The Indicator,vertical Velocity, cataloged under National Stock Number 6610-00-477-6691, is classified within Federal Supply Class 6610 (Flight Instruments) of the Instruments and Laboratory Equipment group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6610-00-477-6691 |
| Item Name | Indicator,vertical Velocity |
| FSC / FSG | 6610 / 66 — Flight Instruments |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 1 THREADED BEZEL |
| Mechanical Connection Quantity | 1 |
| Mechanical Connection Size | 7/16-20 THD |
| Height | 2.375 INCHES NOMINAL IN |
| Color | WHITE POINTER OVERALL |
| Depth | 5.410 INCHES NOMINAL IN |
| Width | 2.375 INCHES NOMINAL IN |
| Pointer Finish | NONLUMINOUS SINGLE POINTER |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 1675-6BDA6-1 | 3/2 Design control — primary reference U.S. Government activity |
| MS28075-2B | 4/1 Identification reference U.S. Government activity |
NSN 6610-00-477-6691 is a Indicator,vertical Velocity, classified under FSC 6610, Flight Instruments. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6610-01-344-0972. Verify interchangeability with system specifications before substitution.
Key specifications for 6610-00-477-6691: Mounting Facility Type and Quantity: 1 THREADED BEZEL; Mechanical Connection Quantity: 1; Mechanical Connection Size: 7/16-20 THD; Height: 2.375 INCHES NOMINAL IN. 8 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 6610-00-477-6691 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.