The Hose Assembly,nonmetallic, cataloged under National Stock Number 4720-01-124-5591, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is U S Dept of Transportation Federal Aviation Administration. Government technical data includes 17 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4720-01-124-5591 |
| Primary Part Number | 4R175FZB16.00 |
| Item Name | Hose Assembly,nonmetallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | U S Dept of Transportation Federal Aviation Administration |
| Status | ACTIVE |
| Measuring Method and Length | 16.000 INCHES NOMINAL OVERALL IN |
| Connection Style | SWIVEL NUT FLARE FIRST END |
| End Connection Design | STRAIGHT FIRST END |
| Layer Composition and Location | 1ST LAYER MOLDED RUBBER, SYNTHETIC AND 2ND LAYER BRAIDED POLYESTER CORD AND 3RD LAYER RUBBER IMPREGNATED BRAIDED FABRIC |
| Connection Type | THREADED INTERNAL TUBE FIRST END |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 0.408 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.438 INCHES FIRST END IN |
| Seat Angle | 45.0 DEGREES FIRST END |
| Exterior Color | BLACK |
| Inside Diameter | 0.250 INCHES NOMINAL IN |
| Inside Surface Condition | SMOOTH |
| Media for Which Designed | FUEL/OIL, HYDROCARBON SINGLE RESPONSE |
| Thread Class | 2B FIRST END |
| Thread Quantity Per Inch | 20 FIRST 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 |
|---|---|
| 4R175FZB16.00 PRIMARY | U S Dept of Transportation Federal Aviation Administration (USA) |
| Reference | Meaning |
|---|---|
| 4R1U5FZB16.00 | 5/9 Secondary reference Anchor Swan Corp Sub of Amerace Corp |
| D23426 | C/1 Advisory reference — outside the item-of-supply concept Warner and Swasey Co Turning Div |
| 4R175FZB16.00 | 5/9 Secondary reference Contitech Usa, Inc. |
NSN 4720-01-124-5591 is a Hose Assembly,nonmetallic, manufactured by U S Dept of Transportation Federal Aviation Administration, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-124-5591 has 1 manufacturer part number on file: 4R175FZB16.00 (U S Dept of Transportation Federal Aviation Administration).
2 possible matches (shared part number, not a government interchangeability claim): 6625-01-512-9413, 6145-01-615-6435. Verify interchangeability with system specifications before substitution.
Key specifications for 4R175FZB16.00: Measuring Method and Length: 16.000 INCHES NOMINAL OVERALL IN; Connection Style: SWIVEL NUT FLARE FIRST END; End Connection Design: STRAIGHT FIRST END; Layer Composition and Location: 1ST LAYER MOLDED RUBBER, SYNTHETIC AND 2ND LAYER BRAIDED POLYESTER CORD AND 3RD LAYER RUBBER IMPREGNATED BRAIDED FABRIC. 17 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.