The Tee,tube, cataloged under National Stock Number 4730-01-449-3121, 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 Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems. Government technical data includes 16 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-449-3121 |
| Primary Part Number | 07A347-16-12-14 |
| Item Name | Tee,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems |
| Status | ACTIVE |
| Connection Style | PLAIN (TUBE) ALL ENDS |
| Tubing Wall Nominal Thickness for Which Designed | 0.115 INCHES SECOND END IN |
| Tubing Wall Nominal Thickness for Which Designed | 0.155 INCHES FIRST END IN |
| Tubing Wall Nominal Thickness for Which Designed | 0.135 INCHES THIRD END IN |
| Connection Type | UNTHREADED INTERNAL TUBE ALL ENDS |
| Material Document and Classification | AMS4965 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 0.750 INCHES SECOND END IN |
| Nominal Outside Diameter Tube Accommodated | 0.875 INCHES THIRD END IN |
| Nominal Outside Diameter Tube Accommodated | 1.000 INCHES FIRST END IN |
| Operating Pressure | 4000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Leg Length | 2.186 INCHES NOMINAL FIRST END IN |
| Leg Length | 1.947 INCHES NOMINAL SECOND END IN |
| Leg Length | 2.066 INCHES NOMINAL THIRD END IN |
| Maximum Operating Temp | 275.0 FAHRENHEIT SECOND RESPONSE DEGF |
| Maximum Operating Temp | -65.0 FAHRENHEIT FIRST RESPONSE DEGF |
| Material | TITANIUM ALLOY UNS R54520 OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 07A347-16-12-14 | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems (USA) |
| Reference | Meaning |
|---|---|
| 4PHS311-161214 | 3/9 Design control — primary reference Advanced Metal Components Inc |
| 07A347 | D/9 Drawing number reference only Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems |
| 4PHS311 | D/9 Drawing number reference only Advanced Metal Components Inc |
NSN 4730-01-449-3121 is a Tee,tube, manufactured by Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-449-3121 has 1 manufacturer part number on file: 07A347-16-12-14 (Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-449-3126. Verify interchangeability with system specifications before substitution.
Key specifications for 07A347-16-12-14: Connection Style: PLAIN (TUBE) ALL ENDS; Tubing Wall Nominal Thickness for Which Designed: 0.115 INCHES SECOND END IN; Tubing Wall Nominal Thickness for Which Designed: 0.155 INCHES FIRST END IN; Tubing Wall Nominal Thickness for Which Designed: 0.135 INCHES THIRD END IN. 16 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 4730-01-449-3121 has DEMIL Code B. 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.