The O-Ring, cataloged under National Stock Number 5331-01-168-1506, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Bae Systems Hagglunds Aktiebolag. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Bae Systems Hagglunds Aktiebolag (CAGE AC90N); Amz Alabama Inc. (CAGE 076M6) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-168-1506 |
| Primary Part Number | 21522115-405 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Bae Systems Hagglunds Aktiebolag |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 21522115-405 | Bae Systems Hagglunds Aktiebolag (SWE) |
| 2152 2115-405 | Amz Alabama Inc. (USA) |
| Reference | Meaning |
|---|---|
| 90761-991 | 3/9 Design control — primary reference U.s. Defense Services, Inc. Dba Usds |
| 21522115-405 | 5/9 Secondary reference Bae Systems Hagglunds Ab |
NSN 5331-01-168-1506 is a O-Ring, manufactured by Bae Systems Hagglunds Aktiebolag, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-168-1506 has 2 manufacturer part numbers on file: 21522115-405 (Bae Systems Hagglunds Aktiebolag), 2152 2115-405 (Amz Alabama Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5331-01-492-3579. Verify interchangeability with system specifications before substitution.
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.