The Hose Assembly,nonmetallic, cataloged under National Stock Number 4720-01-357-3443, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 22 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4720-01-357-3443 |
| Primary Part Number | 75B838308-101 |
| Item Name | Hose Assembly,nonmetallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Flow Angle | 90.0 DEGREES FIRST END |
| Measuring Method and Length | 13.000 INCHES NOMINAL WORKING IN |
| Temp Rating | -55.0 CELSIUS AND 90.0 CELSIUS SINGLE RESPONSE DEGC |
| Connection Style | SWIVEL NUT FLARE FIRST END |
| End Connection Design | STRAIGHT SECOND END |
| End Connection Design | ELBOW FIRST END |
| Layer Composition and Location | OUTER LAYER BRAIDED STEEL WIRE |
| Connection Type | THREADED INTERNAL TUBE FIRST END |
| Cross-Sectional Shape Style | ROUND |
| Operating Pressure | 20.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS |
| End Fitting Component and Material | COMPLETE FITTING STEEL ALL ENDS |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.4375 INCHES FIRST END IN |
| Seat Angle | 45.0 DEGREES FIRST END |
| Inside Diameter | 0.250 INCHES NOMINAL IN |
| Inside Surface Condition | SMOOTH |
| Media for Which Designed | LIQUID, INGESTED SINGLE RESPONSE |
| Thread Class | 3A FIRST END A |
| Burst Test Pressure | 40.0 POUNDS PER SQUARE INCH LBS |
| Thread Quantity Per Inch | 24 FIRST END |
| Outer Covering Environmental Protection | CORROSION RESISTANT |
| Thread Series Designator | UNJS 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 |
|---|---|
| 75B838308-101 | Nsf Controls Limited (GBR) |
| 75B838308-101 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 107448 | 5/9 Secondary reference T I Accles & Pollock Ltd |
| 107448 | 5/9 Secondary reference Bae Systems (operations) Limited |
NSN 4720-01-357-3443 is a Hose Assembly,nonmetallic, manufactured by The Boeing Company Div Defense, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-357-3443 has 2 manufacturer part numbers on file: 75B838308-101 (Nsf Controls Limited), 75B838308-101 (The Boeing Company Div Defense).
1 possible match (shared part number, not a government interchangeability claim): 3020-01-425-3637. Verify interchangeability with system specifications before substitution.
Key specifications for 75B838308-101: Flow Angle: 90.0 DEGREES FIRST END; Measuring Method and Length: 13.000 INCHES NOMINAL WORKING IN; Temp Rating: -55.0 CELSIUS AND 90.0 CELSIUS SINGLE RESPONSE DEGC; Connection Style: SWIVEL NUT FLARE FIRST END. 22 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.