The Elbow,pipe to Tube, cataloged under National Stock Number 4730-01-291-1361, 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 Air-Way Manufacturing Company. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-291-1361 |
| Primary Part Number | 6503-8-8 |
| Item Name | Elbow,pipe to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Air-Way Manufacturing Company |
| Status | ACTIVE |
| Surface Treatment Document and Classification | ASTM B633 (TYPE II SC2) ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Connection Style | SOCKET (PIPE) SECOND END |
| Connection Style | SWIVEL NUT, GASKET SEAL (TUBE) FIRST END |
| Connection Type | THREADED INTERNAL PIPE SECOND END |
| Connection Type | THREADED INTERNAL TUBE FIRST END |
| Style Designator | ELBOW |
| Nominal Outside Diameter Tube Accommodated | 0.500 INCHES FIRST END IN |
| Operating Pressure | 4000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thread Size | 0.500 INCHES SECOND END IN |
| Nominal Thread Size | 0.750 INCHES FIRST END IN |
| Pipe Wall Thickness Designation for Which Designed | STANDARD SECOND END |
| Surface Treatment | CHROMATE ZINC OVERALL |
| Thread Class | 2B FIRST END |
| Material | STEEL OVERALL |
| Thread Series Designator | NPTF SECOND END |
| Thread Series Designator | UNF FIRST END |
| 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 |
|---|---|
| 6503-8-8 PRIMARY | Air-Way Manufacturing Company (USA) |
| Reference | Meaning |
|---|---|
| 17-3-3570-1 | 7/2 Vendor item drawing reference U.S. Government activity |
| 6503-8-8 | 5/9 Secondary reference M-C Co Inc |
NSN 4730-01-291-1361 is a Elbow,pipe to Tube, manufactured by Air-Way Manufacturing Company, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-291-1361 has 1 manufacturer part number on file: 6503-8-8 (Air-Way Manufacturing Company).
Key specifications for 6503-8-8: Surface Treatment Document and Classification: ASTM B633 (TYPE II SC2) ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Connection Style: SOCKET (PIPE) SECOND END; Connection Style: SWIVEL NUT, GASKET SEAL (TUBE) FIRST END; Connection Type: THREADED INTERNAL PIPE SECOND END. 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.
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.