The Hose,air Duct, cataloged under National Stock Number 4720-00-135-7957, 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 Flexco, Inc. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 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 | 4720-00-135-7957 |
| Primary Part Number | 5137 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — No Item Name Available |
| Manufacturer | Flexco, Inc |
| Status | ACTIVE |
| Material | RUBBER SYNTHETIC FIRST PLY |
| Connection Style | ROUND BOTH ENDS |
| Style Designator | FULLY CONVOLUTED |
| Material | STEEL REINFORCING WIRE |
| Material | RUBBER SYNTHETIC SECOND PLY |
| End Inside Diameter | 3.750 INCHES NOMINAL BOTH ENDS IN |
| Connection Type | SOFT BOTH ENDS |
| End Overall Length | 1.750 INCHES NOMINAL BOTH ENDS IN |
| Measuring Method and Length | 13.630 INCHES NOMINAL OVERALL IN |
| Cross-Sectional Shape Style | ROUND |
| Inside Diameter | 3.750 INCHES NOMINAL FIRST END IN |
| Wall Thickness | 0.040 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| IT-4449 | Industrial Tube Co Llc Dba Industrial Tube Co Llc Div Industrial Tube Company, Llc (USA) |
| 216-55340-1 | Triumph Aerostructures, Llc Dba Triumph Aerostructures - Vought Integrated Programs Division (USA) |
| 5137 PRIMARY | Flexco, Inc (USA) |
NSN 4720-00-135-7957 is a Hose,air Duct, manufactured by Flexco, Inc, classified under FSC 4720 (No Item Name Available). Status: active.
NSN 4720-00-135-7957 has 3 cross-referenced part numbers: IT-4449 (Industrial Tube Co Llc Dba Industrial Tube Co Llc Div Industrial Tube Company, Llc), 216-55340-1 (Triumph Aerostructures, Llc Dba Triumph Aerostructures - Vought Integrated Programs Division), 5137 (Flexco, Inc).
There are 12 known substitutes for 4720-00-135-7957: 5120-00-014-1522, 5120-00-024-0348, 9540-00-061-6401 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 5137: Material: RUBBER SYNTHETIC FIRST PLY; Connection Style: ROUND BOTH ENDS; Special Features: ONE SOFT END WITH A 10 DEGREE BEND; Style Designator: FULLY CONVOLUTED. 13 total characteristics are documented in the Federal Logistics Information System.