The O-Ring, cataloged under National Stock Number 5331-01-165-4660, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Kalmar Solutions Ab. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | Kalmar Solutions Ab (CAGE A184N); Bae Systems Hagglunds Aktiebolag (CAGE AC90N) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-165-4660 |
| Primary Part Number | 21522115-830 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Kalmar Solutions Ab |
| 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 |
|---|---|
| 21522115-830 | Kalmar Solutions Ab (SWE) |
| 21522115-830 | Bae Systems Hagglunds Aktiebolag (SWE) |
| Reference | Meaning |
|---|---|
| 2152 2115-830 | 5/9 Secondary reference Macgregor Usa Inc. Div Macgregor Usa |
| 2152 2115-830 T AKT 287 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 21522115-830 | 5/9 Secondary reference Bae Systems Hagglunds Ab |
| 21522115-830 | 5/9 Secondary reference Cargotec Sweden Ab - Macgregor Cranes |
| 445-9776 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 2152-2115-830 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 90778-991 | 3/9 Design control — primary reference U.s. Defense Services, Inc. Dba Usds |
| 2152 2115-830 TAKR 287 | 5/9 Secondary reference Macgregor Usa Inc. Div Macgregor Usa |
NSN 5331-01-165-4660 is a O-Ring, manufactured by Kalmar Solutions Ab, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-165-4660 has 2 manufacturer part numbers on file: 21522115-830 (Kalmar Solutions Ab), 21522115-830 (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.