The Elbow,swivel Flange to Tube, cataloged under National Stock Number 4730-01-727-6331, 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 18 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-727-6331 |
| Primary Part Number | AS4138V1212 |
| 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 |
| Surface Treatment Document and Classification | AMS 2700 TYPE 2 OR 8 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Connection Style | SWIVEL, PLAIN (TUBE) FIRST END |
| Connection Style | FLARELESS (TUBE) SECOND END |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Style Designator | ELBOW |
| Material Document and Classification | AMS5659 AEROSPACE MATERIAL SPEC STD SINGLE MATERIAL RESPONSE OVERALL |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Leg Length | 1.560 INCHES NOMINAL SECOND END IN |
| Leg Length | 1.367 INCHES NOMINAL FIRST END IN |
| Nominal Thread Size | 1.0625 INCHES ALL ENDS IN |
| Nominal Outside Diameter | 0.750 INCHES ALL ENDS IN |
| Surface Treatment | PASSIVATE OVERALL |
| Nominal Width | 0.890 INCHES ALL ENDS IN |
| Media for Which Designed | FLUID SINGLE RESPONSE |
| Thread Quantity Per Inch | 12 FIRST END |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT (UNJ) 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 |
|---|---|
| AS4138V1212 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| AS4138 | 5/1 Secondary reference Sae International Dba Sae International |
NSN 4730-01-727-6331 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 4730-01-727-6331 has 1 manufacturer part number on file: AS4138V1212 (Sae International Dba Sae International).
3 possible matches (shared part number, not a government interchangeability claim): 4730-01-728-0277, 4730-01-728-1083, 4730-01-728-1134. Verify interchangeability with system specifications before substitution.
Key specifications for AS4138V1212: Flow Angle: 90.0 DEGREES; Surface Treatment Document and Classification: AMS 2700 TYPE 2 OR 8 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Connection Style: SWIVEL, PLAIN (TUBE) FIRST END; Connection Style: FLARELESS (TUBE) SECOND END. 18 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.