The Hose,air Duct, cataloged under National Stock Number 4720-00-595-3370, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Kirkhill, Inc. Dba Kirkhill Inc. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-00-595-3370 |
| Primary Part Number | KSF531A1 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Kirkhill, Inc. Dba Kirkhill Inc |
| Status | ACTIVE |
| Measuring Method and Length | 4.000 INCHES NOMINAL OVERALL IN |
| Connection Type | PREFORMED SECOND END |
| Connection Type | PREFORMED FIRST END |
| Style Designator | SLEEVE SECTION |
| Cross-Sectional Shape Style | ROUND |
| Wall Thickness | 0.094 INCHES NOMINAL IN |
| Operating Pressure | 100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Features Provided | OZONE RESISTANT |
| End Overall Length | 1.000 INCHES NOMINAL SECOND END IN |
| End Overall Length | 1.000 INCHES NOMINAL FIRST END IN |
| 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 |
|---|---|
| H1195 | Kirkhill, Inc. Dba Kirkhill Inc (USA) |
| KSF531A1 PRIMARY | Kirkhill, Inc. Dba Kirkhill Inc (USA) |
| Reference | Meaning |
|---|---|
| KSF531 | 5/9 Secondary reference Kirkhill, Inc. Dba Kirkhill Inc |
| 9902795 | 5/9 Secondary reference U.S. Government activity |
| 9902795 | 5/9 Secondary reference General Electric Company |
| VSF662-1 | 5/9 Secondary reference U.S. Government activity |
NSN 4720-00-595-3370 is a Hose,air Duct, manufactured by Kirkhill, Inc. Dba Kirkhill Inc, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-00-595-3370 has 2 manufacturer part numbers on file: H1195 (Kirkhill, Inc. Dba Kirkhill Inc), KSF531A1 (Kirkhill, Inc. Dba Kirkhill Inc).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-565-6344. Verify interchangeability with system specifications before substitution.
Key specifications for KSF531A1: Measuring Method and Length: 4.000 INCHES NOMINAL OVERALL IN; Connection Type: PREFORMED SECOND END; Connection Type: PREFORMED FIRST END; Style Designator: SLEEVE SECTION. 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.