| Manufacturer | ENGINEER |
|---|---|
| Part Number | PA-09 |
| Product Dimensions | 17.5 x 5.7 x 0.25 cm; 135 g |
| Item model number | PA-09 |
| Size | 極小端子用 |
| Colour | Red |
| Style | Single |
| Material | Body: High carbon steel (S55C); Grip: Elastomer |
| Pattern | Single Item |
| Power Source | No |
| Item Package Quantity | 1 |
| Handle material | Thermoplastic Elastomer (TPE) |
| Measurement System | metric |
| Certification | CE |
| Usage | Pro |
| Included Components | ENGINEER PA-09 crimping tool |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 135 g |
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Precision Universal Crimping Tool for Crimping Micro Crimp pins. Made in Japan. ENGINEER pa-09
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Purchase options and add-ons
| Brand | ENGINEER |
| Colour | Red |
| Item weight | 0.14 Kilograms |
| Product dimensions | 17.5L x 5.7W centimetres |
| Handle material | Thermoplastic Elastomer (TPE) |
About this item
- Crimps many different types of mini & micro crimp pins from the main terminal pin vendors.
- Professional results (& at a fraction of the price charged by the pin vendors for their own specific crimping tools).
- TPR (Thermoplastic Rubber) grips - a delight to hold & use.
- Made in Japan
Frequently bought together

Videos for similar products
From the manufacturer
ENGINEER PA-09 Crimping Tool with Super Precise Crimping Dies -- Crimp Open Barrel Contacts with a neat & professional finish!
The ENGINEER crimping pliers facilitiate the crimping of the conductor part of the pin and the insulating part of the pin individually/separately (therefore two crimping actions per pin), this allows the user to finely adjust the crimping force applied to suit (for example, more force applied when crimping the conductor, with less force applied on delicate insulation).
Additionally, this type of crimping arrangement allows the pliers to be more adaptable & versatile, thereby resulting in these pliers being able to crimp many different pin variants across several Manufacturers' pin products.
Operation & Features
Step 1.
Use the jaws at the tip of the pliers to slightly pinch in the lugs of the pin so they are parallel - like a U profile (when supplied the pins typically have more of a V profile)
Step 2.
Crimp the conductor part of the pin first. Establish the most appropriate die size for your pin (the pin should fit into the die neatly), then apply sufficient grip force so that the pin's lugs crimp firmly & securely onto the conductor wire.
Step 3
Now, crimp the insulator part of the pin. Once again, establish the most appropriate die for this part of your pin, then apply the appropriate amount of grip force so that the pin's lugs crimp securely onto the insulation. (the precisely engineered crimp dies will safely 'roll' the crimp pin lugs onto the insulation)
Spiral Spring & Locking Mechanism
The ENGINEER crimping pliers have spring grips and a locking latch mechanism to keep the jaws closed when not in use (for safe storage)
ENGINEER PA-09 SPECIFICATION
Product Information
Technical Details
Additional Information
| ASIN | B002AVVO7K |
|---|---|
| Customer Reviews |
4.6 out of 5 stars |
| Best Sellers Rank |
|
| Date First Available | 7 Feb. 2012 |
Warranty & Support
Feedback
Customer reviews
Customer Reviews, including Product Star Ratings, help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers find the crimping tool produces professional results and works well with various connectors, including JST-PH and Molex microfit 3.0 crimp connectors. The tool is comfortable to use and offers good value by saving money on dedicated manufacturers' tools. The alignment and crimping mechanism receive mixed feedback - while customers appreciate the alignment, one notes the 0.1mm crimp position isn't very good, and the mechanism requires two operations for each crimp.
AI Generated from the text of customer reviews
Customers find the crimping tool to be of excellent quality, producing professional results.
"Great product Good quality Fast delivery from japan Came with green tea free of charge as a thankyou..." Read more
"Perfect tool for crimping connectors. Well made, pressure is controlled by you not by a ratcheting mechanism - which is what you want...." Read more
"...The crimpers themselves are very well made, easy to use and produce a perfect tidy 2 point crimp...." Read more
"Great tool, well made and done what I expected of it. Recommended for molex connectors as its a fraction of the price of the Molex made tool." Read more
Customers find that the crimping tool works well, giving excellent results after some practice, with one customer specifically mentioning its effectiveness with JST and HRS crimps.
"Works well and gives reliable connections. I have mostly used it with massive wire, only a few times with stranded wire...." Read more
"not cheap but very good for JST-XH connectors" Read more
"I have tried several JST socket crimps with this tool and it works well because it is narrower and less likely to squash the socket and barb in..." Read more
"Does the job well - each header takes two crimps, and the small ones can be hard to release without bending, but it's a darn sight cheaper than the..." Read more
Customers find the crimping tool easy to use, with one mentioning it makes creating JST connectors much easier.
"...The are easy to use you crimp the wire first then the insulation, perfect every time. Good quality will last a lifetime...." Read more
"...These however are precise, i find it very hard to over crimp with them if I have the right slot selected and yet they produce a solid crimp, yes you..." Read more
"...I've used it to crimp JST XH and Dupont terminals. It requires two actions to crimp, one for the bare part of the wire and one for the parts that..." Read more
"...pliers and are without doubt better than any others i have used, crimps are quick and neat every time, you get what you pay for with these pliers." Read more
Customers find the crimping tool effective for various connectors, including JST XH, Dupont, and Apple pentalobe screws.
"...PA-09, which is what I bought, can just about crimp 18AWG (I think the wire is 24AWG in the photos), but I would recommend 20AWG or smaller with..." Read more
"Great tool, well made and done what I expected of it. Recommended for molex connectors as its a fraction of the price of the Molex made tool." Read more
"An absolute must for RC/Drones/Electronics enthusiast. I use it to crimp connectors for batteries, Arduinos, drones. etc...." Read more
"Excellent tool for crimping JST and Dupont connectors. The results are great and professional in appearance." Read more
Customers find the crimping tool comfortable to use, with one mentioning that the grip is particularly pleasant.
"...In summary: A well made tool that is slim, lightweight and comfortable to use but there are cheaper options available with more features for more..." Read more
"...These are a joy to use. Crimp the insulation first, then the conductors. Perfect crimps every time after a bit of practice...." Read more
"Not at the high end of crimpers but less awkward than most and does the job. That's all you can ask." Read more
"...to get the hang of using the things, but once mastered they become a pleasure to use...." Read more
Customers have mixed opinions about the crimping tool's value for money, with some finding it worth the price and appreciating that it saves money compared to dedicated manufacturers' tools, while others consider it expensive.
"Worth every penny, a quality precision tool." Read more
"...There are expensive and was posted from Japan, and I only need for a few JST crimps for hobby projects, but the alternatives are cheap Chinese..." Read more
"Very good crimp tool for the price. Nicely made and the handles are beautiful to hold...." Read more
"...video and decided to pay the extra and I have to admit they are worth every penny." Read more
Customers have mixed experiences with the alignment of the crimping tool, with some finding it well-aligned, while others report issues with the crimped ends getting stuck and frequent jamming.
"...this tool and it works well because it is narrower and less likely to squash the socket and barb in crimp than some the other tools I've used...." Read more
"...for crimping anything dupont and molex, albeit the crimped ends are consistently getting stuck in the teeth, crimping advertised JST however, XHP..." Read more
"...It is very effective and I have redone the plugs on connectors. I have tested them on the multimeter and each is perfect. I love this thing!" Read more
"...It still is necessary to position the crimp carefully and hold it straight while crimping, so the tool isn't quite perfect, hence only 4 stars...." Read more
Customers have mixed opinions about the crimping mechanism of the tool, with some appreciating its action and mechanism, while one customer notes that it requires two operations for each crimp.
"Outstanding quality tool. The crimping action and mechanism is something to be admired...." Read more
"...by the Dupont or Molex "official" tools and there is no ratchet to ensure you use the correct pressure - but you have to bear in mind they..." Read more
"...There are four jaw sockets to choose from and if you follow the clear instructions, you get a good crimp every time. I am very impressed." Read more
"...For the JST-XH crimps they work well but need two operations for each crimp and are dependent on the operator applying the correct amount of..." Read more
Reviews with images
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Top reviews from United Kingdom
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- Reviewed in the United Kingdom on 16 August 2020Style Name: 2) For small and medium terminalsVerified PurchaseAnother excellent quality tool from the Japanese 'Engineer' company.
These are a pair of manual crimpers for individual connection pins, such as Jst or Dupont pins. They are spring opening, with a catch to keep them closed when not in use. They come on a blister card, which has some helpful instructions and sizes on the back. (Photo).
There is nothing fancy about them.
There is no ratchet mechanism, no holding mechanism. All you get are a pair of manual grip crimpers. (Photo).
Fortunately, none of that is really necessary and these work extremely well.
In fact they are the best I've used.
You place the pin in the relevant sized hole and squeeze. You do the conductor first, then move the pin to crimp the insulation.
It works extremely well. Just make sure you use the right size hole.
It can be fiddly, so it's a massive advantage if your pins are still attached to their manufacturing strip.
You can still crimp the pins if they are individually loose, but it is a lot more fiddly.
'Engineer' do 3 different sizes of these crimpers.
I personally think that these, the PA-20, are the most useful. I have never had to use a size bigger than 2.3mm or smaller than 1.6mm in all my years, so, I can't imagine needing a different pair.
Your circumstances may be different, but if you are crimping standard 2.54mm pitch pins, these are the ones you want.
Overall, these are a great set of crimpers, that work really well.
Yes, they are a little expensive, but with nothing to go wrong, there is no reason why these shouldn't last a life time.
Recommended.
I hope you found this review helpful.
5.0 out of 5 starsAnother excellent quality tool from the Japanese 'Engineer' company.A simple set of crimpers, that work extremely well.
Reviewed in the United Kingdom on 16 August 2020
These are a pair of manual crimpers for individual connection pins, such as Jst or Dupont pins. They are spring opening, with a catch to keep them closed when not in use. They come on a blister card, which has some helpful instructions and sizes on the back. (Photo).
There is nothing fancy about them.
There is no ratchet mechanism, no holding mechanism. All you get are a pair of manual grip crimpers. (Photo).
Fortunately, none of that is really necessary and these work extremely well.
In fact they are the best I've used.
You place the pin in the relevant sized hole and squeeze. You do the conductor first, then move the pin to crimp the insulation.
It works extremely well. Just make sure you use the right size hole.
It can be fiddly, so it's a massive advantage if your pins are still attached to their manufacturing strip.
You can still crimp the pins if they are individually loose, but it is a lot more fiddly.
'Engineer' do 3 different sizes of these crimpers.
I personally think that these, the PA-20, are the most useful. I have never had to use a size bigger than 2.3mm or smaller than 1.6mm in all my years, so, I can't imagine needing a different pair.
Your circumstances may be different, but if you are crimping standard 2.54mm pitch pins, these are the ones you want.
Overall, these are a great set of crimpers, that work really well.
Yes, they are a little expensive, but with nothing to go wrong, there is no reason why these shouldn't last a life time.
Recommended.
I hope you found this review helpful.
Images in this review
- Reviewed in the United Kingdom on 31 December 2021Style Name: SingleVerified PurchaseI have been using this now for a couple of cheers to crimp JST pins onto ribbon cables, I love the JST connectors but I really do not like crimping them.
There's a definite "knack" to using this tool, and even having crimped thousands of these, I still find them very fiddly to crimp.
The JST crimps have 2 tab sections, one is used to crimp to the insulator ensuring that the cable is held in place, and the second is the actual terminal itself.
The method that works for me is:
1.) bend the insulator tabs inwards very slightly with needle nosed pliers, if you don't do this, you won't be cable to perform the actual crimp.
2) place the crimp into this tool, I rotate the tool in my hand so the legend is facing away, I need to do this is ensure that I'm only crimping the insulator and not the other tabs, I gently close the tool slightly to grab the crimp, then rotate the tool back so the legend is visible, the back of the connector is now facing me.
3.) As I'm looking at the rear of the crimp, I insert t he cable into the crimp and look at the other side to make sure that I haven't pushed the cable in too far or not enough, it should be positioned so that the cable insulator is touching the outer tab, and the conductor is touching the inner tabs.
4.) very carefully I close the tool to perform the crimp.
At this point, you might get a good crimp, or, you might end up with the crimp rotating in the tool jaws, in which case you have to reset everything and try again, the final problem you may get is that the tabs just didn't fold properly, in which case you need to remove the crimp/cut it off/trim the cable and so on.
If the crimp was OK, then you repeat the process again, and crimp the inner tabs, just make sure that you check that you are not crushing the end of the crimp, if you do the pin won't be usable.
Other issues also include the crimp bending.
It works reasonably well most of the time, but sometimes they can be infuriating, especially when the tabs don't fold properly.
This is a common issue I've read with this tool, but this is one of the best tools for these crimps, so I kind of just live with these issues.
Take your time, and inspect everything before you make the actual crimp.
It's also well worth having a multimeter set to "beep" mode, after crimping you should check that the cable is ok, sometimes the cable may more and the conductor might make no or poor contact.
5.0 out of 5 starsI have been using this now for a couple of cheers to crimp JST pins onto ribbon cables, I love the JST connectors but I really do not like crimping them.Well made, but not without problems.
Reviewed in the United Kingdom on 31 December 2021
There's a definite "knack" to using this tool, and even having crimped thousands of these, I still find them very fiddly to crimp.
The JST crimps have 2 tab sections, one is used to crimp to the insulator ensuring that the cable is held in place, and the second is the actual terminal itself.
The method that works for me is:
1.) bend the insulator tabs inwards very slightly with needle nosed pliers, if you don't do this, you won't be cable to perform the actual crimp.
2) place the crimp into this tool, I rotate the tool in my hand so the legend is facing away, I need to do this is ensure that I'm only crimping the insulator and not the other tabs, I gently close the tool slightly to grab the crimp, then rotate the tool back so the legend is visible, the back of the connector is now facing me.
3.) As I'm looking at the rear of the crimp, I insert t he cable into the crimp and look at the other side to make sure that I haven't pushed the cable in too far or not enough, it should be positioned so that the cable insulator is touching the outer tab, and the conductor is touching the inner tabs.
4.) very carefully I close the tool to perform the crimp.
At this point, you might get a good crimp, or, you might end up with the crimp rotating in the tool jaws, in which case you have to reset everything and try again, the final problem you may get is that the tabs just didn't fold properly, in which case you need to remove the crimp/cut it off/trim the cable and so on.
If the crimp was OK, then you repeat the process again, and crimp the inner tabs, just make sure that you check that you are not crushing the end of the crimp, if you do the pin won't be usable.
Other issues also include the crimp bending.
It works reasonably well most of the time, but sometimes they can be infuriating, especially when the tabs don't fold properly.
This is a common issue I've read with this tool, but this is one of the best tools for these crimps, so I kind of just live with these issues.
Take your time, and inspect everything before you make the actual crimp.
It's also well worth having a multimeter set to "beep" mode, after crimping you should check that the cable is ok, sometimes the cable may more and the conductor might make no or poor contact.
Images in this review
- Reviewed in the United Kingdom on 27 April 2025Style Name: SingleVerified PurchaseI couldn't find anything else at all for crimping microfit connectors, except for the £600 molex tool, and maybe except for the IWISS, which has some pretty mixed reviews and still costs about £20. This is one of the nicer tools i've owned and it should last a long time. The grip is very comfortable and the tension is carefully set. if you do a lot of crimping then this will save you a lot of time and discomfort. PA-09, which is what I bought, can just about crimp 18AWG (I think the wire is 24AWG in the photos), but I would recommend 20AWG or smaller with these. It makes the process a lot more easier, but you still have to actually crimp the wire which is a skill I have not mastered
I couldn't find anything else at all for crimping microfit connectors, except for the £600 molex tool, and maybe except for the IWISS, which has some pretty mixed reviews and still costs about £20. This is one of the nicer tools i've owned and it should last a long time. The grip is very comfortable and the tension is carefully set. if you do a lot of crimping then this will save you a lot of time and discomfort. PA-09, which is what I bought, can just about crimp 18AWG (I think the wire is 24AWG in the photos), but I would recommend 20AWG or smaller with these. It makes the process a lot more easier, but you still have to actually crimp the wire which is a skill I have not mastered
Images in this review
- Reviewed in the United Kingdom on 5 January 2022Style Name: 2) For small and medium terminalsVerified PurchaseI need a tool that can crimp both JST-XH and Dupont connectors. These aren't it but to be fair they don't list Dupont or equivalent so that's not a critique of tool but just for awareness if that's functionality that you need.
For the JST-XH crimps they work well but need two operations for each crimp and are dependent on the operator applying the correct amount of pressure whereas a ratchet tool only needs one and will always turn out a well closed crimp. On the flip side of that though, because each crimp requires two operations the tool is more open than a comparable ratchet tool and so gives better visibility of the work and consequently fewer failures than a ratchet tool. You pays your money and makes your choice as the saying goes.
If you need a slim and lightweight crimp tool for occasional use without consuming a lot of toolbox space or adding a lot of weight then these are good quality and would serve you well but for frequent use and/or Dupont connectors I've found the Preciva Dupont crimping tool will handle both JST-XH & Dupont connectors (as well as some others), has a ratchet mechanism (which I personally prefer), comes with a set of JST & Dupont headers, crimps & housings and came in about £5 cheaper than this tool.
In summary: A well made tool that is slim, lightweight and comfortable to use but there are cheaper options available with more features for more frequent use.
Top reviews from other countries
Sebastian lipsReviewed in Sweden on 15 March 20233.0 out of 5 stars Väldigt liten
Style Name: 2) For small and medium terminalsVerified PurchaseLite liten
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Amazon カスタマーReviewed in Japan on 2 August 20255.0 out of 5 stars 綺麗に出来ました
Style Name: SingleVerified PurchaseQIコネクターで圧着しましたが本当に綺麗に圧着出来ました。
多少、慣れが必要かと思います。
巻き込む金具が90度以上開いてると、圧着ペンチの溝に入りにくいので事前に少しペンチで閉じておいた方がうまくやり易い気がしました。
線を切ったり被覆を取ったりする機能はありません。別の工具で対応する必要があります。
-
JuanReviewed in Spain on 21 December 20185.0 out of 5 stars Fantástica herramienta de crimprado
Style Name: 2) For small and medium terminalsVerified PurchaseCrimpadora en dos pasos. De calidad excelente, se ajusta a la mano perfectamente.
Thomas RoyReviewed in Australia on 21 February 20255.0 out of 5 stars Exactly what I was looking for
Style Name: 3) For small and medium terminals (supports long barrel terminals)Verified PurchaseThis is exactly the tool I have been after. I haven't been able to find a tool to crimp a specific type of terminal I use regularly but this has worked a treat. Basic easy to use tool allowing for perfect crimps.
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Eric PascualReviewed in France on 23 May 20205.0 out of 5 stars un peu cher, mais très bien adapté aux cosses miniatures
Style Name: SingleVerified PurchaseFait un travail précis et de qualité pour le sertissage de cosses miniatures pour connecteurs JST et semblables. L'opération doit se faire en deux temps pour la partie conducteur et la partie gaine du fil, et la pince a l'épaisseur appropriée pour cela.
J'utilisais jusqu'ici un modèle plus gros (pour cosses de connecteur type MOLEX KK), dont les mors ont deux sections différentes permettant le sertissage des deux parties en une seule opération, mais leur épaisseur est trop importante pour les cosses miniatures.
Vue la simplicité du mécanisme de la pince, il ne devrait pas y avoir de problème de durabilité.
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Product Summary: Precision Universal Crimping Tool for Crimping Micro Crimp pins. Made in Japan. ENGINEER pa-09
From ENGINEER
4.6 out of 5 stars, 2,349 ratings
Customer reviewsPrice
One-time purchase: £37.99
All prices include VAT.
About this Item
- Crimps many different types of mini & micro crimp pins from the main terminal pin vendors.
- Professional results (& at a fraction of the price charged by the pin vendors for their own specific crimping tools).
- TPR (Thermoplastic Rubber) grips - a delight to hold & use.
- Made in Japan
Product description
Options Available
Style Name
- 2) For small and medium terminals
- 3) For small and medium terminals (supports long barrel terminals)
- + Crimping Pliers
- Single
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