The Hose Assembly,air Breathing, cataloged under National Stock Number 4720-01-524-4359, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Hydraflow. Government technical data includes 20 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4720-01-524-4359 |
| Primary Part Number | 55104E0332A |
| Item Name | Hose Assembly,air Breathing |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Hydraflow |
| Status | ACTIVE |
| Measuring Method and Length | 33.250 INCHES NOMINAL OVERALL IN |
| Temp Rating | -65.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF |
| Minimum Inside Bending Radius | 1.500 INCHES IN |
| Connection Type | COUPLING BOTH ENDS |
| Style Designator | SLEEVE SECTION |
| Coupling Style | THREADED INTERNAL BOTH ENDS |
| Material Document and Classification | ASTM A313,TYPE 302 ASSN STD SINGLE MATERIAL RESPONSE REINFORCING WIRE |
| Material Document and Classification | ASTM A313,TYPE 302 ASSN STD SINGLE MATERIAL RESPONSE THIRD PLY |
| Cross-Sectional Shape Style | ROUND |
| Wall Thickness | 0.310 INCHES NOMINAL IN |
| Operating Pressure | 125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Nominal Thread Size | 0.750 INCHES BOTH ENDS IN |
| Inside Diameter | 0.500 INCHES NOMINAL FIRST END IN |
| Thread Quantity Per Inch | 16 BOTH ENDS |
| Material | STEEL CORROSION RESISTING REINFORCING WIRE |
| Material | PLASTIC POLYAMIDE NYLON COVER |
| Material | PLASTIC POLYAMIDE NYLON FOURTH PLY |
| Material | RUBBER SILICONE CLASS Q LINER |
| Material | STEEL CORROSION RESISTING THIRD PLY |
| Thread Series Designator | UNF 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 |
|---|---|
| 55104E0332A PRIMARY | Hydraflow (USA) |
| Reference | Meaning |
|---|---|
| 7D0311E0332A | 5/2 Secondary reference U.S. Government activity |
NSN 4720-01-524-4359 is a Hose Assembly,air Breathing, manufactured by Hydraflow, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-524-4359 has 1 manufacturer part number on file: 55104E0332A (Hydraflow).
Key specifications for 55104E0332A: Measuring Method and Length: 33.250 INCHES NOMINAL OVERALL IN; Temp Rating: -65.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF; Minimum Inside Bending Radius: 1.500 INCHES IN; Connection Type: COUPLING BOTH ENDS. 20 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.