The Hose Assembly,nonmetallic, cataloged under National Stock Number 4720-01-540-1341, 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 Sea Systems Command. Government technical data includes 21 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-540-1341 |
| Primary Part Number | 651-7385129 PART F204 |
| Item Name | Hose Assembly,nonmetallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Measuring Method and Length | 24.600 INCHES NOMINAL WORKING IN |
| Nominal Pipe Size Accommodated | 0.250 INCHES FIRST END IN |
| Temp Rating | -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Minimum Inside Bending Radius | 4.625 INCHES IN |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) FIRST END |
| End Connection Design | STRAIGHT FIRST END |
| Criticality Code Justification | FEAT |
| Layer Composition and Location | OUTER LAYER MOLDED RUBBER, SYNTHETIC AND 1ST LAYER BRAIDED POLYESTER CORD AND 2ND LAYER BRAIDED POLYESTER CORD |
| Connection Type | THREADED EXTERNAL BOSS FIRST END |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 0.768 INCHES NOMINAL IN |
| Operating Pressure | 625.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 1.188 INCHES FIRST END IN |
| Inside Diameter | 0.421 INCHES NOMINAL IN |
| Inside Surface Condition | SMOOTH |
| Media for Which Designed | WATER AND OIL, LUBRICATING, DIESTER BASE AND GAS SINGLE RESPONSE |
| Thread Class | 3A FIRST END A |
| Burst Test Pressure | 2500.0 POUNDS PER SQUARE INCH LBS |
| Thread Quantity Per Inch | 12 FIRST END |
| 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 | Y |
| Part Number | Manufacturer |
|---|---|
| 651-7385129 PART F204 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 500-7549665 ITEM G2021 | 5/1 Secondary reference Naval Sea Systems Command |
| G917-3350 ITEM G2021 | 5/1 Secondary reference U.S. Government activity |
| G651-3921 PART F204 | 5/2 Secondary reference U.S. Government activity |
| 801-6640963 ASSY 257 | 5/1 Secondary reference Naval Sea Systems Command |
NSN 4720-01-540-1341 is a Hose Assembly,nonmetallic, manufactured by Naval Sea Systems Command, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-540-1341 has 1 manufacturer part number on file: 651-7385129 PART F204 (Naval Sea Systems Command).
4 possible matches (shared part number, not a government interchangeability claim): 4720-01-540-1358, 4720-01-540-1387, 4720-01-540-2335. Verify interchangeability with system specifications before substitution.
Key specifications for 651-7385129 PART F204: Measuring Method and Length: 24.600 INCHES NOMINAL WORKING IN; Nominal Pipe Size Accommodated: 0.250 INCHES FIRST END IN; Temp Rating: -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF; Minimum Inside Bending Radius: 4.625 INCHES IN. 21 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.