The Hose,air Breathing, cataloged under National Stock Number 4720-01-031-0049, 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 4 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 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 | 4720-01-031-0049 |
| Primary Part Number | 28955-1 |
| Item Name | Hose,air Breathing |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Avox Systems Inc Dba Avox Systems Inc |
| Status | ACTIVE |
| Measuring Method and Length | 14.000 INCHES NOMINAL OVERALL IN |
| Connection Style | ROUND FIRST END |
| Connection Type | PREFORMED FIRST END |
| Cross-Sectional Shape Style | ROUNDROUND |
| 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 |
|---|---|
| 28955-1 PRIMARY | Avox Systems Inc Dba Avox Systems Inc (USA) |
NSN 4720-01-031-0049 is a Hose,air Breathing, manufactured by Avox Systems Inc Dba Avox Systems Inc, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-031-0049 has 1 manufacturer part number on file: 28955-1 (Avox Systems Inc Dba Avox Systems Inc).
2 possible matches (shared part number, not a government interchangeability claim): 5950-01-244-9501, 5995-01-306-0599. Verify interchangeability with system specifications before substitution.
Key specifications for 28955-1: Measuring Method and Length: 14.000 INCHES NOMINAL OVERALL IN; Connection Style: ROUND FIRST END; Connection Type: PREFORMED FIRST END; Cross-Sectional Shape Style: ROUNDROUND. 4 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.