The Coupling,tube, cataloged under National Stock Number 4730-00-889-1664, 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 5 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-889-1664 |
| Item Name | Coupling,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Nominal Overall Length | 3.000 INCHES IN |
| Criticality Code Justification | ZZZY |
| Material Document and Classification | QQ-S-763,CL 316 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Material | STEEL COMP 316 OVERALL |
| Reference Number Differentiating Characteristics | CLEANED IN ACCORDANCE WITH MIL-STD-767A A |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL F — Mutilate — Cut |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | C |
| Reference | Meaning |
|---|---|
| 820-4445910PC43 | 3/1 Design control — primary reference U.S. Government activity |
| 566D212PC14 | 5/1 Secondary reference U.S. Government activity |
| 30N6603316SSM0D | 5/2 Secondary reference U.S. Government activity |
NSN 4730-00-889-1664 is a Coupling,tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-026-8737, 4730-01-483-1240. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-00-889-1664: Nominal Overall Length: 3.000 INCHES IN; Criticality Code Justification: ZZZY; Material Document and Classification: QQ-S-763,CL 316 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Material: STEEL COMP 316 OVERALL. 5 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 4730-00-889-1664 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.