The O-Ring, cataloged under National Stock Number 5331-01-424-1993, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Bae Systems Hagglunds Aktiebolag. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-424-1993 |
| Primary Part Number | 2152 2101-438 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Bae Systems Hagglunds Aktiebolag |
| Status | ACTIVE |
| Cross-Sectional Height | 3.0 MILLIMETERS NOMINAL MM |
| Hardness Rating | 70.0 SHORE DUROMETER A NOMINAL |
| Center Hole Diameter | 129.5 MILLIMETERS NOMINAL MM |
| Material | RUBBER |
| 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 |
|---|---|
| 2152 2101-438 | Bae Systems Hagglunds Aktiebolag (SWE) |
| Reference | Meaning |
|---|---|
| 463736/6770020 | 3/9 Design control — primary reference Trelleborg Ersmark Ab |
| 463736/6770020 | C/1 Advisory reference — outside the item-of-supply concept Trelleborg Ersmark Ab |
| 2152 2101-438 | 5/9 Secondary reference Bae Systems Hagglunds Ab |
| 21-10608 ITEM 22 | 5/9 Secondary reference Macgregor Sweden Ab |
| 463736 | C/1 Advisory reference — outside the item-of-supply concept Trelleborg Ersmark Ab |
| 463736 | 5/9 Secondary reference Trelleborg Ersmark Ab |
| 471-5939 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5331-01-424-1993 is a O-Ring, manufactured by Bae Systems Hagglunds Aktiebolag, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-424-1993 has 1 manufacturer part number on file: 2152 2101-438 (Bae Systems Hagglunds Aktiebolag).
Key specifications for 2152 2101-438: Cross-Sectional Height: 3.0 MILLIMETERS NOMINAL MM; Hardness Rating: 70.0 SHORE DUROMETER A NOMINAL; Center Hole Diameter: 129.5 MILLIMETERS NOMINAL MM; Material: RUBBER. 4 specifications are 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.