The Elbow,tube, cataloged under National Stock Number 4730-01-723-0491, 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 22 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-723-0491 |
| Primary Part Number | AS4137T1216 |
| 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 | 45.0 DEGREES |
| Surface Treatment Document and Classification | AMS 2486 PER AS5272 TYPE 1 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 | AMS 4928 AEROSPACE MATERIAL SPEC STD SINGLE MATERIAL RESPONSE OVERALL |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Leg Length | 1.002 INCHES NOMINAL FIRST END IN |
| Leg Length | 1.213 INCHES NOMINAL SECOND END IN |
| Nominal Thread Size | 1.3125 INCHES SECOND END IN |
| Nominal Thread Size | 1.0625 INCHES FIRST END IN |
| Nominal Outside Diameter | 1.000 INCHES SECOND END IN |
| Nominal Outside Diameter | 0.7500 INCHES FIRST END IN |
| Surface Treatment | PHOSPHATE FLUORIDE OVERALL |
| Nominal Width | 1.140 INCHES SECOND END IN |
| Nominal Width | 0.890 INCHES FIRST END IN |
| Media for Which Designed | FLUID SINGLE RESPONSE |
| Thread Quantity Per Inch | 12 SECOND END |
| Thread Quantity Per Inch | 12 FIRST END |
| Material | TITANIUM ALLOY 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 |
|---|---|
| AS4137T1216 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| AS4137 | 5/1 Secondary reference Sae International Dba Sae International |
NSN 4730-01-723-0491 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 4730-01-723-0491 has 1 manufacturer part number on file: AS4137T1216 (Sae International Dba Sae International).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-723-0511. Verify interchangeability with system specifications before substitution.
Key specifications for AS4137T1216: Flow Angle: 45.0 DEGREES; Surface Treatment Document and Classification: AMS 2486 PER AS5272 TYPE 1 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Connection Style: SWIVEL, PLAIN (TUBE) FIRST END; Connection Style: FLARELESS (TUBE) SECOND END. 22 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.