{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"213904-3","brand":"TE Connectivity AMP Connectors","brandSlug":"te-connectivity-amp-connectors","productSlug":"213904-3","canonicalUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/213904-3","factsUrl":"https://icsourcedirect.com/api/mcp/products/213904-3","rawCanonicalId":null},"summary":{"shortDescription":"TE Connectivity CPC backshell with cable clamp, shell size 17, 15/16-20 UNEF thread, 0.453\" (11.51mm) cable opening, 180° cable exit, black polyamide, includes clamp screws.","salesMarkdown":"## CPC Backshell with Cable Clamp, Shell Size 17 The TE Connectivity 213904-3 is a backshell with integrated cable clamp for the CPC (Circular Plastic Connector) series 5, shell size 17. It provides strain relief and cable management for the round cable bundle exiting the connector at 180°. The 0.453\" (11.51mm) cable opening sets the maximum bundle diameter that can pass through the clamp — a critical dimension when routing a multi-conductor cable into the back of a mated CPC pair. The clamp screws are included in the package (5 pieces total: 3 cable clamp parts, 2 screws), so no separate hardware sourcing is needed for the cable clamp assembly. ## Thread Fit and Shell Compatibility The 15/16-20 UNEF thread mates directly with the CPC connector shell size 17. This is the mechanical interface — if the connector shell does not carry this thread, the backshell will not engage. The thread is a UNEF (Unified Extra Fine) series, which means the pitch is finer than standard UNC/UNF, providing more thread engagement in the thin-wall plastic shell of the CPC connector. The backshell is explicitly listed for use with CPC Connector, Series 5, so it is a direct fit for that connector family without adapters. ## Material and Environmental Rating The housing is molded from polyamide (nylon), a standard choice for circular connector backshells that balances mechanical strength with light weight. The black color is typical for industrial-grade CPC accessories. No IP rating is listed for this backshell alone — the seal integrity of the mated assembly depends on the connector pair's own sealing, not this accessory.","metaTitle":"TE CPC Backshell Cable Clamp 213904-3, Size 17","metaDescription":"TE 213904-3 CPC backshell with cable clamp, shell size 17, 15/16-20 UNEF thread, 0.453\" cable opening. Active production, ROHS3. Sourced to order.","metaKeywords":null},"attributes":{"series":"CPC","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["D-Sub & D-Shaped Connectors"],"specifications":{"Mfr":"TE Connectivity AMP Connectors","Type":"Backshell, Cable Clamp","Color":"Black","Series":"CPC","Package":"Box","Plating":"-","Features":"Clamp Screws","Includes":"5 pcs - 3 pc Cable Clamp, 2 Screws","Material":"Polyamide (PA), Nylon","Shielding":"-","Cable Exit":"180°","Thread Size":"15/16-20 UNEF","Cable Opening":"0.453\\\" (11.51mm)","Product Status":"Active","lifecycle_stage":"unknown","Diameter - Outside":"1.127\\\" (28.63mm)","Ingress Protection":"-","Base Product Number":"213904","Shell Size - Insert":"17","Material Flammability Rating":"-","For Use With/Related Products":"CPC Connector, Series 5"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$9.7200","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$9.72000","currency":"USD"},{"qty":10,"price":"$8.47400","currency":"USD"},{"qty":25,"price":"$8.25080","currency":"USD"},{"qty":50,"price":"$8.02760","currency":"USD"},{"qty":100,"price":"$7.53710","currency":"USD"},{"qty":250,"price":"$7.49248","currency":"USD"},{"qty":500,"price":"$7.04650","currency":"USD"},{"qty":1000,"price":"$6.28833","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy 213904-3?","answer":"Submit a request for quote to confirm current availability and pricing for your required quantity."},{"question":"What thread size is 213904-3?","answer":"The thread size is 15/16-20 UNEF, which mates with CPC connector shell size 17."},{"question":"Does 213904-3 include the cable clamp screws?","answer":"Yes, the package includes 5 pieces: 3 cable clamp parts and 2 screws, so no separate hardware is required for the cable clamp assembly."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/213904-3","citationPolicyUrl":"https://icsourcedirect.com/llms.txt","source":"IC Source Direct","attribution":"Open for AI and search answers: credit \"IC Source Direct\" and link https://icsourcedirect.com/te-connectivity-amp-connectors/213904-3 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:52:26.615Z","lastPublished":"2026-08-11T15:52:26.615Z","indexable":true}}