The Coupling,tube, cataloged under National Stock Number 4730-01-190-2820, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-190-2820 |
| Item Name | Coupling,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Connection Style | GASKET SEAL, COMPRESSION (TUBE) FIRST END |
| Nominal Overall Length | 1.280 INCHES IN |
| Criticality Code Justification | ZZZY |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Nominal Outside Diameter Tube Accommodated | 0.375 INCHES FIRST END IN |
| Material | STEEL COMP 316 OVERALL |
| Reference Number Differentiating Characteristics | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL F — Mutilate — Cut |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Reference | Meaning |
|---|---|
| 6000/6F 6622 | 5/1 Secondary reference U.S. Government activity |
| 6F 6622 | 3/1 Design control — primary reference U.S. Government activity |
| 6000 | 5/1 Secondary reference U.S. Government activity |
| 6F-6622(SPCLN) | 5/1 Secondary reference U.S. Government activity |
| 845-2180703 PC 9 | 5/1 Secondary reference U.S. Government activity |
NSN 4730-01-190-2820 is a Coupling,tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4730-01-479-5555. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-190-2820: Connection Style: GASKET SEAL, COMPRESSION (TUBE) FIRST END; Nominal Overall Length: 1.280 INCHES IN; Criticality Code Justification: ZZZY; Connection Type: THREADED EXTERNAL TUBE FIRST END. 7 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.
NSN 4730-01-190-2820 has DEMIL Code F. Demilitarization may be required before disposal or transfer to non-military entities.
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.