The Elbow,tube to Boss, cataloged under National Stock Number 4730-00-231-3950, 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 25 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through both NSN and commercial part number lookups. 21 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-231-3950 |
| Primary Part Number | AS1040-0303 |
| Item Name | Elbow,tube to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Flow Angle | 45.0 DEGREES |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 1,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Surface Treatment Document and Classification | UNABLE TO DECODE |
| Connection Style | FLARED (TUBE) ALL ENDS |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Material Document and Classification | 66,AISI 12L14 OR 1010 FED STD 1ST MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 0.188 INCHES ALL ENDS IN |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Leg Length | 1.375 INCHES NOMINAL FIRST END IN |
| Leg Length | 0.640 INCHES NOMINAL SECOND END IN |
| Nominal Thread Size | 0.375 INCHES ALL ENDS IN |
| Nominal Thread Size | 0.375 INCHES FIRST END BULKHEAD IN |
| Seat Angle | 37.0 DEGREES ALL ENDS |
| Specification/standard Data | 81343-AS4841 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD AND 81343-AS1040 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Maximum Operating Temp | 250.0 FAHRENHEIT FIRST RESPONSE DEGF |
| Maximum Operating Temp | -65.0 FAHRENHEIT SECOND RESPONSE DEGF |
| Surface Treatment | CADMIUM OVERALL |
| Media for Which Designed | AIR SECOND RESPONSE |
| Media for Which Designed | HYDRAULIC FLUID FIRST RESPONSE |
| Thread Class | 3A FIRST END BULKHEAD A |
| Thread Class | 3A ALL ENDS A |
| Material | STEEL COMP 12L14 OR STEEL COMP 1010 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END BULKHEAD |
| Thread Series Designator | UNABLE TO DECODE |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) 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 |
|---|---|
| AS1040-0303 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| AS4841 | 5/9 Secondary reference Sae International Dba Sae International |
| AS1040 | 5/9 Secondary reference U.S. Government activity |
| AS4841 | 5/9 Secondary reference U.S. Government activity |
| AN837-3 | 5/9 Secondary reference Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution |
| AS1040-0303 | 5/9 Secondary reference U.S. Government activity |
| AN837-3 | 5/9 Secondary reference Collins Engineering Corp |
| AN837-3 | 5/9 Secondary reference Hydro-Fitting Manufacturing Corporation |
| AN837-3 | 5/9 Secondary reference Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply |
| AN837-3 | 5/9 Secondary reference U.S. Government activity |
| MS24396-3 | 5/9 Secondary reference Hydro-Fitting Manufacturing Corporation |
| MS24396-3 | 5/9 Secondary reference Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution |
| AN922-3 | 5/9 Secondary reference U.S. Government activity |
| MS24396-3 | 5/9 Secondary reference Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply |
| AS1040 | 5/9 Secondary reference Sae International Dba Sae International |
| SAE-AS4841 | 3/1 Design control — primary reference Sae International Dba Sae International |
| MS24396-3 | 5/9 Secondary reference U.S. Government activity |
| AN837-3 | 5/9 Secondary reference Aerofit, Llc |
| MS24396-3 | 5/9 Secondary reference Nortel |
| MS24396-3 | 5/9 Secondary reference Satair A/s |
| AN837-3 | 5/9 Secondary reference Nortel |
NSN 4730-00-231-3950 is a Elbow,tube to Boss, manufactured by Sae International Dba Sae International, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-231-3950 has 1 manufacturer part number on file: AS1040-0303 (Sae International Dba Sae International).
Key specifications for AS1040-0303: Flow Angle: 45.0 DEGREES; Surface Treatment Document and Classification: QQ-P-416,TYPE 1,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Surface Treatment Document and Classification: UNABLE TO DECODE; Connection Style: FLARED (TUBE) ALL ENDS. 25 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.