The Hose,air Duct, cataloged under National Stock Number 4720-01-230-1018, 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 7 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-230-1018 |
| Primary Part Number | KSF-100-4-3 |
| 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 | 2.400 INCHES NOMINAL OVERALL IN |
| Connection Type | PLAIN FIRST END |
| Style Designator | HELICALLY WOUND CONTINOUS WIRE SUPPORTED |
| Cross-Sectional Shape Style | ROUND |
| Wall Thickness | 0.063 INCHES NOMINAL IN |
| Operating Pressure | 35.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Inside Diameter | 0.312 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 |
|---|---|
| KSF-100-4-3 PRIMARY | Kirkhill, Inc. Dba Kirkhill Inc (USA) |
| 14-64256-3 | Northrop Grumman Systems Corporation (USA) |
| KSF-100-4-3 | Triman Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| 14-64256-3 | 5/9 Secondary reference Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector |
| KSF100-4-3-0.312IN.IDX.063X2.4 | 5/9 Secondary reference Kirkhill, Inc. Dba Kirkhill Inc |
| 14-64256-3 | 5/9 Secondary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
NSN 4720-01-230-1018 is a Hose,air Duct, manufactured by Kirkhill, Inc. Dba Kirkhill Inc, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-230-1018 has 3 manufacturer part numbers on file: KSF-100-4-3 (Kirkhill, Inc. Dba Kirkhill Inc), 14-64256-3 (Northrop Grumman Systems Corporation), KSF-100-4-3 (Triman Industries Inc).
Key specifications for KSF-100-4-3: Measuring Method and Length: 2.400 INCHES NOMINAL OVERALL IN; Connection Type: PLAIN FIRST END; Style Designator: HELICALLY WOUND CONTINOUS WIRE SUPPORTED; Cross-Sectional Shape Style: ROUND. 7 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.