The O-Ring, cataloged under National Stock Number 5331-01-419-8407, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 5331-01-419-8407 |
| Primary Part Number | 211040981 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Cross-Sectional Height | 3.706 INCHES MINIMUM AND 3.762 INCHES MAXIMUM IN |
| Center Hole Diameter | 3.706 INCHES MINIMUM AND 3.762 INCHES MAXIMUM IN |
| Material | RUBBER FLUOROCARBON CLASS FPM |
| 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 |
|---|---|
| 211040981 PRIMARY | Naval Sea Systems Command (USA) |
| M83485/1-240 | Leonardo Spa Helicopters Division - Production Site (ITA) |
| M83485/1-240 PRIMARY | Sae International Dba Sae International (USA) |
| 77358 | Hampton Hydraulics, Llc (USA) |
| 175789 REV B ITEM 16 | Hampton Hydraulics, Llc (USA) |
| Reference | Meaning |
|---|---|
| 524-6985906-F129 | 5/1 Secondary reference Naval Sea Systems Command |
| M83485/1-240 | 5/9 Secondary reference U.S. Government activity |
| M83485/1-240 | 5/9 Secondary reference U.S. Government activity |
| 5331PL2173866 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5331-01-419-8407 is a O-Ring, manufactured by Naval Sea Systems Command, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-419-8407 has 5 manufacturer part numbers on file: 211040981 (Naval Sea Systems Command), M83485/1-240 (Leonardo Spa Helicopters Division - Production Site), M83485/1-240 (Sae International Dba Sae International), 77358 (Hampton Hydraulics, Llc), 175789 REV B ITEM 16 (Hampton Hydraulics, Llc).
1 possible match (shared part number, not a government interchangeability claim): 1560-01-670-5435. Verify interchangeability with system specifications before substitution.
Key specifications for 211040981: Cross-Sectional Height: 3.706 INCHES MINIMUM AND 3.762 INCHES MAXIMUM IN; Center Hole Diameter: 3.706 INCHES MINIMUM AND 3.762 INCHES MAXIMUM IN; Material: RUBBER FLUOROCARBON CLASS FPM. 3 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.