The Hose,air Duct, cataloged under National Stock Number 4720-00-078-3274, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Industrial Tube Co Llc Dba Industrial Tube Co Llc Div Industrial Tube Company, Llc. Government technical data includes 19 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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 | 4720-00-078-3274 |
| Primary Part Number | IT103-4-37 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Industrial Tube Co Llc Dba Industrial Tube Co Llc Div Industrial Tube Company, Llc |
| Status | ACTIVE |
| Measuring Method and Length | 18.500 INCHES NOMINAL OVERALL IN |
| Minimum Inside Bending Radius | 0.500 INCHES IN |
| Connection Style | ROUND BOTH ENDS |
| Connection Type | SOFT BOTH ENDS |
| Style Designator | HELICALLY WOUND CONTINOUS WIRE SUPPORTED |
| Material Document and Classification | MIL-H-6855,CLASS 2,GRADE 60 MIL SPEC ALL MATERIAL RESPONSES FIRST PLY |
| Material Document and Classification | MIL-H-6855,CLASS 2,GRADE 60 MIL SPEC ALL MATERIAL RESPONSES FOURTH PLY |
| Material Document and Classification | MIL-H-6855,CLASS 2,GRADE 60 MIL SPEC ALL MATERIAL RESPONSES THIRD PLY |
| Cross-Sectional Shape Style | ROUND |
| Wall Thickness | 0.060 INCHES NOMINAL IN |
| Operating Pressure | 5.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Features Provided | OZONE RESISTANT |
| Inside Diameter | 1.000 INCHES NOMINAL FIRST END IN |
| End Overall Length | 1.000 INCHES NOMINAL BOTH ENDS IN |
| End Inside Diameter | 1.500 INCHES NOMINAL BOTH ENDS IN |
| Material | FIBERGLASS AND RUBBER CHLOROPRENE CLASS CR THIRD PLY |
| Material | FIBERGLASS AND RUBBER CHLOROPRENE CLASS CR FIRST PLY |
| Material | FIBERGLASS AND RUBBER CHLOROPRENE CLASS CR FOURTH PLY |
| Material | PLASTIC POLYAMIDE NYLON SECOND PLY |
| 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 |
|---|---|
| IT103-4-37 PRIMARY | Industrial Tube Co Llc Dba Industrial Tube Co Llc Div Industrial Tube Company, Llc (USA) |
| FT2151-4-37 | Flexible Technologies Inc (USA) |
| Reference | Meaning |
|---|---|
| 0218-0100-0111 | 5/9 Secondary reference Flexible Technologies Inc |
| IT103 | D/9 Drawing number reference only Industrial Tube Co Llc Dba Industrial Tube Co Llc Div Industrial Tube Company, Llc |
| BEL100208007406 | 5/9 Secondary reference Flexfab Llc |
NSN 4720-00-078-3274 is a Hose,air Duct, manufactured by Industrial Tube Co Llc Dba Industrial Tube Co Llc Div Industrial Tube Company, Llc, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-00-078-3274 has 2 manufacturer part numbers on file: IT103-4-37 (Industrial Tube Co Llc Dba Industrial Tube Co Llc Div Industrial Tube Company, Llc), FT2151-4-37 (Flexible Technologies Inc).
6 possible matches (shared part number, not a government interchangeability claim): 4720-00-195-2329, 4720-00-195-2356, 4720-00-195-2388. Verify interchangeability with system specifications before substitution.
Key specifications for IT103-4-37: Measuring Method and Length: 18.500 INCHES NOMINAL OVERALL IN; Minimum Inside Bending Radius: 0.500 INCHES IN; Connection Style: ROUND BOTH ENDS; Connection Type: SOFT BOTH ENDS. 19 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.