The Butterfly,hydraulic, cataloged under National Stock Number 1650-01-065-3498, is classified within Federal Supply Class 1650 (Aircraft Hydraulic, Vacuum, and De-icing System Components) of the Aircraft Components and Accessories group. The manufacturer of record is Airtronics, Llc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-01-065-3498 |
| Primary Part Number | AT-101-2440 |
| Item Name | Butterfly,hydraulic |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Airtronics, Llc |
| Status | ACTIVE |
| General Characteristics Item Description | 0.975 IN. MAX DIA 0.965 IN. MIN DIA AND 0.1275 IN. THK MAX 0.1265 IN. THK MIN 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 |
|---|---|
| AT-101-2440 | Airtronics, Llc (USA) |
| Reference | Meaning |
|---|---|
| 504821-1 | 5/9 Secondary reference U.S. Government activity |
| 504804-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1650-01-065-3498 is a Butterfly,hydraulic, manufactured by Airtronics, Llc, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-01-065-3498 has 1 manufacturer part number on file: AT-101-2440 (Airtronics, Llc).
Key specifications for AT-101-2440: General Characteristics Item Description: 0.975 IN. MAX DIA 0.965 IN. MIN DIA AND 0.1275 IN. THK MAX 0.1265 IN. THK MIN IN; End Item Identification: ACFT F-16A AND B A. 1 specification is 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 1650-01-065-3498 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.