F crimp

F-crimp is a type of solderless electrical crimp connection. It is not related to the F connector common in RF equipment.

It is sometimes referred to as open-barrel, which is technically a more general term including crimp types such as Weather Pack and Metri Pack.

F-crimp is a more mechanically robust crimp connection compared to the common barrel-crimp type readily available at retail locations (Radio Shack, Home Depot, etc.). It also has an optional second crimp section that crimps to the insulation, providing strain relief. Because of these characteristics, automobiles use F-crimp almost exclusively. F-crimp was devised to eliminate the need for soldered connections—crimping can be preferred to soldering in mass production because it is easier to reproduce reliable connections. These connections, when made with ratcheting application tooling, provide a solderless, "gas-tight" connection. F-crimp connections are never soldered as application of solder can lead to fracturing of the wire conductor.

The term F-crimp was originally coined by AMP Incorporated (now TE Connectivity), however terminals of this style are currently manufactured by multiple companies. Crimpers are available from multiple sources: manufacturers of the connectors typically offer industrial crimp devices for high volume production, and specialized hand tools companies such as Ideal, Eclipse and Greenlee (formerly Paladin) offer dies for hand crimpers. For instance, Ideal die #30-586 and Paladin die #2033 are designed for open barrel / F-crimp connectors. Non-AMP crimpers are available in "ratcheting" ("Certi-Crimp") and non-ratcheting versions, but only ratcheting types are suitable for production applications, with non-ratcheting types being suitable for occasional, or "field" repairs. Non-ratcheted crimps must never be used in "mission critical" applications.

Ideal, Eclipse and Harbor Freight, and Greenlee (formerly Paladin) Die compatibility

Certain Ideal and Eclipse interchangeable dies are in the same format as the Harbor Freight 97420 crimping tool's die receiver. Although the Harbor Freight tool is sold only for insulated terminal crimps, and additional dies are not sold by Harbor Freight, this tool will accept Ideal and Eclipse interchangeable dies for other format crimps. The Harbor Freight tool is ratcheting and is adjustable, just as are the Ideal and Eclipse tools.

The Greenlee (formerly Paladin) ratcheting crimper (and dies) appears to be equivalent to the Ideal, Eclipse and Harbor Freight functionality and interchangeable die format.

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References
    Professional hand tool options
    DIY alternatives
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