The Tube Assembly,metal, cataloged under National Stock Number 4710-00-751-9345, 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 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 10 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4710-00-751-9345 |
| Primary Part Number | 646830 |
| Item Name | Tube Assembly,metal |
| FSC / FSG | 4710 / 47 — Pipe, Tube and Rigid Tubing |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Design Form | PREBENT |
| Mating End Quantity | 2 SINGLE END |
| Material Document and Classification | AMS 5576 ASSN STD SINGLE MATERIAL RESPONSE TUBING |
| Material Document and Classification | AMS 5645 ASSN STD SINGLE MATERIAL RESPONSE SINGLE END |
| Wall Thickness | 0.020 INCHES NOMINAL IN |
| End Connection Style | UNTHREADED EXTERNAL SINGLE END |
| Tube Outside Diameter | 1.500 INCHES NOMINAL IN |
| Material | STEEL COMP 321 SINGLE END |
| Material | STEEL COMP 321 TUBING |
| Connection Special Design | BULKHEAD SINGLE END |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 646830 | E.a. Patten Co Llc (USA) |
| 646830 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 646830 | Smiths Tubular Systems-Laconia, Inc. Div Lewis & Saunders (USA) |
| Reference | Meaning |
|---|---|
| 46830 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
| 427629 | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| 646830 | 5/9 Secondary reference Aerometals, Inc. |
| 646830 | 5/9 Secondary reference Aero Tube Technologies, Llc Dba Tube Bends |
NSN 4710-00-751-9345 is a Tube Assembly,metal, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 4710, Pipe, Tube and Rigid Tubing. Status: active.
NSN 4710-00-751-9345 has 3 manufacturer part numbers on file: 646830 (E.a. Patten Co Llc), 646830 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 646830 (Smiths Tubular Systems-Laconia, Inc. Div Lewis & Saunders).
Key specifications for 646830: Design Form: PREBENT; Mating End Quantity: 2 SINGLE END; Material Document and Classification: AMS 5576 ASSN STD SINGLE MATERIAL RESPONSE TUBING; Material Document and Classification: AMS 5645 ASSN STD SINGLE MATERIAL RESPONSE SINGLE END. 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.
NSN 4710-00-751-9345 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.