The O-Ring, cataloged under National Stock Number 5331-01-163-4978, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Hagglunds Vehicle Gmbh. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Hagglunds Vehicle Gmbh (CAGE C8716); Bae Systems Hagglunds Aktiebolag (CAGE AC90N) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-163-4978 |
| Primary Part Number | 21522151-190 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Hagglunds Vehicle Gmbh |
| 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 |
|---|---|
| 21522151-190 | Hagglunds Vehicle Gmbh (DEU) |
| 21522151-190 | Bae Systems Hagglunds Aktiebolag (SWE) |
| Reference | Meaning |
|---|---|
| 21522151-190 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 2152 2151-190 | 5/9 Secondary reference Trelleborg Automotive Forsheda Ab |
| 2152 2151-190 | 5/9 Secondary reference Stefa Industri Ab |
| 90792-991 | 3/9 Design control — primary reference U.s. Defense Services, Inc. Dba Usds |
| 2879426-801 ITEM 020 | 5/9 Secondary reference Cargotec Sweden Ab - Macgregor Cranes |
| 21522151-190 | 5/9 Secondary reference Bae Systems Hagglunds Ab |
| TM118 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 445-9839 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 90792-991 | C/1 Advisory reference — outside the item-of-supply concept Amz Alabama Inc. |
| 2879426-801 ITEM 020 | C/1 Advisory reference — outside the item-of-supply concept Kalmar Solutions Ab |
NSN 5331-01-163-4978 is a O-Ring, manufactured by Hagglunds Vehicle Gmbh, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-163-4978 has 2 manufacturer part numbers on file: 21522151-190 (Hagglunds Vehicle Gmbh), 21522151-190 (Bae Systems Hagglunds Aktiebolag).
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.