# Catalytic converter flange nuts, both ends (NA)

Canonical URL: https://miatatorque.com/spec/catalytic-converter-flange-nuts-na/

Applicability: NA

Confidence: single-source

30–41 ft·lb / 40–55 N·m

Always confirm against your factory manual. Match every restriction and follow all stages and procedure notes. Disputed claims must not be automatically resolved. The complete record below preserves every printed unit, source claim and procedure.

```json
{
  "id": "catalytic-converter-flange-nuts-na",
  "name": "Catalytic converter flange nuts, both ends (NA)",
  "aliases": [],
  "applies_to": [
    {
      "gen": "NA"
    }
  ],
  "kind": "torque",
  "torque": {
    "nm": [
      40,
      55
    ],
    "ftlb": [
      30,
      41
    ]
  },
  "confidence": "single-source",
  "sources": [
    {
      "source": "sdmc-list",
      "page": "Intake/Exhaust",
      "as_printed": "Cat converter nuts (both ends) 30-41 / 40-55",
      "torque": {
        "nm": [
          40,
          55
        ],
        "ftlb": [
          30,
          41
        ]
      },
      "note": "NA compiled list; does not independently establish applicability to every year of this spec.",
      "document": {
        "id": "sdmc-list",
        "tier": 4,
        "title": "San Diego Miata Club NA torque list (and its many copies)",
        "url": "https://sandiegomiataclub.org/miata_tech/na/na_torque_specs.html",
        "note": "Copied by miata.net, Beavis Motorsport, Buckeye Miata Club, MX5World and others. Counts as one source."
      }
    }
  ],
  "jobs": [],
  "system": "exhaust",
  "component": "exhaust-pipes",
  "componentName": "Exhaust pipes & sensors",
  "url": "https://miatatorque.com/spec/catalytic-converter-flange-nuts-na/"
}
```