49 CFR § 173.144
Other Regulated Material (ORM)—Definitions
November 18, 2020
Until December 31, 2020 and for the purposes of this subchapter, “ORM-D material” means a material such as a Consumer commodity, Cartridges, small arms, Cartridges, power devices (used to project fastening devices), Cartridges for tools, blank, and Cases, cartridge, empty with primer, which, although otherwise subject to the regulations of this subchapter, presents a limited hazard during transportation due to its form, quantity and packaging. The article or substance must be a material for which exceptions are provided in Column (8A) of the §172.101 Hazardous Materials Table.
[78 FR 65481, Oct. 31, 2013]