Contact's crimping - MIL circular connectors

This article will help you define tooling and procedure for crimping your signal and power contacts.


First of all, in order to define the right tooling, you need to know which sizes of contacts are used in your connector. You will usually find this information in the first pages of our catalogues: 


You will then be able to find out corresponding tooling for theses contacts sizes.


MIL-DTL-38999 connectors and derivatives




This table applies to M39029 type signal and power contacts.

For other types as high speed contacts (coax, twinax, quadrax...), or EN3155 you will find this information:

  • In the associated sections of our catalog: Contacts
  • In our brochures, which can be consulted on our website by clicking here

Don't hesitate to contact us if you have any question. 


For the correct use of the tooling, you can consult these video tutorials: :

  • For signal contacts:

  • For other contact types (power, coax, twinax, quadrax, octomax...) more video tutorials are available online, accessible through this link: Video tutorials 


For further information concerning these contact's cabling instructions, please consult us.


Powersafe Connectors





See our brochure on page 12 : Catalogue_powersafe (


Crimping procedure is identical to MIL-DTL-38999 connectors when the manual crimping plier is used.


2M Micro Miniature connectors


Note : These tools must be bought through distribution channel.

You'll find this information on page 39 of our catalog : 2M Micro Miniature (


Crimping procedure is identical to MIL-DTL-38999 connectors.


PT/451 connectors



Crimp contact procedure for PT/451 connectors is available on page 71 of the catalogue : PT/451 products (

It's also identical as MIL-DTL-38999 connectors.


For the insertion of the contacts into the connector's cavities, you can refer to following article: Instructions, tutorials and tools for assembly - MIL circular connectors



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