The Hose Assembly,nonmetallic, cataloged under National Stock Number 4720-01-419-6503, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 20 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4720-01-419-6503 |
| Primary Part Number | 1905AS189-2 |
| Item Name | Hose Assembly,nonmetallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Measuring Method and Length | 19.000 INCHES NOMINAL OVERALL IN |
| Temp Rating | -25.0 FAHRENHEIT AND 126.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Minimum Inside Bending Radius | 3.000 INCHES IN |
| Connection Style | SWIVEL NUT FLARE FIRST END |
| End Connection Design | STRAIGHT FIRST END |
| Layer Composition and Location | 1ST LAYER BRAIDED TEXTILE YARN AND 2ND LAYER BRAIDED STEEL WIRE AND OUTER LAYER BRAIDED TEXTILE YARN |
| Connection Type | THREADED INTERNAL TUBE FIRST END |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 0.539 INCHES NOMINAL IN |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.438 INCHES FIRST END IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Inside Diameter | 0.190 INCHES NOMINAL IN |
| Inside Surface Condition | SMOOTH |
| Media for Which Designed | FUEL/OIL, HYDROCARBON AND HYDRAULIC FLUID, WATER BASE SINGLE RESPONSE |
| Thread Class | 3B FIRST END |
| Burst Test Pressure | 4500.0 POUNDS PER SQUARE INCH LBS |
| Outer Covering Environmental Protection | MILDEW RESISTANT AND OIL RESISTANT |
| Thread Series Designator | UNF 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 |
| Part Number | Manufacturer |
|---|---|
| 1905AS189-2 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| 1905AS189-2 | Ver-Val Enterprises Inc. Dba Vve (USA) |
| Reference | Meaning |
|---|---|
| 1905AS189-2 | C/1 Advisory reference — outside the item-of-supply concept Gates Corporation |
| 1905AS189 | 7/1 Vendor item drawing reference Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| 1905AS18901 | 5/9 Secondary reference Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| 1905AS189-2 | C/1 Advisory reference — outside the item-of-supply concept J & P Khamken Industries Inc |
| 1905AS189-2 | 3/9 Design control — primary reference Spectrum Sciences & Software, Inc. |
NSN 4720-01-419-6503 is a Hose Assembly,nonmetallic, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-419-6503 has 2 manufacturer part numbers on file: 1905AS189-2 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 1905AS189-2 (Ver-Val Enterprises Inc. Dba Vve).
1 possible match (shared part number, not a government interchangeability claim): 4720-01-420-8042. Verify interchangeability with system specifications before substitution.
Key specifications for 1905AS189-2: Measuring Method and Length: 19.000 INCHES NOMINAL OVERALL IN; Temp Rating: -25.0 FAHRENHEIT AND 126.0 FAHRENHEIT SINGLE RESPONSE DEGF; Minimum Inside Bending Radius: 3.000 INCHES IN; Connection Style: SWIVEL NUT FLARE FIRST END. 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.