The Hose,air Duct, cataloged under National Stock Number 4720-00-541-1542, is classified within Federal Supply Class 4720 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Hiller Aircraft Corporation. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-00-541-1542 |
| Primary Part Number | 8B783057-75 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — No Item Name Available |
| Manufacturer | Hiller Aircraft Corporation |
| Status | ACTIVE |
| Material | FIBERGLASS AND RUBBER SILICONE CLASS Q THIRD PLY |
| End Overall Length | 1.500 INCHES NOMINAL BOTH ENDS IN |
| Connection Type | SOFT BOTH ENDS |
| Minimum Inside Bending Radius | 0.820 INCHES IN |
| Material | STEEL CORROSION RESISTING SECOND PLY |
| Measuring Method and Length | 8.250 INCHES NOMINAL OVERALL IN |
| Style Designator | HELICALLY WOUND CONTINOUS WIRE SUPPORTED |
| Material | FIBERGLASS AND RUBBER SILICONE CLASS Q REINFORCING CORD |
| Operating Pressure | 5.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Material | FIBERGLASS AND RUBBER SILICONE CLASS Q FIRST PLY |
| End Inside Diameter | 2.500 INCHES NOMINAL BOTH ENDS IN |
| Wall Thickness | 0.040 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | ROUND |
| Connection Style | ROUND BOTH ENDS |
| Inside Diameter | 2.500 INCHES NOMINAL FIRST END IN |
| Hose Weight | 3.011 OUNCES PER LINEAR FOOT OZ |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 8B783057-75 PRIMARY | Hiller Aircraft Corporation (USA) |
| 3-1664 | Arrowhead Products Corp (USA) |
| 3-1664-20-33-6 PRIMARY | Arrowhead Products Corp (USA) |
| 8B783057 | Hiller Aircraft Corporation (USA) |
NSN 4720-00-541-1542 is a Hose,air Duct, manufactured by Hiller Aircraft Corporation, classified under FSC 4720 (No Item Name Available). Status: active.
NSN 4720-00-541-1542 has 4 cross-referenced part numbers: 8B783057-75 (Hiller Aircraft Corporation), 3-1664 (Arrowhead Products Corp), 3-1664-20-33-6 (Arrowhead Products Corp), 8B783057 (Hiller Aircraft Corporation).
There are 12 known substitutes for 4720-00-541-1542: 5940-00-107-1481, 5110-00-156-0063, 4720-00-217-6815 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 8B783057-75: Material: FIBERGLASS AND RUBBER SILICONE CLASS Q THIRD PLY; End Overall Length: 1.500 INCHES NOMINAL BOTH ENDS IN; Connection Type: SOFT BOTH ENDS; Minimum Inside Bending Radius: 0.820 INCHES IN. 16 total characteristics are documented in the Federal Logistics Information System.