Here's the plain-English version, without the consultant markup.
If you manufacture a defense article that appears on the U.S. Munitions List (USML), you're required to register with the Directorate of Defense Trade Controls (DDTC) — even if you never export anything.
That last part trips up almost everyone. The regulation is explicit. Under 22 CFR 122.1, "a manufacturer who does not engage in exporting must nevertheless register." Making the part is the trigger; shipping it overseas is a separate question. So "I just make the part and hand it to a U.S. prime" does not get you out of it.
DDTC registration is mostly administrative:
That part really is straightforward. The part that isn't is what comes next.
Primes routinely blanket-stamp everything "ITAR" to cover themselves. Some of those parts are genuinely USML; some are controlled under the EAR (a different rulebook, run by Commerce) with an ECCN; some aren't really controlled at all. The care you owe depends on which bucket the part is in. Don't take the stamp at face value — and don't assume it's nothing either. Get the classification confirmed in writing.
ITAR technical data — prints, models, specs — can't be accessed by a foreign person, and that's broad. This is the one that quietly bites small shops: it's not just who you hire, it's anyone who could see the data, and it includes your cloud. A controlled print in consumer Google Drive or Dropbox, or run through a general AI tool like ChatGPT, can count as an unauthorized export. (We go deep on this in the cloud & AI guide.) Keep controlled data off consumer cloud and general-purpose AI tools, and U.S. persons only.
A simple, honest log of who has copies of controlled data, plus a short written Technology Control Plan, is the backbone of being able to show you took it seriously.
Common, and usually wrong. If you manufacture a USML article — including forgings, castings, and machined bodies of a USML end item — the registration obligation can apply regardless of whether you export or who you sell to. Being a subcontractor doesn't automatically exempt you.
DepChain reads your drawings and BOMs, tells you which export rules apply to each part with the reasoning shown and the regulation cited, flags deemed-export and AI-tool risk, and generates your Technology Control Plan and audit trail. Join the waitlist for early access.
Bay Area shops get early access first. No spam, ever. Or email [email protected].
This guide is general information to help you ask the right questions — it is not legal advice and isn't a substitute for qualified export-control counsel. Fees and regulations change; verify specifics against primary sources (DDTC for ITAR, BIS for EAR) before you act.