The Fan Assembly,centrifugal, cataloged under National Stock Number 4140-01-658-1105, is classified within Federal Supply Class 4140 (Fans, Air Circulators, and Blower Equipment) of the Refrigeration, AC, and Air Circulating Equipment group. The manufacturer of record is Ametek, Inc. Div Process & Analytical Instruments Division. Government technical data includes 1 specification, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-658-1105 |
| Primary Part Number | 011111000 |
| Item Name | Fan Assembly,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Ametek, Inc. Div Process & Analytical Instruments Division |
| Status | ACTIVE |
| Criticality Code Justification | FEAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| EMD0077453 | General Dynamics Mission Systems, Inc. (USA) |
| 011111000 PRIMARY | Ametek, Inc. Div Process & Analytical Instruments Division (USA) |
NSN 4140-01-658-1105 is a Fan Assembly,centrifugal, manufactured by Ametek, Inc. Div Process & Analytical Instruments Division, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-658-1105 has 2 manufacturer part numbers on file: EMD0077453 (General Dynamics Mission Systems, Inc.), 011111000 (Ametek, Inc. Div Process & Analytical Instruments Division).
Key specifications for 011111000: Criticality Code Justification: FEAT; Special Features: A PART,ASSEMBLY,OR SYSTEM IDENTIFIED AS ESSENTIAL TO WEAPON SYSTEM PERFORMANCE OR OPERATION TO PRESERVE LIFE AND SAFETY OF PERSONNEL; End Item Identification: DIGITAL DECOUPLED WORKSTA V1 TI16 SSBN. 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.
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.