StacksVerified U.S. regulatory reference

46 CFR §64.51

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Any part of a tank furnished by an outside supplier may not be used in a tank unless it bears—
  1. (a)The Coast Guard symbol;
  2. (b)The Marine Inspection Office identification letters;
  3. (c)The word “part”;
  4. (d)The manufacturer's name and serial number; and
  5. (e)The design pressure.