The Hose,air Duct, cataloged under National Stock Number 4720-01-536-0056, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Gren Industries Inc Dba Service Rubber Group Div Service Rubber Group. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 — Hose and Flexible Tubing (FSG 47) |
| Manufacturers | Oshkosh Defense Llc (CAGE 75Q65); Gren Industries Inc Dba Service Rubber Group Div Service Rubber Group (CAGE 0VXY8); U S Army Tank Automotive Command Amsta-Im-Mm (CAGE 19207) |
| Parameter | Value |
|---|---|
| NSN | 4720-01-536-0056 |
| Primary Part Number | 12420308 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Gren Industries Inc Dba Service Rubber Group Div Service Rubber Group |
| 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 |
|---|---|
| 3326493 | Oshkosh Defense Llc (USA) |
| 12420308 PRIMARY | Gren Industries Inc Dba Service Rubber Group Div Service Rubber Group (USA) |
| 12420308 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 311000 | 5/9 Secondary reference Austin-Westran Llc |
| 311000 | 3/2 Design control — primary reference U.S. Government activity |
| 3326493 | 5/9 Secondary reference Oshkosh Corp |
NSN 4720-01-536-0056 is a Hose,air Duct, manufactured by Gren Industries Inc Dba Service Rubber Group Div Service Rubber Group, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-536-0056 has 3 manufacturer part numbers on file: 3326493 (Oshkosh Defense Llc), 12420308 (Gren Industries Inc Dba Service Rubber Group Div Service Rubber Group), 12420308 (U S Army Tank Automotive Command Amsta-Im-Mm).
1 possible match (shared part number, not a government interchangeability claim): 6135-01-606-8179. Verify interchangeability with system specifications before substitution.
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.