The Hose,air Duct, cataloged under National Stock Number 4720-00-077-1948, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4720-00-077-1948 |
| Primary Part Number | 8711055 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Measuring Method and Length | 22.000 INCHES NOMINAL OVERALL IN |
| Connection Type | PLAIN BOTH ENDS |
| Style Designator | FULLY CONVOLUTED W/ WIRE RINGS BETWEEN CONVOLUTIONS |
| Cross-Sectional Shape Style | ROUND |
| Features Provided | OZONE RESISTANT AND FUNGUS RESISTANT TREATMENT |
| Inside Diameter | 3.000 INCHES NOMINAL FIRST END IN |
| Material | RUBBER SILICONE CLASS Q 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 |
|---|---|
| 8711055 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 8711055-22 | 5/9 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
| 8711053 THRU 8711056 | D/9 Drawing number reference only U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 4720-00-077-1948 is a Hose,air Duct, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-00-077-1948 has 1 manufacturer part number on file: 8711055 (U S Army Tank Automotive Command Amsta-Im-Mm).
2 possible matches (shared part number, not a government interchangeability claim): 4720-00-495-6214, 4720-00-809-2429. Verify interchangeability with system specifications before substitution.
Key specifications for 8711055: Measuring Method and Length: 22.000 INCHES NOMINAL OVERALL IN; Connection Type: PLAIN BOTH ENDS; Style Designator: FULLY CONVOLUTED W/ WIRE RINGS BETWEEN CONVOLUTIONS; 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.