The Hose,air Duct, cataloged under National Stock Number 4720-01-355-3309, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate. Government technical data includes 15 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-355-3309 |
| Primary Part Number | 12553507 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| Status | ACTIVE |
| Measuring Method and Length | 76.000 INCHES NOMINAL OVERALL IN |
| Inside Width | 2.250 INCHES NOMINAL FIRST END IN |
| Inside Length | 4.250 INCHES NOMINAL FIRST END IN |
| Connection Style | RECTANGULAR BOTH ENDS |
| Connection Type | PREFORMED SECOND END |
| Connection Type | PREFORMED FIRST END |
| Style Designator | SLEEVE SECTION |
| Material Document and Classification | ASTM D1248 MFR REF ALL MATERIAL RESPONSES ALL PLIES |
| Cross-Sectional Shape Style | RECTANGULAR |
| Wall Thickness | 0.125 INCHES NOMINAL IN |
| End Inside Width | 1.750 INCHES NOMINAL BOTH ENDS IN |
| Inside Diameter | 4.250 INCHES NOMINAL FIRST END IN |
| End Overall Length | 7.500 INCHES NOMINAL BOTH ENDS IN |
| End Inside Length | 9.500 INCHES NOMINAL BOTH ENDS IN |
| Material | PLASTIC, POLYETHYLENE (PP) ALL PLIES |
| 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 |
|---|---|
| 12553507 PRIMARY | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA) |
NSN 4720-01-355-3309 is a Hose,air Duct, manufactured by Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-355-3309 has 1 manufacturer part number on file: 12553507 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate).
Key specifications for 12553507: Measuring Method and Length: 76.000 INCHES NOMINAL OVERALL IN; Inside Width: 2.250 INCHES NOMINAL FIRST END IN; Inside Length: 4.250 INCHES NOMINAL FIRST END IN; Connection Style: RECTANGULAR BOTH ENDS. 15 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.