The Inertial Navigation Unit, cataloged under National Stock Number 6605-01-231-9758, is classified within Federal Supply Class 6605 (Navigational Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp. Government technical data includes 6 specifications, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6605-01-231-9758 |
| Primary Part Number | 890500-8 |
| Item Name | Inertial Navigation Unit |
| FSC / FSG | 6605 / 66 — Navigational Instruments |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| Status | ACTIVE |
| Phase | SINGLE |
| Frequency in Hertz | 400.0 |
| Current Type | AC |
| Voltage in Volts | 115.0 AND 200.0 |
| Functional Description | PROVIDES A SELF CONTAINED FULLY AUTOMATIC STRAPDOWN INERTIAL REFERENCE FOR PILOTING AND NAVIGATING AN AIRCRAFT |
| Nuclear Hardness Critical Feature | HARDENED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | H |
| Part Number | Manufacturer |
|---|---|
| 890500-9-551 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA) |
| 890500-8 PRIMARY | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA) |
| Reference | Meaning |
|---|---|
| 883300 | 5/9 Secondary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| 890500 | 5/9 Secondary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| CN-1656/ASN | 5/1 Secondary reference U.S. Government activity |
NSN 6605-01-231-9758 is a Inertial Navigation Unit, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp, classified under FSC 6605, Navigational Instruments. Status: active.
NSN 6605-01-231-9758 has 2 manufacturer part numbers on file: 890500-9-551 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), 890500-8 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp).
3 possible matches (shared part number, not a government interchangeability claim): 6605-01-323-1814, 6605-01-357-8976, 5905-01-475-9187. Verify interchangeability with system specifications before substitution.
Key specifications for 890500-8: Overall Height: 6.530 INCHES NOMINAL IN; Phase: SINGLE; Frequency in Hertz: 400.0; Current Type: AC. 6 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 6605-01-231-9758 has DEMIL Code D. 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.