The Fan,centrifugal, cataloged under National Stock Number 1660-01-418-0831, 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 Honeywell International Inc. Div Aerospace - Torrance. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-418-0831 |
| Primary Part Number | 645747-1-1 |
| Item Name | Fan,centrifugal |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Honeywell International Inc. Div Aerospace - Torrance |
| Status | ACTIVE |
| Frequency in Hertz | 400.0 |
| Outlet Inside Height | 3.20 INCHES NOMINAL IN |
| Length | 5.00 INCHES NOMINAL IN |
| Special Test Features | AMBIENT PRESSURE = 16.2 TO 4.36 (BOTH OPERATING AND NON-OPERATING) |
| Criticality Code Justification | AGAV |
| Ambient Temp at Full Rated Power | 71.0 CELSIUS DEGC |
| Specification/standard Data | 96906-MIL-STD-704D GOVERNMENT STANDARD |
| Height | 6.00 INCHES NOMINAL IN |
| Width | 7.00 INCHES NOMINAL IN |
| Test Data Document | 96906-MIL-STD-831 STANDARD (INCLUDES INDUSTRY OR ASSOCIATION STANDARDS, INDIVIDUAL MANUFACTUREER STANDARDS, ETC.). |
| Nuclear Hardness Critical Feature | HARDENED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | M |
| Part Number | Manufacturer |
|---|---|
| 645747-1-1 PRIMARY | Honeywell International Inc. Div Aerospace - Torrance (USA) |
| Reference | Meaning |
|---|---|
| 645747-1-1 | 5/9 Secondary reference Honeywell International, Inc Div Aerospace-Tucson |
| 901-325-103 | 7/2 Vendor item drawing reference The Boeing Company |
| 901-325-103-117 | 3/9 Design control — primary reference The Boeing Company |
NSN 1660-01-418-0831 is a Fan,centrifugal, manufactured by Honeywell International Inc. Div Aerospace - Torrance, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-418-0831 has 1 manufacturer part number on file: 645747-1-1 (Honeywell International Inc. Div Aerospace - Torrance).
Key specifications for 645747-1-1: Frequency in Hertz: 400.0; Outlet Inside Height: 3.20 INCHES NOMINAL IN; Length: 5.00 INCHES NOMINAL IN; Special Test Features: AMBIENT PRESSURE = 16.2 TO 4.36 (BOTH OPERATING AND NON-OPERATING). 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.
NSN 1660-01-418-0831 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.