The Elbow,swivel Flange to Tube, cataloged under National Stock Number 4730-01-540-3720, 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 20 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-540-3720 |
| Primary Part Number | SAE J1453-3 16-16 520281SA |
| Item Name | Elbow,swivel Flange to 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 | SWIVEL NUT, GASKET SEAL (TUBE) SECOND END |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS SWIVEL) FIRST END |
| Connection Type | THREADED EXTERNAL BOSS FIRST END |
| Connection Type | THREADED INTERNAL TUBE SECOND END |
| Nominal Outside Diameter Tube Accommodated | 1.000 INCHES SECOND END IN |
| Leg Length | 2.040 INCHES MINIMUM AND 2.160 INCHES MAXIMUM SECOND END IN |
| Leg Length | 2.320 INCHES MINIMUM AND 2.380 INCHES MAXIMUM FIRST END IN |
| Nominal Thread Size | 1.312 INCHES FIRST END IN |
| Nominal Thread Size | 1.438 INCHES SECOND END IN |
| Specification/standard Data | 81343 - J1453 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Nondefinitive Spec/std Data | 28 FIGURE |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 2A SECOND END A |
| Thread Class | 2A FIRST END A |
| Thread Quantity Per Inch | 12 SECOND END |
| Thread Quantity Per Inch | 12 FIRST END |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UN FIRST END |
| Thread Series Designator | UN SECOND 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 |
|---|---|
| 16-16 520281SA | Sae International Dba Sae International (USA) |
| SAE J1453-3 16-16 520281SA PRIMARY | Sae International Dba Sae International (USA) |
| SAE J1415-3 16-16 520281SA PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| SAE J1415-3 16-16 520281SA | 5/9 Secondary reference U.S. Government activity |
| SAEJ1453-3 | 5/9 Secondary reference U.S. Government activity |
| SAEJ1453-1 | 5/9 Secondary reference Sae International Dba Sae International |
| SAE-J1453/3 | 3/1 Design control — primary reference Sae International Dba Sae International |
| J1453-3 16-16 520281SA | 5/9 Secondary reference U.S. Government activity |
| 16-16 520281SA | 5/9 Secondary reference U.S. Government activity |
| SAEJ1453-1 | 5/9 Secondary reference U.S. Government activity |
NSN 4730-01-540-3720 is a Elbow,swivel Flange to Tube, manufactured by Sae International Dba Sae International, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-540-3720 has 3 manufacturer part numbers on file: 16-16 520281SA (Sae International Dba Sae International), SAE J1453-3 16-16 520281SA (Sae International Dba Sae International), SAE J1415-3 16-16 520281SA (Sae International Dba Sae International).
Key specifications for SAE J1453-3 16-16 520281SA: Flow Angle: 90.0 DEGREES; Connection Style: SWIVEL NUT, GASKET SEAL (TUBE) SECOND END; Connection Style: EXTERNAL SEAT FOR GASKET SEAL (BOSS SWIVEL) FIRST END; Connection Type: THREADED EXTERNAL BOSS FIRST END. 20 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.