The O-Ring, cataloged under National Stock Number 5331-01-599-0388, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Quantum Marine Engineering, Inc.. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5331-01-599-0388 |
| Primary Part Number | 401-70-150050 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Quantum Marine Engineering, Inc. |
| Status | ACTIVE |
| Cross-Sectional Height | 5.0 MILLIMETERS NOMINAL MM |
| Center Hole Diameter | 150.0 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| 401-70-150050 PRIMARY | Quantum Marine Engineering, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 610-15-020S02-00-00 | D/9 Drawing number reference only Quantum Marine Engineering, Inc. |
NSN 5331-01-599-0388 is a O-Ring, manufactured by Quantum Marine Engineering, Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-599-0388 has 1 manufacturer part number on file: 401-70-150050 (Quantum Marine Engineering, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5331-01-599-0389. Verify interchangeability with system specifications before substitution.
Key specifications for 401-70-150050: Cross-Sectional Height: 5.0 MILLIMETERS NOMINAL MM; Center Hole Diameter: 150.0 MILLIMETERS NOMINAL MM; End Item Identification: STABILIZER SYSTEM, RIDE CONTROL;SENTINEL CLASS FRC-B; 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.