The Coupling,tube, cataloged under National Stock Number 4730-01-027-8948, 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 10 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-027-8948 |
| Item Name | Coupling,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Connection Style | STREAMLINED W/ ONE BRAZING RING (TUBE) ALL ENDS |
| Tubing Wall Nominal Thickness for Which Designed | 0.125 INCHES ALL ENDS IN |
| Nominal Overall Length | 1.922 INCHES IN |
| Connection Type | UNTHREADED INTERNAL TUBE ALL ENDS |
| Style Designator | PLAIN |
| Material Document and Classification | QQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 1.900 INCHES ALL ENDS IN |
| Operating Pressure | 225.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 150.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Material | COPPER ALLOY OVERALL |
| 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 |
|---|---|
| M1183/3-07-A | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| M1183/3-07-G | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| MIL-F-1183 | 4/1 Identification reference U.S. Government activity |
| 625986-7 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| S-3-36ALT4-1-1/2IN | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-027-8948 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): 4730-01-496-9017. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-027-8948: Connection Style: STREAMLINED W/ ONE BRAZING RING (TUBE) ALL ENDS; Tubing Wall Nominal Thickness for Which Designed: 0.125 INCHES ALL ENDS IN; Nominal Overall Length: 1.922 INCHES IN; Connection Type: UNTHREADED INTERNAL TUBE ALL ENDS. 10 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.