The Bellows,pressure, cataloged under National Stock Number 1660-01-504-8466, is classified within Federal Supply Class 1660 (Aircraft Air Conditioning, Heating, and Pressurizing Equipment) of the Aircraft Components and Accessories group. The manufacturer of record is Industrial Tube Co Llc Dba Industrial Tube Co Llc Div Industrial Tube Company, Llc. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-504-8466 |
| Primary Part Number | IT-5909 |
| Item Name | Bellows,pressure |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Industrial Tube Co Llc Dba Industrial Tube Co Llc Div Industrial Tube Company, Llc |
| Status | ACTIVE |
| Outside Diameter | 3.600 INCHES NOMINAL IN |
| Operating Pressure | 18.000 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Specific Use | AIR CONDITIONING SYSTEM |
| Inside Diameter | 3.500 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| IT-5909 PRIMARY | Industrial Tube Co Llc Dba Industrial Tube Co Llc Div Industrial Tube Company, Llc (USA) |
| Reference | Meaning |
|---|---|
| GB504AK1 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
NSN 1660-01-504-8466 is a Bellows,pressure, manufactured by Industrial Tube Co Llc Dba Industrial Tube Co Llc Div Industrial Tube Company, Llc, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-504-8466 has 1 manufacturer part number on file: IT-5909 (Industrial Tube Co Llc Dba Industrial Tube Co Llc Div Industrial Tube Company, Llc).
Key specifications for IT-5909: Outside Diameter: 3.600 INCHES NOMINAL IN; Overall Length: 4.380 INCHES MINIMUM AND 4.620 INCHES MAXIMUM IN; Operating Pressure: 18.000 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS; Specific Use: AIR CONDITIONING SYSTEM. 4 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.
NSN 1660-01-504-8466 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.