The Hose,air Duct, cataloged under National Stock Number 4720-01-643-8161, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Hdt Expeditionary Systems Inc. Government technical data includes 9 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-643-8161 |
| Primary Part Number | 3003345-P1 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Hdt Expeditionary Systems Inc |
| Status | ACTIVE |
| Measuring Method and Length | 6.0 FEET NOMINAL EXCLUDING END FITTINGS FT |
| Outside Length | 72.0 INCHES NOMINAL BOTH ENDS IN |
| Connection Style | ROUND BOTH ENDS |
| Connection Type | SOFT BOTH ENDS |
| Style Designator | HELICALLY WOUND CONTINOUS WIRE SUPPORTED |
| Cross-Sectional Shape Style | ROUND |
| Inside Diameter | 16.0 INCHES NOMINAL BOTH ENDS IN |
| End Inside Diameter | 16.75 INCHES NOMINAL BOTH ENDS IN |
| Material | PLASTIC POLYESTER SINGLE 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 |
|---|---|
| 3003345-P1 PRIMARY | Hdt Expeditionary Systems Inc (USA) |
| 3003345-001 | Hdt Expeditionary Systems Inc (USA) |
NSN 4720-01-643-8161 is a Hose,air Duct, manufactured by Hdt Expeditionary Systems Inc, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-643-8161 has 2 manufacturer part numbers on file: 3003345-P1 (Hdt Expeditionary Systems Inc), 3003345-001 (Hdt Expeditionary Systems Inc).
Key specifications for 3003345-P1: Measuring Method and Length: 6.0 FEET NOMINAL EXCLUDING END FITTINGS FT; Outside Length: 72.0 INCHES NOMINAL BOTH ENDS IN; Connection Style: ROUND BOTH ENDS; Connection Type: SOFT BOTH ENDS. 9 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.