The Hose,air Duct, cataloged under National Stock Number 4720-01-176-4209, 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 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-176-4209 |
| Primary Part Number | GH510BL6-0240 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Measuring Method and Length | 24.000 INCHES NOMINAL OVERALL IN |
| Temp Rating | -20.0 FAHRENHEIT AND 150.0 FAHRENHEIT DEGF |
| Minimum Inside Bending Radius | 1.500 INCHES IN |
| Connection Type | PLAIN FIRST END |
| Style Designator | HELICALLY WOUND CONTINOUS WIRE SUPPORTED |
| Cross-Sectional Shape Style | ROUND |
| Operating Pressure | 7.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Inside Diameter | 1.500 INCHES NOMINAL FIRST END IN |
| Material | PLASTIC POLYVINYL SECOND PLY |
| Material | STEEL AND PLASTIC POLYVINYL FIRST 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 |
|---|---|
| GH510BL6-0240 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| CMD-1 1/2 I.D. GRAY PRIMARY | Flexible Technologies Inc (USA) |
| Reference | Meaning |
|---|---|
| CMD-1 1/2 INSIDE | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| GH510BL | 7/1 Vendor item drawing reference Northrop Grumman Systems Corporation |
| CMD-1 1/2 ID GRA | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4720-01-176-4209 is a Hose,air Duct, manufactured by Northrop Grumman Systems Corporation, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-176-4209 has 2 manufacturer part numbers on file: GH510BL6-0240 (Northrop Grumman Systems Corporation), CMD-1 1/2 I.D. GRAY (Flexible Technologies Inc).
3 possible matches (shared part number, not a government interchangeability claim): 4720-01-182-6838, 4720-01-293-4423, 4720-01-293-4424. Verify interchangeability with system specifications before substitution.
Key specifications for GH510BL6-0240: Measuring Method and Length: 24.000 INCHES NOMINAL OVERALL IN; Temp Rating: -20.0 FAHRENHEIT AND 150.0 FAHRENHEIT DEGF; Minimum Inside Bending Radius: 1.500 INCHES IN; Connection Type: PLAIN FIRST END. 10 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.