The Hose,air Duct, cataloged under National Stock Number 4720-00-033-1844, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 14 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4720-00-033-1844 |
| Primary Part Number | GD10A12C21 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Measuring Method and Length | 10.375 INCHES NOMINAL OVERALL IN |
| Minimum Inside Bending Radius | 1.500 INCHES IN |
| Connection Style | ROUND BOTH ENDS |
| Connection Type | SOFT BOTH ENDS |
| Style Designator | HELICALLY WOUND CONTINOUS WIRE SUPPORTED |
| Cross-Sectional Shape Style | ROUND |
| Operating Pressure | 16.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Inside Diameter | 3.000 INCHES NOMINAL FIRST END IN |
| End Overall Length | 1.500 INCHES NOMINAL BOTH ENDS IN |
| End Inside Diameter | 3.000 INCHES NOMINAL BOTH ENDS IN |
| Material | FIBERGLASS AND RESIN FIRST PLY |
| Material | FIBERGLASS REINFORCING CORD |
| Material | STEEL CORROSION RESISTING REINFORCING WIRE |
| Material | FIBERGLASS AND RESIN SECOND PLY |
| 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 |
|---|---|
| GD10A12C21 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| SAE-AS8796 | 3/1 Design control — primary reference Sae International Dba Sae International |
| 70-1343 | D/9 Drawing number reference only Department of Defense Project Manager-Mobile Electric Power |
| GD10A12C21 | 3/2 Design control — primary reference U.S. Government activity |
| CEETS-12-41A-6 | 5/9 Secondary reference Hbd Industries, Inc Div Hbd/thermoid Inc |
| MIL-H-8796 | 5/9 Secondary reference U.S. Government activity |
| 70-1343 | 3/2 Design control — primary reference U.S. Government activity |
| FLEXEFLYTE L-1 | 3/1 Design control — primary reference Flexible Technologies Inc |
NSN 4720-00-033-1844 is a Hose,air Duct, manufactured by Northrop Grumman Systems Corporation, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-00-033-1844 has 1 manufacturer part number on file: GD10A12C21 (Northrop Grumman Systems Corporation).
1 possible match (shared part number, not a government interchangeability claim): 5330-00-106-4571. Verify interchangeability with system specifications before substitution.
Key specifications for GD10A12C21: Measuring Method and Length: 10.375 INCHES NOMINAL OVERALL IN; Minimum Inside Bending Radius: 1.500 INCHES IN; Connection Style: ROUND BOTH ENDS; Connection Type: SOFT BOTH ENDS. 14 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.