The Hose,air Duct, cataloged under National Stock Number 4720-01-535-0448, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Meggitt Oregon Inc Dba Meggitt Oregon Inc Div Meggitt Polymers & Composites. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-535-0448 |
| Primary Part Number | 21A18-04C30-5 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Meggitt Oregon Inc Dba Meggitt Oregon Inc Div Meggitt Polymers & Composites |
| Status | ACTIVE |
| Measuring Method and Length | 20.000 INCHES NOMINAL OVERALL IN |
| Connection Style | ROUND BOTH ENDS |
| Connection Type | SOFT BOTH ENDS |
| Style Designator | HELICALLY WOUND CONTINOUS WIRE SUPPORTED |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 1.250 INCHES MINIMUM AND 1.500 INCHES MAXIMUM BOTH ENDS IN |
| Inside Diameter | 1.000 INCHES NOMINAL BOTH ENDS IN |
| End Overall Length | 1.219 INCHES MINIMUM AND 1.281 INCHES MAXIMUM BOTH ENDS IN |
| End Inside Diameter | 0.969 INCHES MINIMUM AND 1.031 INCHES MAXIMUM BOTH ENDS IN |
| Material | FIBERGLASS AND RUBBER SILICONE CLASS Q 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 |
|---|---|
| LE271-0104-0520 | The Boeing Company Div Legacy Am&m (USA) |
| 21A18-04C30-5 PRIMARY | Meggitt Oregon Inc Dba Meggitt Oregon Inc Div Meggitt Polymers & Composites (USA) |
| Reference | Meaning |
|---|---|
| LE271-0104 | D/9 Drawing number reference only The Boeing Company Div Legacy Am&m |
NSN 4720-01-535-0448 is a Hose,air Duct, manufactured by Meggitt Oregon Inc Dba Meggitt Oregon Inc Div Meggitt Polymers & Composites, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-535-0448 has 2 manufacturer part numbers on file: LE271-0104-0520 (The Boeing Company Div Legacy Am&m), 21A18-04C30-5 (Meggitt Oregon Inc Dba Meggitt Oregon Inc Div Meggitt Polymers & Composites).
Key specifications for 21A18-04C30-5: Measuring Method and Length: 20.000 INCHES NOMINAL OVERALL IN; Connection Style: ROUND BOTH ENDS; Connection Type: SOFT BOTH ENDS; Style Designator: HELICALLY WOUND CONTINOUS WIRE SUPPORTED. 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.