crimps the pins without overly squashing them, so that they will fit into the connector immediately after crimping. I had previously tried one of the "SN-01BM" crimpers for these, but the anvils were a bit too large and squashed the pin too much, making it too wide to fit into the connector, without taking some small pliers and squeezing the sizes to reduce the width again. The crimps I get with this crimper also look significantly better than I had gotten with the SN-01BM, which is probably a function of having a more appropriately sized anvil for the pin. My only complaint about this crimper is that it doesn't feel nearly as good as the SN-01BM. The SN-01BM feels much more sturdy and well built, while the IWS-3220M feels flimsy and cheap in comparison. I also prefer the slight angle of the jaws on the SN-01MB. If only I could get this anvil set on a SN-01BM. Ah well :)

Ive used so many different crimpers in the past and this one absolutely blows them all out the water, I have had zero issue crimping any connectors ive thrown at it. I can't recommend this enough, especially for the smaller connectors like JST 1.0-2.54 yes it will even do 2.54mm connectors even though its not technically specified to do this.

This tool has been very consistent with JST-XH and JST-PH connectors. Easy to use, highly recommended.

I have been using this crimper for years now. I believe I ordered this in 2022 if I recall, and I used it again just a few days ago right before 2026. So, annually, almost four years of use. Maybe, there is an accuracy issue. Maybe there are quality control issues. But I am a professional - and use wire crimping tools often. Maybe not this one specifically but I know my crimps. So unless I did something to set the wire incorrectly, I have a 100% success rate with JST-XH and the even smaller JST-PH connectors. This thing just works and I am very happy with this crimper. Because of my personal experience with this tool, this is the one I recommend to hobbyist who need something for their 3D printer JST-XH stepper wires because not only are my results repeatable but it is shockingly cheap for a tool. I work in Aerospace, and when I have Junior technicians / Engineering technicians I always ask one simple question: Do you know how to crimp wires? They always say yes, because it seems a simple task. But there is a small skill gap. You need to know what you are doing on some level or else your simple crimps will be bad. Without fail, every single time, these junior engineers cannot crimp properly - they do not know what they are doing. So when I see reviews stating this tool is bad, inaccurate, doesn't crimp, etc, my personal experience says it is the user and not the tool. Most users do not know how to crimp wires - even if they think they can.

These work great! Took a minute to figure out which slot I needed for my pins, but pretty straight forward after that. I was alittled worried going into it, just with the small pins and not wanting to over crimp them or weaken then ect. No problem at all. Perfect results on my first set!

I tested this on the Molex SL crimp contacts (for the 0.100" square headers) and JST XH contacts (the typical LiPo battery balance connector) on 22AWG PVC wire. The 1.6mm opening works with the Molex SL and 2.0mm MOSTLY works with the JST XH. The caveat with the JST XH is that the insulation grips are crimped to be slightly too wide to fit into the crimp housing so you have to take a pair of pliers and ever so slightly squish it sideways. I looked at the crimps under a microscope and both the conductor and insulation fingers looked neatly and cleanly rolled for both types of contacts. I did pull tests but don't have a force scale nor the official pull-force test pliers from Molex. What I did was pull on the connector in a vise until the wire came out and then pulled on a luggage scale in the vice until it felt the same. I don't know what the JST XH spec is but the Molex SL spec is 8.82lbs for 22AWG. Therefore I used that specification for both connectors. My test runs for the Molex SL resulted in 50%, 75%, and 150% of the specified pull force. The test runs for the JST XH resulted in 50%, 60% and 100%. I am not sure how consistent the official crimper would be. I should also add that even though it does not have a positioner like the official tools, the die is of the proper thickness for the both Molex SL and JST XH so all you have to do is line up the end of the crimp (wire-side) with the edge of the die. So no need to position the crimp contact midway in the die. The parallel jaws and EDM cut die make a huge difference for these tiny contacts where any mos-positioning of the crimp terminal in the die, or inaccuracy in the die matters a lot more. The parallel jaws come straight down on the crimp contact which makes crimping much less of a hassle because the crimp terminal is much more likely to stay in position. With plier-type crimpers, the hinged jaws roll and tilt the crimp contact as it comes down. You can get away with a little tilt in larger contacts but with tiny contacts a little tilt throws things off a lot more and destroys the crimp. So other than having no positioner and needing a second slightly squeeze from the side for the JST XH contacts, you save But other than that it works at saves $500+ from the official crimp tools.

Plus petite que je n'imaginais, mais conforme. A l'air solide et précise. A tester en condition réelle.

Köpte den till JST SH men behövde till PicoBlade, visade sig att tången skall passa båda +++

Klasse Werkzeug. Für den 3D Drucker Gold wert.

Bought a blue crimper sometime ago and was never successful in crimping connectors without wasting connectors. Especially micro JST connectors, was persistent in trying100connectors and all failed. I almost concluded it is the fault on my part until I bought Iwiss crimper. I was successful with the first try.