The Tee,tube, cataloged under National Stock Number 4730-01-021-9949, 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 Rolls-Royce Corporation. Government technical data includes 15 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-021-9949 |
| Primary Part Number | 23088381 |
| Item Name | Tee,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Rolls-Royce Corporation |
| Status | ACTIVE |
| Surface Treatment Document and Classification | ASTM-A120 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Connection Style | FLARED (TUBE) ALL ENDS |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Connection Type | THREADED EXTERNAL TUBE SECOND END |
| Connection Type | THREADED EXTERNAL TUBE THIRD END BULKHEAD |
| Nominal Outside Diameter Tube Accommodated | 0.625 INCHES ALL ENDS IN |
| Leg Length | 2.375 INCHES NOMINAL THIRD END IN |
| Leg Length | 1.547 INCHES NOMINAL SECOND END IN |
| Leg Length | 1.547 INCHES NOMINAL FIRST END IN |
| Nominal Thread Size | 0.875 INCHES ALL ENDS IN |
| Seat Angle | 37.0 DEGREES ALL ENDS |
| Surface Treatment | ZINC OVERALL |
| Thread Class | 3A ALL ENDS A |
| Material | STEEL COMP 304 OVERALL |
| Thread Series Designator | UNF 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 |
|---|---|
| 23088381 PRIMARY | Rolls-Royce Corporation (USA) |
| Reference | Meaning |
|---|---|
| 23088381 | 3/9 Design control — primary reference Rolls-Royce Marine North America Inc. |
| 6874749 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
| 6874749 | 5/9 Secondary reference Rolls-Royce Corporation |
NSN 4730-01-021-9949 is a Tee,tube, manufactured by Rolls-Royce Corporation, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-021-9949 has 1 manufacturer part number on file: 23088381 (Rolls-Royce Corporation).
Key specifications for 23088381: Surface Treatment Document and Classification: ASTM-A120 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Connection Style: FLARED (TUBE) ALL ENDS; Connection Type: THREADED EXTERNAL TUBE FIRST END; Connection Type: THREADED EXTERNAL TUBE SECOND END. 15 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.