The O-Ring, cataloged under National Stock Number 5331-01-268-3189, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5331-01-268-3189 |
| Primary Part Number | 803-4384536-31B-29 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc |
| Status | ACTIVE |
| Center Hole Diameter | 0.500 INCHES NOMINAL IN |
| 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 |
|---|---|
| 803-4384536-31B-29 | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA) |
| 803-4384536-31B-29 | Lockheed Martin Corporation Div Rms (USA) |
| Reference | Meaning |
|---|---|
| 803-4384536-31B-29 | 3/2 Design control — primary reference U.S. Government activity |
| 803438453631B29 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5331-01-268-3189 is a O-Ring, manufactured by Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-268-3189 has 2 manufacturer part numbers on file: 803-4384536-31B-29 (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc), 803-4384536-31B-29 (Lockheed Martin Corporation Div Rms).
Key specifications for 803-4384536-31B-29: Center Hole Diameter: 0.500 INCHES NOMINAL IN; End Item Identification: W/S: ARLEIGH BURKE CLASS DDG; NIMITZ CLASS CVN; AN/SRN-25(V) NAVIGATION RADIO SET; CVN 68 CLASS REACTOR FILL AUXILIARY SYSTEM; TICONDEROGA CLASS CG (47). 1 specification is 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.