The Tee,tube to Boss, cataloged under National Stock Number 4730-00-879-6370, 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 Royson Engineering Company. Government technical data includes 22 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-879-6370 |
| Primary Part Number | 583587 |
| Item Name | Tee,tube to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Royson Engineering Company |
| Status | ACTIVE |
| Connection Style | FLARED (TUBE) FIRST END |
| Connection Style | FLARED (TUBE) THIRD END |
| Connection Style | DOUBLE THREADED SECTION W/ GASKET AND LOCKNUT SEALING (BOSS) SECOND END |
| Connection Type | UNTHREADED EXTERNAL TUBE FIRST END |
| Connection Type | UNTHREADED EXTERNAL TUBE THIRD END |
| Connection Type | THREADED EXTERNAL BOSS SECOND END BULKHEAD |
| Material Document and Classification | 66,AISI 347/SAE 30347 FED STD 1ST MATERIAL RESPONSE OR AMS 5646 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES FIRST END IN |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES THIRD END IN |
| Leg Length | 0.826 INCHES NOMINAL FIRST END IN |
| Leg Length | 0.826 INCHES NOMINAL THIRD END IN |
| Leg Length | 1.040 INCHES NOMINAL SECOND END BULKHEAD IN |
| Nominal Thread Size | 0.438 INCHES ALL ENDS IN |
| Nominal Thread Size | 0.438 INCHES SECOND END BULKHEAD IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Seat Angle | 37.0 DEGREES THIRD END |
| Media for Which Designed | HYDRAULIC FLUID SINGLE RESPONSE |
| Thread Class | 3A SECOND END BULKHEAD A |
| Thread Class | 3A ALL ENDS A |
| Material | STEEL COMP 347 OR STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNF ALL ENDS |
| Thread Series Designator | UNF SECOND END BULKHEAD |
| 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 |
|---|---|
| 583587 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 583587 PRIMARY | Royson Engineering Company (USA) |
| Reference | Meaning |
|---|---|
| 583587 | 5/9 Secondary reference Geodesics Inc |
| 583587 | 5/9 Secondary reference Kwik File Storage Systems Llc |
| 583587 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
| 583587 | 5/9 Secondary reference General Electric Co Apparatus Sales Division of Apparatus Group |
NSN 4730-00-879-6370 is a Tee,tube to Boss, manufactured by Royson Engineering Company, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-879-6370 has 2 manufacturer part numbers on file: 583587 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 583587 (Royson Engineering Company).
Key specifications for 583587: Connection Style: FLARED (TUBE) FIRST END; Connection Style: FLARED (TUBE) THIRD END; Connection Style: DOUBLE THREADED SECTION W/ GASKET AND LOCKNUT SEALING (BOSS) SECOND END; Connection Type: UNTHREADED EXTERNAL TUBE FIRST END. 22 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.