The Hose,air Duct, cataloged under National Stock Number 4720-01-243-6335, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Huntington Ingalls Inc Div Newport News Shipbuilding. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 4720-01-243-6335 |
| Primary Part Number | 3140558 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Huntington Ingalls Inc Div Newport News Shipbuilding |
| Status | ACTIVE |
| Inside Width | 4.500 INCHES NOMINAL FIRST END IN |
| Inside Length | 7.000 INCHES NOMINAL FIRST END IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Features Provided | OZONE RESISTANT |
| Material | RUBBER CHLOROPRENE CLASS CR 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 |
|---|---|
| 3140558 PRIMARY | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 501-5589765 ITEM 35 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 501-5589765 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4720-01-243-6335 is a Hose,air Duct, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-243-6335 has 2 manufacturer part numbers on file: 3140558 (Huntington Ingalls Inc Div Newport News Shipbuilding), 501-5589765 ITEM 35 (Naval Sea Systems Command).
4 possible matches (shared part number, not a government interchangeability claim): 4720-01-244-0097, 4720-01-244-0098, 4720-01-244-2510. Verify interchangeability with system specifications before substitution.
Key specifications for 3140558: Inside Width: 4.500 INCHES NOMINAL FIRST END IN; Inside Length: 7.000 INCHES NOMINAL FIRST END IN; Cross-Sectional Shape Style: RECTANGULAR; Features Provided: OZONE RESISTANT. 5 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.