The O-Ring, cataloged under National Stock Number 5331-01-547-7558, 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 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-547-7558 |
| Primary Part Number | 801-6408785 FIND NO 39 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Hardness Rating | 65.0 SHORE DUROMETER A NOMINAL |
| Criticality Code Justification | FEAT |
| Material Document and Classification | MIL-G-22050 GRADE 1 MIL SPEC SINGLE MATERIAL RESPONSE |
| Center Hole Diameter | 2.835 INCHES MINIMUM AND 2.883 INCHES MAXIMUM IN |
| Material | RUBBER ETHYLENE-PROPYLENE CLASS EPM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 801-6408785 FIND NO 39 PRIMARY | Naval Sea Systems Command (USA) |
| 801-6408785 FIND NO 39CP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 211071631 | 5/1 Secondary reference U.S. Government activity |
| 211071631CP | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
NSN 5331-01-547-7558 is a O-Ring, manufactured by Naval Sea Systems Command, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-547-7558 has 2 manufacturer part numbers on file: 801-6408785 FIND NO 39 (Naval Sea Systems Command), 801-6408785 FIND NO 39CP (Naval Inventory Control Point Mechanicsburg).
Key specifications for 801-6408785 FIND NO 39: Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Hardness Rating: 65.0 SHORE DUROMETER A NOMINAL; Criticality Code Justification: FEAT; Material Document and Classification: MIL-G-22050 GRADE 1 MIL SPEC SINGLE MATERIAL RESPONSE. 6 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.