The Hose Assembly,nonmetallic, cataloged under National Stock Number 4720-00-560-6154, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Transdigm Inc. Government technical data includes 24 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4720-00-560-6154 |
| Primary Part Number | 21504-2 |
| Item Name | Hose Assembly,nonmetallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Transdigm Inc |
| Status | ACTIVE |
| Measuring Method and Length | 254.500 INCHES NOMINAL OVERALL IN |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END |
| Connection Style | SWIVEL NUT WITH COMPRESSION SLEEVE FIRST END |
| Seat Nominal Radius | 0.078 INCHES FIRST END IN |
| End Connection Design | STRAIGHT FIRST END |
| End Connection Design | STRAIGHT SECOND END |
| Layer Composition and Location | 1ST LAYER BRAIDED STEEL WIRE AND OUTER LAYER MOLDED RUBBER, SYNTHETIC |
| Connection Type | THREADED EXTERNAL BOSS SECOND END |
| Connection Type | THREADED INTERNAL TUBE FIRST END |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 0.250 INCHES NOMINAL IN |
| Features Provided | REUSABLE END FITTINGS |
| Thread Direction | RIGHT-HAND SECOND END |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.438 INCHES SECOND END IN |
| Nominal Thread Size | 0.375 INCHES FIRST END IN |
| Exterior Color | BLACK |
| Inside Diameter | 0.188 INCHES NOMINAL IN |
| Inside Surface Condition | SMOOTH |
| Media for Which Designed | FUEL/OIL, HYDROCARBON SINGLE RESPONSE |
| Thread Class | 1A SECOND END A |
| Thread Class | 2B FIRST END |
| Thread Series Designator | UNF FIRST END |
| Thread Series Designator | UNF SECOND 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 |
|---|---|
| 21504-2 PRIMARY | Transdigm Inc (USA) |
| Reference | Meaning |
|---|---|
| 21504-2 | 5/9 Secondary reference Permoid Colored Lights Inc |
NSN 4720-00-560-6154 is a Hose Assembly,nonmetallic, manufactured by Transdigm Inc, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-00-560-6154 has 1 manufacturer part number on file: 21504-2 (Transdigm Inc).
2 possible matches (shared part number, not a government interchangeability claim): 2815-01-083-2123, 4820-01-562-6515. Verify interchangeability with system specifications before substitution.
Key specifications for 21504-2: Measuring Method and Length: 254.500 INCHES NOMINAL OVERALL IN; Connection Style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END; Connection Style: SWIVEL NUT WITH COMPRESSION SLEEVE FIRST END; Seat Nominal Radius: 0.078 INCHES FIRST END IN. 24 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.