# Closure.

**Citation:** 49 CFR 178.364-3  
**Type / status:** regulation / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2003-10-01  
**Published:** Not stated

Closure for the protective overpack must be provided by at least 4 mild steel hinges formed from minimum 2.5 cm (1 inch) × 5 mm (3/16 inch) bar stock. Hinge pins must be minimum 6 mm (1/4 inch) diameter by 13.3 cm (51/4 inches) long mild steel rod drilled at both ends for cotter pins.

[66 FR 45389,

## Document text

Closure for the protective overpack must be provided by at least 4 mild steel hinges formed from minimum 2.5 cm (1 inch) × 5 mm (3/16 inch) bar stock. Hinge pins must be minimum 6 mm (1/4 inch) diameter by 13.3 cm (51/4 inches) long mild steel rod drilled at both ends for cotter pins.

[66 FR 45389, Aug. 28, 2001]

## Provenance

- Official: Yes
- Source: <https://www.govinfo.gov/app/details/CFR-2003-title49-vol2/CFR-2003-title49-vol2-sec178-364-3>
- Source ID: `govinfo-cfr`
- SHA-256: `56f6ebe165d8cfa30d6a358777b2580923c3abe06ddcbc94a9255c84483af862`
- Retrieved: 2026-08-13T06:37:29.399Z
- Exported: 2026-08-24T03:12:22.508Z
- Document slug: `49-cfr-178-364-3`

### Source metadata

```json
{
  "part": "178",
  "section": "178.364-3",
  "subpart": "Subpart K—Specifications for Packagings for Class 7 (Radioactive) Materials",
  "annualEdition": 2003,
  "revisedAsOf": "2003-10-01",
  "govInfoPackage": "CFR-2003-title49-vol2",
  "legalStatus": "official-annual-cfr-edition",
  "effectiveDateNote": null,
  "historicalAnchor": true,
  "historicalAnchorNote": "The section appears in an official annual CFR edition but is absent from the connected current eCFR corpus.",
  "jurisdiction": "US"
}
```