The Hose,air Duct,air Breathing, cataloged under National Stock Number 4720-00-550-0002, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Avox Systems Inc Dba Avox Systems Inc. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-00-550-0002 |
| Primary Part Number | 232-686-12 |
| Item Name | Hose,air Duct,air Breathing |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Avox Systems Inc Dba Avox Systems Inc |
| Status | ACTIVE |
| FSC Application Data | REGULATOR,OXYGEN TO MASK |
| Measuring Method and Length | 12.000 INCHES NOMINAL OVERALL IN |
| Connection Style | ROUND FIRST END |
| Connection Type | PREFORMED FIRST END |
| Cross-Sectional Shape Style | ROUND |
| Wall Thickness | 0.023 INCHES NOMINAL IN |
| Inside Diameter | 0.750 INCHES NOMINAL FIRST END IN |
| End Overall Length | 1.250 INCHES NOMINAL FIRST END IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 232-686-12 PRIMARY | Avox Systems Inc Dba Avox Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 8148650 | A/1 Packaging identification reference U.S. Government activity |
NSN 4720-00-550-0002 is a Hose,air Duct,air Breathing, manufactured by Avox Systems Inc Dba Avox Systems Inc, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-00-550-0002 has 1 manufacturer part number on file: 232-686-12 (Avox Systems Inc Dba Avox Systems Inc).
Key specifications for 232-686-12: FSC Application Data: REGULATOR,OXYGEN TO MASK; Measuring Method and Length: 12.000 INCHES NOMINAL OVERALL IN; Connection Style: ROUND FIRST END; Connection Type: PREFORMED FIRST END. 8 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.
NSN 4720-00-550-0002 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.