The Hose Assembly,nonmetallic, cataloged under National Stock Number 4720-01-321-6434, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Olympus America Inc. Government technical data includes 26 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4720-01-321-6434 |
| Primary Part Number | 4414781 |
| Item Name | Hose Assembly,nonmetallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Olympus America Inc |
| Status | ACTIVE |
| Measuring Method and Length | 18.000 INCHES NOMINAL OVERALL IN |
| Temp Rating | -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Minimum Inside Bending Radius | 3.000 INCHES IN |
| Connection Style | SWIVEL NUT, INVERTED FLARE FIRST END |
| Connection Style | COMPRESSION SECOND END |
| Seat Nominal Radius | 0.062 INCHES SECOND END IN |
| End Connection Design | STRAIGHT FIRST END |
| End Connection Design | STRAIGHT SECOND END |
| Layer Composition and Location | 1ST LAYER BRAIDED FIBER AND OUTER LAYER MOLDED RUBBER, CHLOROPRENE |
| Connection Type | THREADED EXTERNAL TUBE SECOND END |
| Connection Type | THREADED INTERNAL TUBE FIRST END |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 0.625 INCHES NOMINAL IN |
| Operating Pressure | 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS |
| Thread Direction | RIGHT-HAND SECOND END |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.625 INCHES FIRST END IN |
| Nominal Thread Size | 0.375 INCHES SECOND END IN |
| Seat Angle | 45.0 DEGREES FIRST END |
| Inside Diameter | 0.375 INCHES NOMINAL IN |
| Inside Surface Condition | SMOOTH |
| Hydrostatic Test Pressure | 800.0 POUNDS PER SQUARE INCH LBS |
| Thread Class | 2B FIRST END |
| Burst Test Pressure | 1600.0 POUNDS PER SQUARE INCH LBS |
| Thread Series Designator | NPT SECOND END |
| 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 |
|---|---|
| 4414781 PRIMARY | Olympus America Inc (USA) |
| Reference | Meaning |
|---|---|
| 11459 | 5/9 Secondary reference Olympus Scientific Solutions Technologies Inc. |
| 00906-106406-18 | 5/9 Secondary reference Dana Corp Weatherhead Div |
| 4414781 | 3/9 Design control — primary reference Olympus Scientific Solutions Technologies Inc. |
NSN 4720-01-321-6434 is a Hose Assembly,nonmetallic, manufactured by Olympus America Inc, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-321-6434 has 1 manufacturer part number on file: 4414781 (Olympus America Inc).
1 possible match (shared part number, not a government interchangeability claim): 1240-01-551-5750. Verify interchangeability with system specifications before substitution.
Key specifications for 4414781: Measuring Method and Length: 18.000 INCHES NOMINAL OVERALL IN; Temp Rating: -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF; Minimum Inside Bending Radius: 3.000 INCHES IN; Connection Style: SWIVEL NUT, INVERTED FLARE FIRST END. 26 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.