The Elbow,tube, cataloged under National Stock Number 4730-01-666-4581, 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 Sae International Dba Sae International. Government technical data includes 14 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-666-4581 |
| Primary Part Number | SAE J1453-3 16-16 520221SN |
| Item Name | Elbow,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Flow Angle | 90.0 DEGREES |
| Connection Style | GASKET SEAL (TUBE) SECOND END |
| Connection Style | SWIVEL NUT, GASKET SEAL (TUBE) FIRST END |
| Connection Type | THREADED EXTERNAL TUBE SECOND END |
| Connection Type | THREADED INTERNAL TUBE FIRST END |
| Style Designator | ELBOW |
| Leg Length | 1.640 INCHES NOMINAL SECOND END IN |
| Leg Length | 2.10 INCHES NOMINAL FIRST END IN |
| Nominal Thread Size | 1.438 INCHES ALL ENDS IN |
| Thread Class | 2A SECOND END A |
| Thread Class | 2B FIRST END |
| Thread Quantity Per Inch | 12 ALL ENDS |
| Material | STEEL CORROSION RESISTING 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 |
|---|---|
| SAE J1453-3 16-16 520221SN PRIMARY | Sae International Dba Sae International (USA) |
| J1453-3 16-16 520221 SN | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| 16-16 520221 SN | 3/9 Design control — primary reference U.S. Government activity |
| SAE J1453-3 16-16 520221 SN | 5/9 Secondary reference U.S. Government activity |
| SAE-J1453/3 | 3/1 Design control — primary reference Sae International Dba Sae International |
| J1453-3 16-16 520221 SN | 5/9 Secondary reference U.S. Government activity |
| J1453-3 | 5/1 Secondary reference Sae International Dba Sae International |
| J1453-3 | 5/9 Secondary reference U.S. Government activity |
| 16-16 520221 SN | 5/9 Secondary reference Sae International Dba Sae International |
NSN 4730-01-666-4581 is a Elbow,tube, manufactured by Sae International Dba Sae International, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-666-4581 has 2 manufacturer part numbers on file: SAE J1453-3 16-16 520221SN (Sae International Dba Sae International), J1453-3 16-16 520221 SN (Sae International Dba Sae International).
Key specifications for SAE J1453-3 16-16 520221SN: Flow Angle: 90.0 DEGREES; Connection Style: GASKET SEAL (TUBE) SECOND END; Connection Style: SWIVEL NUT, GASKET SEAL (TUBE) FIRST END; Connection Type: THREADED EXTERNAL TUBE SECOND END. 14 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.