The Hose Assembly,air Duct, cataloged under National Stock Number 4720-00-549-4864, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Mid-State Sales, Inc. Div Defense Products Group. Government technical data includes 12 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4720-00-549-4864 |
| Primary Part Number | MSS806706 |
| Item Name | Hose Assembly,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Mid-State Sales, Inc. Div Defense Products Group |
| Status | ACTIVE |
| Measuring Method and Length | 70.000 INCHES NOMINAL OVERALL IN |
| Connection Type | COUPLING BOTH ENDS |
| Style Designator | FULLY CONVOLUTED |
| Coupling Style | THREADED EXTERNAL BOTH ENDS |
| Cross-Sectional Shape Style | ROUND |
| Wall Thickness | 0.156 INCHES NOMINAL IN |
| Nominal Thread Size | 1.000 INCHES BOTH ENDS IN |
| Inside Diameter | 1.000 INCHES NOMINAL FIRST END IN |
| Surface Treatment | ENAMEL BOTH END COUPLINGS |
| Material | PLASTIC SINGLE PLY |
| Material | STEEL BOTH END COUPLINGS |
| Thread Series Designator | NPT BOTH ENDS |
| 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 |
|---|---|
| MSS806706 PRIMARY | Mid-State Sales, Inc. Div Defense Products Group (USA) |
| 806706-J PRIMARY | Echelon Supply and Service, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 806706 | 5/9 Secondary reference Tuthill Corporation Dba Tuthill Vac & Blower Systems Div Tuthill Vacuum Systems |
| 806706-A000 | 5/9 Secondary reference Tuthill Corporation Dba Tuthill Vac & Blower Systems Div Tuthill Vacuum Systems |
NSN 4720-00-549-4864 is a Hose Assembly,air Duct, manufactured by Mid-State Sales, Inc. Div Defense Products Group, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-00-549-4864 has 2 manufacturer part numbers on file: MSS806706 (Mid-State Sales, Inc. Div Defense Products Group), 806706-J (Echelon Supply and Service, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 6635-01-392-1548. Verify interchangeability with system specifications before substitution.
Key specifications for MSS806706: Measuring Method and Length: 70.000 INCHES NOMINAL OVERALL IN; Connection Type: COUPLING BOTH ENDS; Style Designator: FULLY CONVOLUTED; Coupling Style: THREADED EXTERNAL BOTH ENDS. 12 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.