The O-Ring, cataloged under National Stock Number 5331-01-239-5936, 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 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5331-01-239-5936 |
| Primary Part Number | 245-5183274 ITEM 3 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Cross-Sectional Height | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Center Hole Diameter | 34.812 INCHES NOMINAL IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| 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 |
|---|---|
| 245-5183274 ITEM 3 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 44-00-01 ITEM 3 | C/1 Advisory reference — outside the item-of-supply concept Huntington Ingalls Incorporated Div Ingalls Shipbuilding |
| C6-850 29-01-14 ITEM 3 | 3/9 Design control — primary reference Huntington Ingalls Incorporated Div Ingalls Shipbuilding |
| 245-5183274 PIE | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 5331-01-239-5936 is a O-Ring, manufactured by Naval Sea Systems Command, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-239-5936 has 1 manufacturer part number on file: 245-5183274 ITEM 3 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 5331-01-331-1135. Verify interchangeability with system specifications before substitution.
Key specifications for 245-5183274 ITEM 3: Cross-Sectional Height: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN; Center Hole Diameter: 34.812 INCHES NOMINAL IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR. 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.