The Hose Assembly,nonmetallic, cataloged under National Stock Number 4720-01-326-0820, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 24 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-326-0820 |
| Item Name | Hose Assembly,nonmetallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Status | ACTIVE |
| Flow Angle | 90.0 DEGREES FIRST END |
| Measuring Method and Length | 55.000 INCHES NOMINAL WORKING IN |
| Temp Rating | -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Minimum Inside Bending Radius | 25.000 INCHES IN |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) FIRST END |
| End Connection Design | ELBOW FIRST END |
| Layer Composition and Location | 1ST LAYER BRAIDED SYNTHETIC CORD AND 2ND LAYER BRAIDED SYNTHETIC CORD AND 3RD LAYER BRAIDED SYNTHETIC CORD AND OUTER LAYER MOLDED RUBBER, SYNTHETIC |
| Angle Between Rigid Elbow Fittings in Deg | 0.0 |
| Connection Type | THREADED EXTERNAL BOSS FIRST END |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 2.702 INCHES MINIMUM AND 2.828 INCHES MAXIMUM IN |
| Operating Pressure | 900.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS |
| End Fitting Component and Material | COMPLETE FITTING NICKEL ALLOY ALL ENDS |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 3.750 INCHES FIRST END IN |
| Specification/standard Data | MIL-H-24136/2-32 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION |
| Inside Diameter | 1.961 INCHES MINIMUM AND 2.039 INCHES MAXIMUM IN |
| Inside Surface Condition | SMOOTH |
| Media for Which Designed | WATER, FRESH AND WATER, SALT AND AIR AND FUEL/OIL, HYDROCARBON SINGLE RESPONSE |
| Thread Class | 2A FIRST END A |
| Burst Test Pressure | 3600.0 POUNDS PER SQUARE INCH LBS |
| Thread Quantity Per Inch | 12 FIRST END |
| Outer Covering Environmental Protection | ABRASION RESISTANT AND OXIDATION RESISTANT AND LIGHT RESISTANT AND WEATHERPROOF |
| Thread Series Designator | UN FIRST END |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 2621-255-04 ASSY.66 | 3/9 Design control — primary reference Brown Boveri Electric Inc |
| 508 4685844 | D/9 Drawing number reference only U.S. Government activity |
| 8454788683 ASSY 66 | 5/2 Secondary reference U.S. Government activity |
| 2621-225-04 ASSY 66 | 5/9 Secondary reference U.S. Government activity |
| 508-4685844 ITEM F14 | 5/2 Secondary reference U.S. Government activity |
NSN 4720-01-326-0820 is a Hose Assembly,nonmetallic, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
Key specifications for 4720-01-326-0820: Flow Angle: 90.0 DEGREES FIRST END; Measuring Method and Length: 55.000 INCHES NOMINAL WORKING IN; Temp Rating: -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF; Minimum Inside Bending Radius: 25.000 INCHES IN. 24 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.