The O-Ring, cataloged under National Stock Number 5331-01-220-6149, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Rockford Powertrain Inc Div Powertrain Rockford, Inc.. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-220-6149 |
| Primary Part Number | 2-21266 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Rockford Powertrain Inc Div Powertrain Rockford, Inc. |
| Status | ACTIVE |
| Center Hole Diameter | 3.625 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2AT286 | Oshkosh Defense Llc (USA) |
| 2-21266 PRIMARY | Rockford Powertrain Inc Div Powertrain Rockford, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 2AT286 | 5/9 Secondary reference Oshkosh Corp |
| 2-762-596-21266 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5331-01-220-6149 is a O-Ring, manufactured by Rockford Powertrain Inc Div Powertrain Rockford, Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-220-6149 has 2 manufacturer part numbers on file: 2AT286 (Oshkosh Defense Llc), 2-21266 (Rockford Powertrain Inc Div Powertrain Rockford, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5331-01-545-0599. Verify interchangeability with system specifications before substitution.
Key specifications for 2-21266: Center Hole Diameter: 3.625 INCHES NOMINAL IN. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.