The Elbow,tube, cataloged under National Stock Number 4730-01-339-6721, 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 Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply. Government technical data includes 22 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-339-6721 |
| Primary Part Number | AA1750D1616 |
| Item Name | Elbow,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply |
| Status | ACTIVE |
| Flow Angle | 90.0 DEGREES |
| Surface Treatment Document and Classification | MIL-A-8625,TYII,CL2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Connection Style | FLARED (TUBE) SECOND END |
| Connection Style | SWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END |
| Connection Type | THREADED EXTERNAL TUBE SECOND END |
| Connection Type | THREADED INTERNAL TUBE FIRST END |
| Material Document and Classification | QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE NUT |
| Material Document and Classification | QQ-A-367 FED SPEC SINGLE MATERIAL RESPONSE ELBOW |
| Nominal Outside Diameter Tube Accommodated | 1.000 INCHES ALL ENDS IN |
| Leg Length | 1.387 INCHES NOMINAL FIRST END IN |
| Leg Length | 1.804 INCHES NOMINAL SECOND END IN |
| Nominal Thread Size | 1.312 INCHES FIRST END IN |
| Nominal Thread Size | 1.313 INCHES SECOND END IN |
| Seat Angle | 37.0 DEGREES SECOND END |
| Seat Angle | 38.0 DEGREES FIRST END |
| Surface Treatment | ANODIZE OVERALL |
| Thread Class | 3A SECOND END A |
| Thread Class | 3B FIRST END |
| Thread Quantity Per Inch | 12 ALL ENDS |
| Material | ALUMINUM ALLOY 2024 NUT |
| Material | ALUMINUM ALLOY 2014 ELBOW |
| 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 |
|---|---|
| LE273-0069-0066 | The Boeing Company Div Legacy Am&m (USA) |
| 07A105D16-16 | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems (USA) |
| AA1750D1616 PRIMARY | Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply (USA) |
| 07A105D16-16 | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems (USA) |
| AP262D1616 PRIMARY | Sps Technologies, Llc Dba Airdrome Precision Components (USA) |
| AFP661D16-16 PRIMARY | Aerofit, Llc (USA) |
| Reference | Meaning |
|---|---|
| 07A105 | D/9 Drawing number reference only Aerofit, Llc |
NSN 4730-01-339-6721 is a Elbow,tube, manufactured by Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-339-6721 has 6 manufacturer part numbers on file: LE273-0069-0066 (The Boeing Company Div Legacy Am&m), 07A105D16-16 (Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems), AA1750D1616 (Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply), 07A105D16-16 (Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems), AP262D1616 (Sps Technologies, Llc Dba Airdrome Precision Components) and 1 more.
Key specifications for AA1750D1616: Flow Angle: 90.0 DEGREES; Surface Treatment Document and Classification: MIL-A-8625,TYII,CL2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Connection Style: FLARED (TUBE) SECOND END; Connection Style: SWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST 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.