The Hose Assembly,air Breathing, cataloged under National Stock Number 4720-01-294-3194, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Ami Industries, Inc Div Utc Aerospace Systems. Government technical data includes 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-294-3194 |
| Primary Part Number | 831888-403 |
| Item Name | Hose Assembly,air Breathing |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Ami Industries, Inc Div Utc Aerospace Systems |
| Status | ACTIVE |
| Connection Type | THREADED FIRST END |
| Style Designator | FULLY CONVOLUTED |
| 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 |
|---|---|
| 831888-403 | Ami Industries, Inc Div Utc Aerospace Systems (USA) |
| REDAR-A11229-01 | R.e. Darling Co., Inc. (USA) |
| Reference | Meaning |
|---|---|
| REDAR-A11229-1 | 5/9 Secondary reference R.e. Darling Co., Inc. |
| 831888-403 | C/1 Advisory reference — outside the item-of-supply concept Mag Aerospace Industries, Llc Div Safran Cabins |
| 831888-403 | 3/9 Design control — primary reference U.S. Government activity |
NSN 4720-01-294-3194 is a Hose Assembly,air Breathing, manufactured by Ami Industries, Inc Div Utc Aerospace Systems, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-294-3194 has 2 manufacturer part numbers on file: 831888-403 (Ami Industries, Inc Div Utc Aerospace Systems), REDAR-A11229-01 (R.e. Darling Co., Inc.).
Key specifications for 831888-403: Connection Type: THREADED FIRST END; Style Designator: FULLY CONVOLUTED; Cross-Sectional Shape Style: ROUNDROUND; Special Features: USED ON THE EMERGENCY OXYGEN SYSTEM FOR B-1B; CONNECTION TYPE: GROUND JOINT EXTERNALLY THREADED TAILPIECE W/UNION NUT FIRST END. 3 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.