The Hose,air Duct, cataloged under National Stock Number 4720-00-987-9462, 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. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 11 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 — Hose and Flexible Tubing (FSG 47) |
| Manufacturers | Kirkhill, Inc. Dba Kirkhill Inc (CAGE 75345); Royal Engineered Composites, Inc. (CAGE 16357) |
| Parameter | Value |
|---|---|
| NSN | 4720-00-987-9462 |
| Primary Part Number | D4410B11 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Kirkhill, Inc. Dba Kirkhill Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| D4410B11 PRIMARY | Kirkhill, Inc. Dba Kirkhill Inc (USA) |
| SF25-153B11 PRIMARY | Royal Engineered Composites, Inc. (USA) |
| Reference | Meaning |
|---|---|
| AD777B11 | 5/9 Secondary reference Hbd Industries, Inc Div Hbd/thermoid Inc |
| LS1611A11 | 5/9 Secondary reference U.S. Government activity |
| STSPH200 | D/9 Drawing number reference only U.S. Government activity |
| FT-2120 | D/9 Drawing number reference only Flexible Technologies Inc |
| D4410A11 | 5/9 Secondary reference Kirkhill, Inc. Dba Kirkhill Inc |
| AD777 | D/9 Drawing number reference only Hbd Industries, Inc Div Hbd/thermoid Inc |
| STSPH200B11 | 5/2 Secondary reference U.S. Government activity |
| FT2120B11 | 5/9 Secondary reference Flexible Technologies Inc |
| LS35031A11 | 5/9 Secondary reference U.S. Government activity |
| BE923B11 | 5/9 Secondary reference Bemco, Inc |
| BE923 | D/9 Drawing number reference only Bemco, Inc |
NSN 4720-00-987-9462 is a Hose,air Duct, manufactured by Kirkhill, Inc. Dba Kirkhill Inc, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-00-987-9462 has 2 manufacturer part numbers on file: D4410B11 (Kirkhill, Inc. Dba Kirkhill Inc), SF25-153B11 (Royal Engineered Composites, Inc.).
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.