The Tube Assembly,metal, cataloged under National Stock Number 4710-00-656-4385, 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 Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions. Government technical data includes 12 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4710-00-656-4385 |
| Primary Part Number | 1607N |
| Item Name | Tube Assembly,metal |
| FSC / FSG | 4710 / 47 — Pipe, Tube and Rigid Tubing |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| Status | ACTIVE |
| Design Form | STRAIGHTSTRAIGHT |
| Mating End Quantity | 1 SINGLE END1 SINGLE END |
| Wall Thickness | 0.049 INCHES NOMINAL0.049 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND SINGLE ENDRIGHT-HAND SINGLE END |
| Nominal Thread Size | 2.000 INCHES SINGLE END2.000 INCHES SINGLE END IN |
| End Connection Style | EXTERNAL SEAT OR GASKET SEAL SINGLE ENDEXTERNAL SEAT OR GASKET SEAL SINGLE END |
| Tube Outside Diameter | 1.375 INCHES NOMINAL1.375 INCHES NOMINAL IN |
| Thread Class | 2A SINGLE END2A SINGLE END A |
| Material | NICKEL ALLOY SINGLE ENDNICKEL ALLOY SINGLE END |
| Material | NICKEL ALLOY TUBINGNICKEL ALLOY TUBING |
| Thread Series Designator | UNF SINGLE ENDUNF SINGLE END |
| End Connection Spec/std | QQ-N-281QQ-N-281 |
| 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 |
|---|---|
| 1607N PRIMARY | Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions (USA) |
| Reference | Meaning |
|---|---|
| HL16258PARTN01607N | 5/9 Secondary reference U.S. Government activity |
| 1607N | 3/9 Design control — primary reference Siemens Energy, Inc. Dba Dresser-Rand |
| HL19347PC119 | 5/9 Secondary reference U.S. Government activity |
| 1607N | 5/9 Secondary reference Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions |
| HL16258PC119 | 5/9 Secondary reference U.S. Government activity |
| F3298088PC119 | 5/9 Secondary reference U.S. Government activity |
| 1607N | 5/9 Secondary reference U.S. Government activity |
NSN 4710-00-656-4385 is a Tube Assembly,metal, manufactured by Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions, classified under FSC 4710, Pipe, Tube and Rigid Tubing. Status: active.
NSN 4710-00-656-4385 has 1 manufacturer part number on file: 1607N (Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions).
Key specifications for 1607N: Design Form: STRAIGHTSTRAIGHT; Mating End Quantity: 1 SINGLE END1 SINGLE END; Overall Length: 52.875 INCHES NOMINAL52.875 INCHES NOMINAL IN; Wall Thickness: 0.049 INCHES NOMINAL0.049 INCHES NOMINAL IN. 12 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.