The Tube Assembly,metal, cataloged under National Stock Number 4710-01-012-0590, 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 Div Pratt & Whitney. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4710-01-012-0590 |
| Primary Part Number | 745918 |
| Item Name | Tube Assembly,metal |
| FSC / FSG | 4710 / 47 — Pipe, Tube and Rigid Tubing |
| Manufacturer | Rtx Corporation Div Pratt & Whitney |
| Status | ACTIVE |
| FSC Application Data | ENGINE,TURBOFAN,MODEL TF33-PW-100A A |
| Material | STEEL CORROSION RESISTING TUBING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 745918 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 745918 PRIMARY | Rtx Corporation Div Pratt & Whitney (USA) |
| 745918 | Tomco Machining, Inc. (USA) |
| 745918 | E.a. Patten Co Llc (USA) |
| Reference | Meaning |
|---|---|
| 745918 | 3/9 Design control — primary reference Kreisler Industrial Corporation |
| 745918 | 5/9 Secondary reference Smiths Tubular Systems-Laconia, Inc. Div Lewis & Saunders |
| 745918 | 5/9 Secondary reference Aero Tube Technologies, Llc Dba Tube Bends |
NSN 4710-01-012-0590 is a Tube Assembly,metal, manufactured by Rtx Corporation Div Pratt & Whitney, classified under FSC 4710, Pipe, Tube and Rigid Tubing. Status: active.
NSN 4710-01-012-0590 has 4 manufacturer part numbers on file: 745918 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 745918 (Rtx Corporation Div Pratt & Whitney), 745918 (Tomco Machining, Inc.), 745918 (E.a. Patten Co Llc).
1 possible match (shared part number, not a government interchangeability claim): 5935-01-466-8081. Verify interchangeability with system specifications before substitution.
Key specifications for 745918: FSC Application Data: ENGINE,TURBOFAN,MODEL TF33-PW-100A A; Material: STEEL CORROSION RESISTING TUBING. 2 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.