The Hose Assembly,air Breathing, cataloged under National Stock Number 4720-01-437-3053, 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 25 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4720-01-437-3053 |
| Primary Part Number | 79201E0126A |
| Item Name | Hose Assembly,air Breathing |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Hydraflow |
| Status | ACTIVE |
| Measuring Method and Length | 12.750 INCHES NOMINAL OVERALL IN |
| Surface Treatment Document and Classification | UNABLE TO DECODE |
| Surface Treatment Document and Classification | MIL-A-8625, TYPE 2, CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE BOTH END COUPLINGS |
| Minimum Inside Bending Radius | 1.000 INCHES IN |
| Connection Type | THREADED BOTH ENDSUNABLE TO DECODE |
| Style Designator | SLEEVE SECTION |
| Coupling Style | UNABLE TO DECODE |
| Coupling Style | THREADED INTERNAL BOTH ENDS |
| Material Document and Classification | UNABLE TO DECODE |
| Material Document and Classification | QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE BOTH END COUPLINGS |
| Cross-Sectional Shape Style | ROUND |
| Wall Thickness | 0.150 INCHES NOMINAL IN |
| Nominal Thread Size | 0.750 INCHES BOTH ENDS IN |
| Nominal Thread Size | UNABLE TO DECODE |
| Inside Diameter | 0.500 INCHES NOMINAL FIRST ENDUNABLE TO DECODE IN |
| Surface Treatment | UNABLE TO DECODE |
| Surface Treatment | ANODIZE BOTH END COUPLINGS |
| Material | UNABLE TO DECODE |
| Material | ALUMINUM ALLOY BOTH END COUPLINGS |
| Material | PLASTIC POLYAMIDE NYLON SECOND PLYUNABLE TO DECODE |
| Material | PLASTIC POLYESTER COVERUNABLE TO DECODE |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE FIRST PLY |
| Material | STEEL CORROSION RESISTING REINFORCING WIREUNABLE TO DECODE |
| Thread Series Designator | UNABLE TO DECODE |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) 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 |
|---|---|
| 79201E0126A PRIMARY | Hydraflow (USA) |
| 114171E0126A PRIMARY | Smiths Tubular Systems-Laconia, Inc. (USA) |
| AE1011709H0126 PRIMARY | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA) |
| Reference | Meaning |
|---|---|
| 7D0288E0126A | 5/2 Secondary reference U.S. Government activity |
| 7D0288 | D/9 Drawing number reference only U.S. Government activity |
NSN 4720-01-437-3053 is a Hose Assembly,air Breathing, manufactured by Hydraflow, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-437-3053 has 3 manufacturer part numbers on file: 79201E0126A (Hydraflow), 114171E0126A (Smiths Tubular Systems-Laconia, Inc.), AE1011709H0126 (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution).
1 possible match (shared part number, not a government interchangeability claim): 4720-01-480-6038. Verify interchangeability with system specifications before substitution.
Key specifications for 79201E0126A: Measuring Method and Length: 12.750 INCHES NOMINAL OVERALL IN; Surface Treatment Document and Classification: UNABLE TO DECODE; Surface Treatment Document and Classification: MIL-A-8625, TYPE 2, CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE BOTH END COUPLINGS; Minimum Inside Bending Radius: 1.000 INCHES IN. 25 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.