The Indicator,vertical Velocity, cataloged under National Stock Number 6610-01-149-4753, is classified within Federal Supply Class 6610 (Flight Instruments) of the Instruments and Laboratory Equipment group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 6610-01-149-4753 |
| Item Name | Indicator,vertical Velocity |
| FSC / FSG | 6610 / 66 — Flight Instruments |
| Status | ACTIVE |
| Length | 2.375 INCHES NOMINAL IN |
| Mechanical Connection Quantity | 1 |
| Electrical Connection Quantity | 1 |
| Electrical Connection Identifying Number | PT1H-8-3P |
| Mechanical Connection Type | INTERNAL STRAIGHT THREAD |
| Mechanical Connection Size | 0.438-20 UNF 3B |
| Contact Quantity | 3 |
| Depth | 5.156 INCHES NOMINAL IN |
| Width | 2.375 INCHES NOMINAL IN |
| Pointer Finish | FLUORESCENT SINGLE POINTER |
| Pointer Purpose | VERTICAL VELOCITY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 22417 | 5/2 Secondary reference U.S. Government activity |
| 8-64922B | 7/9 Vendor item drawing reference Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
| 8-64922B | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector |
| 35160-1110 | 3/2 Design control — primary reference U.S. Government activity |
NSN 6610-01-149-4753 is a Indicator,vertical Velocity, classified under FSC 6610, Flight Instruments. Status: active.
4 possible matches (shared part number, not a government interchangeability claim): 5310-01-275-1891, 5995-01-414-8302, 1095-01-568-7215. Verify interchangeability with system specifications before substitution.
Key specifications for 6610-01-149-4753: Length: 2.375 INCHES NOMINAL IN; Mechanical Connection Quantity: 1; Electrical Connection Quantity: 1; Electrical Connection Identifying Number: PT1H-8-3P. 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 6610-01-149-4753 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.