The Bellows,protection, cataloged under National Stock Number 5342-00-555-1940, is classified within Federal Supply Class 5342 (Hardware, Weapon System) of the Hardware and Abrasives group. The manufacturer of record is Textron Aviation Inc. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5342-00-555-1940 |
| Primary Part Number | 4011120-1 |
| Item Name | Bellows,protection |
| FSC / FSG | 5342 / 53 — Hardware, Weapon System |
| Manufacturer | Textron Aviation Inc |
| Status | ACTIVE |
| FSC Application Data | THRUST ATTENUATOR FUME BOOT INSTALLATION,AIRCRAFT |
| Small End Inside Diameter | 0.500 INCHES NOMINAL IN |
| Large End Inside Diameter | 1.500 INCHES NOMINAL IN |
| Large End Outside Diameter | 2.100 INCHES NOMINAL IN |
| Contracted Length | 3.150 INCHES NOMINAL IN |
| Small End Outside Diameter | 0.564 INCHES NOMINAL IN |
| Neutral Length | 5.150 INCHES NOMINAL IN |
| Features Provided | FLANGED BASE |
| Material | RUBBER SYNTHETIC |
| Durometer Hardness Rating | 70.0 NOMINAL |
| Thickness | 0.032 INCHES NOMINAL IN |
| 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 |
|---|---|
| 4011120-1 PRIMARY | Textron Aviation Inc (USA) |
| Reference | Meaning |
|---|---|
| 4011120-1 | 3/9 Design control — primary reference Cessna Aircraft Company Dba Textron Aviation |
NSN 5342-00-555-1940 is a Bellows,protection, manufactured by Textron Aviation Inc, classified under FSC 5342, Hardware, Weapon System. Status: active.
NSN 5342-00-555-1940 has 1 manufacturer part number on file: 4011120-1 (Textron Aviation Inc).
Key specifications for 4011120-1: FSC Application Data: THRUST ATTENUATOR FUME BOOT INSTALLATION,AIRCRAFT; Small End Inside Diameter: 0.500 INCHES NOMINAL IN; Large End Inside Diameter: 1.500 INCHES NOMINAL IN; Large End Outside Diameter: 2.100 INCHES NOMINAL IN. 11 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.