The Elbow,tube, cataloged under National Stock Number 4730-01-156-7130, 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 Nelson Aero Space, Inc.. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-156-7130 |
| Primary Part Number | 7M44-4V |
| Item Name | Elbow,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Nelson Aero Space, Inc. |
| Status | ACTIVE |
| Flow Angle | 90.0 DEGREES |
| Connection Style | FLARED (TUBE) ALL ENDS |
| Connection Type | THREADED EXTERNAL TUBE FIRST END BULKHEAD |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES ALL ENDS IN |
| Leg Length | 2.375 INCHES NOMINAL FIRST END IN |
| Leg Length | 0.953 INCHES NOMINAL SECOND END IN |
| Nominal Thread Size | 0.437 INCHES ALL ENDS IN |
| Nominal Thread Size | 0.437 INCHES FIRST END BULKHEAD IN |
| Seat Angle | 37.0 DEGREES ALL ENDS |
| Surface Treatment | CHROMATE OVERALL |
| Thread Class | 3A FIRST END BULKHEAD A |
| Thread Class | 3A ALL ENDS A |
| Material | ALUMINUM ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END BULKHEAD |
| 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 |
|---|---|
| 7M44-4V | Nelson Aero Space, Inc. (USA) |
| 7M44-4V | Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply (USA) |
| 7M44-4V | Cal Fittings Inc (USA) |
| 7M44-4V | Sps Technologies, Llc Dba Airdrome Precision Components (USA) |
| Reference | Meaning |
|---|---|
| 7M44 | D/9 Drawing number reference only The Boeing Company Div Defense |
| 7M44-4V | 5/9 Secondary reference United Supply Co Inc |
| 7M44-4V | 3/9 Design control — primary reference The Boeing Company Div Defense |
| 10108808 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 7M44-4V | 5/9 Secondary reference Crown Fitting Co Inc |
| 7M44-4V | 5/9 Secondary reference Designed Metal Connections Inc Dba Permaswage Usa Div Permaswage, a Pcc Company |
| 7M44-4V | 5/9 Secondary reference Bailey Hose Inc |
NSN 4730-01-156-7130 is a Elbow,tube, manufactured by Nelson Aero Space, Inc., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-156-7130 has 4 manufacturer part numbers on file: 7M44-4V (Nelson Aero Space, Inc.), 7M44-4V (Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply), 7M44-4V (Cal Fittings Inc), 7M44-4V (Sps Technologies, Llc Dba Airdrome Precision Components).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-186-9408. Verify interchangeability with system specifications before substitution.
Key specifications for 7M44-4V: Flow Angle: 90.0 DEGREES; Connection Style: FLARED (TUBE) ALL ENDS; Connection Type: THREADED EXTERNAL TUBE FIRST END BULKHEAD; Connection Type: THREADED EXTERNAL TUBE ALL ENDS. 16 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.