The Coupling,tube, cataloged under National Stock Number 4730-01-376-0977, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-376-0977 |
| Primary Part Number | U30025C |
| Item Name | Coupling,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Connection Style | GROOVED (TUBE) ALL ENDS |
| Nominal Overall Length | 3.250 INCHES IN |
| Connection Type | UNTHREADED EXTERNAL TUBE ALL ENDS |
| Connection Type | THREADED EXTERNAL TUBE CENTER BULKHEAD |
| Style Designator | GROOVED BOTH ENDS |
| Nominal Outside Diameter Tube Accommodated | 2.500 INCHES ALL ENDS IN |
| Nominal Thread Size | 2.875 INCHES CENTER BULKHEAD IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 2A CENTER BULKHEAD A |
| Thread Quantity Per Inch | 16 CENTER BULKHEAD |
| Material | STEEL COMP 304 OR STEEL COMP 304L OVERALL |
| Thread Series Designator | UN CENTER BULKHEAD |
| 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 |
|---|---|
| U30025C | Echelon Supply and Service, Inc. (USA) |
| U30025C | Aar Supply Chain, Inc Dba Aar Defense Systems & Logistics (USA) |
| U30025C PRIMARY | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA) |
| Reference | Meaning |
|---|---|
| U30025C | 3/9 Design control — primary reference Eaton Aviation Corporation |
NSN 4730-01-376-0977 is a Coupling,tube, manufactured by Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-376-0977 has 3 manufacturer part numbers on file: U30025C (Echelon Supply and Service, Inc.), U30025C (Aar Supply Chain, Inc Dba Aar Defense Systems & Logistics), U30025C (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution).
Key specifications for U30025C: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Connection Style: GROOVED (TUBE) ALL ENDS; Nominal Overall Length: 3.250 INCHES IN; Connection Type: UNTHREADED EXTERNAL TUBE ALL ENDS. 13 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.