The TE Connectivity 206512-5 is a backshell with integrated cable clamp for the CPC (Circular Plastic Connector) series, shell size 23. It provides strain relief and environmental sealing at the cable exit of a mated CPC connector pair. The 1 3/8-18 UNEF thread mates directly onto the connector's coupling ring threads, securing the backshell in place.
Thread Size and Cable Opening — The Fit Check
The thread size is 1 3/8-18 UNEF, a UNEF (Unified Extra Fine) thread common to TE CPC shell size 23 connectors. This is the only thread pitch that mates with the corresponding CPC plug or receptacle — there is no adapter ring or thread reducer in this kit. The cable opening measures 1.125" (28.58 mm) in diameter, which sets the maximum cable bundle OD that can pass through the clamp. For a given harness, the bundle diameter must fit within this opening with enough clearance for the clamp screws to compress the fingers against the cable jacket. The outside diameter of the backshell body is 1.600" (40.64 mm), which is the envelope dimension for panel cutout clearance or boot fit.
What's in the Kit and How It Goes Together
The 206512-5 ships as a kit containing seven pieces: five pieces form the cable clamp assembly, and two are the clamp screws. The clamp screws are the hardware that tightens the clamp fingers around the cable jacket — they are included, so no separate hardware procurement is needed. The color is black, which is the typical finish for CPC backshells and matches the standard CPC connector housing color.
Compatibility — Which Connectors It Fits
This backshell is designed for use with TE CPC connectors of shell size 23. The "For Use With/Related Products" designation is CPC Connectors, which covers the full CPC series — both the standard CPC and the CPC 2-piece connector families — as long as the shell size is 23. The thread interface (1 3/8-18 UNEF) is the same across all TE CPC size 23 connectors, so this backshell mates with any TE CPC plug or receptacle of that shell size, regardless of the contact arrangement or circuit count within that shell.