The O-Ring, cataloged under National Stock Number 5331-01-673-6384, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Oshkosh Defense Llc. Government technical data includes 7 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-673-6384 |
| Primary Part Number | 4380816 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Oshkosh Defense Llc |
| Status | ACTIVE |
| Temp Rating | 302.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 2.50 MILLIMETERS MINIMUM AND 2.59 MILLIMETERS MAXIMUM MM |
| Outside Diameter | 26.0 MILLIMETERS NOMINAL MM |
| Hardness Rating | 70.0 SHORE DUROMETER A NOMINAL |
| Material Document and Classification | HYDROGENATED NITRILE BUTADIENE RUBBER MFR REF SINGLE MATERIAL RESPONSE |
| Center Hole Diameter | 20.78 MILLIMETERS MINIMUM AND 21.22 MILLIMETERS MAXIMUM MM |
| Material | RUBBER BUTADIENE NITRILE |
| 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 |
|---|---|
| 4380816 PRIMARY | Oshkosh Defense Llc (USA) |
NSN 5331-01-673-6384 is a O-Ring, manufactured by Oshkosh Defense Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-673-6384 has 1 manufacturer part number on file: 4380816 (Oshkosh Defense Llc).
Key specifications for 4380816: Temp Rating: 302.0 FAHRENHEIT DEGF; Cross-Sectional Height: 2.50 MILLIMETERS MINIMUM AND 2.59 MILLIMETERS MAXIMUM MM; Outside Diameter: 26.0 MILLIMETERS NOMINAL MM; Hardness Rating: 70.0 SHORE DUROMETER A NOMINAL. 7 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.