The Coupling,tube, cataloged under National Stock Number 4730-00-203-0118, 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 8 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-00-203-0118 |
| Item Name | Coupling,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Furnished Items and Quantity | 2 PREINSERTED BRAZING RING |
| Connection Style | SOCKET BRAZING RING (TUBE) ALL ENDS |
| Nominal Overall Length | 3.625 INCHES IN |
| Connection Type | UNTHREADED INTERNAL TUBE ALL ENDS |
| Style Designator | BEVELED BOTH ENDS |
| Nominal Outside Diameter Tube Accommodated | 1.900 INCHES ALL ENDS IN |
| Material | COPPER ALLOY OVERALL |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY TUBE SIZES |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 5000S4823-841338REV5PC6-9 | 3/1 Design control — primary reference U.S. Government activity |
NSN 4730-00-203-0118 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): 4730-00-203-0119. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-00-203-0118: Furnished Items and Quantity: 2 PREINSERTED BRAZING RING; Connection Style: SOCKET BRAZING RING (TUBE) ALL ENDS; Nominal Overall Length: 3.625 INCHES IN; Connection Type: UNTHREADED INTERNAL TUBE ALL ENDS. 8 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.