StacksVerified U.S. regulatory reference

16 CFR §1203.9

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
The headforms used for testing shall be selected from sizes A, E, J, M, and O, as defined by DRAFT ISO/DIS 6220-1983, in accordance with § 1203.10. Headforms used for impact testing shall be rigid and be constructed of low-resonance K-1A magnesium alloy.