The Inclinometer,aircraft, cataloged under National Stock Number 6610-01-421-3987, is classified within Federal Supply Class 6610 (Flight Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Executive Instruments, Inc. Dba Executive Instruments Inc Div Executive Technical Services,inc. Dba. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 6610-01-421-3987 |
| Primary Part Number | 400638-105 |
| Item Name | Inclinometer,aircraft |
| FSC / FSG | 6610 / 66 — Flight Instruments |
| Manufacturer | Executive Instruments, Inc. Dba Executive Instruments Inc Div Executive Technical Services,inc. Dba |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 400638-105 PRIMARY | Executive Instruments, Inc. Dba Executive Instruments Inc Div Executive Technical Services,inc. Dba (USA) |
| Reference | Meaning |
|---|---|
| 100638-105 | 5/9 Secondary reference Executive Instruments, Inc. Dba Executive Instruments Inc Use CAGE Code 24363 for Cataloging Div Executive Technical Services,inc. Dba |
| KF000010-001 | 5/1 Secondary reference L3harris Technologies Integrated Systems L.p. Div Integrated Aerospace Systems |
NSN 6610-01-421-3987 is a Inclinometer,aircraft, manufactured by Executive Instruments, Inc. Dba Executive Instruments Inc Div Executive Technical Services,inc. Dba, classified under FSC 6610, Flight Instruments. Status: active.
NSN 6610-01-421-3987 has 1 manufacturer part number on file: 400638-105 (Executive Instruments, Inc. Dba Executive Instruments Inc Div Executive Technical Services,inc. Dba).
Key specifications for 400638-105: Special Features: 5V AC/DC; RELAMPABLE; NIGHT VISION COMPATABLE; C-48-12 CONNECTOR V; End Item Identification: C-141. 0 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 6610-01-421-3987 has DEMIL Code B. 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.