The Tee,pipe to Tube, cataloged under National Stock Number 4730-01-301-2929, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 27 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-301-2929 |
| Item Name | Tee,pipe to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Furnished Items and Quantity | 2 SHORT COUPLING NUT AND 4 COUPLING SLEEVE |
| Connection Style | PLAIN (PIPE) THIRD END |
| Connection Style | FLARELESS (TUBE) SECOND END |
| Connection Style | FLARELESS (TUBE) FIRST END |
| Criticality Code Justification | ZZZY |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Connection Type | THREADED EXTERNAL TUBE SECOND END |
| Connection Type | THREADED INTERNAL PIPE THIRD END |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES FIRST END IN |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES SECOND END IN |
| Operating Pressure | 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Leg Length | 0.875 INCHES NOMINAL ALL ENDS IN |
| Nominal Thread Size | 0.438 INCHES SECOND END IN |
| Nominal Thread Size | 0.438 INCHES FIRST END IN |
| Nominal Thread Size | 0.250 INCHES THIRD END IN |
| Seat Angle | 20.0 DEGREES SECOND END |
| Seat Angle | 20.0 DEGREES FIRST END |
| Maximum Operating Temp | 125.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Media for Which Designed | OXYGEN, LIQUID SINGLE RESPONSE |
| Thread Class | 3A FIRST END A |
| Thread Class | 3A SECOND END A |
| Material | STEEL COMP 316 OVERALL |
| Thread Series Designator | NPT THIRD END |
| Thread Series Designator | UNF FIRST END |
| Thread Series Designator | UNF SECOND END |
| Reference Number Differentiating Characteristics | SPECIAL CLEANING FOR LOX SERVICE IAW 1552AS201 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Reference | Meaning |
|---|---|
| 1551AS289 | D/9 Drawing number reference only Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| 1551AS289-1 | 7/1 Vendor item drawing reference Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| SS-400-3-4TTF | 3/1 Design control — primary reference Swagelok Co |
NSN 4730-01-301-2929 is a Tee,pipe to Tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-313-6898, 4730-01-526-7668. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-301-2929: Furnished Items and Quantity: 2 SHORT COUPLING NUT AND 4 COUPLING SLEEVE; Connection Style: PLAIN (PIPE) THIRD END; Connection Style: FLARELESS (TUBE) SECOND END; Connection Style: FLARELESS (TUBE) FIRST END. 27 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.