The Test Set,insulation Breakdown, cataloged under National Stock Number 6625-00-856-7264, is classified within Federal Supply Class 6625 (Electrical and Electronic Properties Measuring and Testing Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Avo Intl. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 6625-00-856-7264 |
| Primary Part Number | 21453-3 |
| Item Name | Test Set,insulation Breakdown |
| FSC / FSG | 6625 / 66 — Electrical and Electronic Properties Measuring and Testing Instruments |
| Manufacturer | Avo Intl |
| Status | ACTIVE |
| Leakage Indicator Type | METER |
| Scale Range | +0.0 TO 100.0 MEGOHMS |
| Wire Lead Length | 144.000 INCHES NOMINAL IN |
| Output Voltage Rating | 500.000 VOLTS NOMINAL |
| Output Current Type | DC |
| Wire Termination Type | OPEN ENDED LUG AND BATTERY STYLE CLIP |
| Meter Quantity | 1 |
| Meter Type | OHMMETER |
| Test Lead Quantity | 2 |
| Installation Design | PORTABLE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 21453-3 | Avo Intl (USA) |
| Reference | Meaning |
|---|---|
| ANUSM158 | 3/2 Design control — primary reference U.S. Government activity |
NSN 6625-00-856-7264 is a Test Set,insulation Breakdown, manufactured by Avo Intl, classified under FSC 6625, Electrical and Electronic Properties Measuring and Testing Instruments. Status: active.
NSN 6625-00-856-7264 has 1 manufacturer part number on file: 21453-3 (Avo Intl).
2 possible matches (shared part number, not a government interchangeability claim): 5930-01-214-6920, 6105-01-341-7816. Verify interchangeability with system specifications before substitution.
Key specifications for 21453-3: Leakage Indicator Type: METER; Overall Height: 9.500 INCHES NOMINAL IN; Scale Range: +0.0 TO 100.0 MEGOHMS; Overall Length: 14.500 INCHES NOMINAL IN. 10 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.
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.