The Tee,tube, cataloged under National Stock Number 4730-01-198-9523, 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 Lockheed Martin Corporation Div Rms. Government technical data includes 13 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-198-9523 |
| Primary Part Number | 0451D0022-1 |
| Item Name | Tee,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Connection Style | PLAIN (TUBE) ALL ENDS |
| Union Joint Location | FIRST END AND SECOND END AND THIRD END |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES ALL ENDS IN |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Leg Length | 0.812 INCHES NOMINAL ALL ENDS IN |
| Nominal Thread Size | 1.190 INCHES ALL ENDS IN |
| Maximum Operating Temp | 122.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Thread Class | 2A ALL ENDS A |
| Thread Quantity Per Inch | 12 ALL ENDS |
| Material | STEEL COMP 316 OVERALL |
| Thread Series Designator | UN ALL ENDS |
| 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 |
|---|---|
| 0451D0022-1 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| MT310-4-CG | Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc (USA) |
| AP4T PRIMARY | Ssp Fittings Corp (USA) |
| Reference | Meaning |
|---|---|
| P45-SS | 5/9 Secondary reference Ssp Fittings Corp |
| H810-4-SS | 5/2 Secondary reference U.S. Government activity |
| 0451D0022-1 | 5/9 Secondary reference Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems |
NSN 4730-01-198-9523 is a Tee,tube, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-198-9523 has 3 manufacturer part numbers on file: 0451D0022-1 (Lockheed Martin Corporation Div Rms), MT310-4-CG (Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc), AP4T (Ssp Fittings Corp).
Key specifications for 0451D0022-1: Connection Style: PLAIN (TUBE) ALL ENDS; Union Joint Location: FIRST END AND SECOND END AND THIRD END; Connection Type: THREADED EXTERNAL TUBE ALL ENDS; Material Document and Classification: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 13 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.