The Tube Assembly,metal, cataloged under National Stock Number 4710-00-472-4186, is classified within Federal Supply Class 4710 (Pipe, Tube and Rigid Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4710-00-472-4186 |
| Primary Part Number | 3R28738T28 |
| Item Name | Tube Assembly,metal |
| FSC / FSG | 4710 / 47 — Pipe, Tube and Rigid Tubing |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions |
| Status | ACTIVE |
| Seat Angle in Deg | 45.0 ALL ENDS |
| Design Form | STRAIGHT |
| Mating End Quantity | 2 ALL ENDS |
| Material Document and Classification | MIL-T-6845, TYPE 304 MIL SPEC SINGLE MATERIAL RESPONSE TUBING |
| Wall Thickness | 0.028 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.375 INCHES ALL ENDS IN |
| End Connection Style | INVERTED FLARE ALL ENDS |
| Tube Outside Diameter | 0.188 INCHES NOMINAL IN |
| Thread Class | 3A ALL ENDS A |
| Material | STEEL ALL ENDS |
| Material | STEEL COMP 304 TUBING |
| Thread Series Designator | UNF ALL ENDS |
| 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 |
|---|---|
| 3R28738T28 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| Reference | Meaning |
|---|---|
| 3R28738T28 | 3/9 Design control — primary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 3R28738T28 | 5/9 Secondary reference U.S. Government activity |
NSN 4710-00-472-4186 is a Tube Assembly,metal, manufactured by Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions, classified under FSC 4710, Pipe, Tube and Rigid Tubing. Status: active.
NSN 4710-00-472-4186 has 1 manufacturer part number on file: 3R28738T28 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions).
Key specifications for 3R28738T28: Seat Angle in Deg: 45.0 ALL ENDS; Design Form: STRAIGHT; Mating End Quantity: 2 ALL ENDS; Material Document and Classification: MIL-T-6845, TYPE 304 MIL SPEC SINGLE MATERIAL RESPONSE TUBING. 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.