The Voltmeter, cataloged under National Stock Number 6625-00-899-8161, 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 Custom Metering Company Inc. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6625-00-899-8161 |
| Primary Part Number | SD568 |
| Item Name | Voltmeter |
| FSC / FSG | 6625 / 66 — Electrical and Electronic Properties Measuring and Testing Instruments |
| Manufacturer | Custom Metering Company Inc |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 4 THREADED HOLE(S) |
| Operating Voltage Rating in Volts | 115.0 AC NOMINAL |
| Phase | SINGLE |
| Mounting Arrangement Style | FOUR HOLE/STUD RECTANGULAR/SQUARE |
| Accuracy in Percent | -3.0 TO 3.0 AT FULL SCALE SINGLE INDICATOR ALL RANGES |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 6.000 INCHES NOMINAL IN |
| Power Source | EXTERNAL |
| Mounting Hole Diameter | 0.109 INCHES NOMINAL IN |
| Movement Suspension Method | JEWEL PIVOT BASE |
| Surface Treatment | ENAMEL |
| Frequency Rating | 60.000 HERTZ MINIMUM AND 400.000 HERTZ MAXIMUM |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 3.000 INCHES NOMINAL IN |
| Sensitivity Rating | 10.0 MILLIVOLTS |
| Installation Design | PANEL |
| 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 |
|---|---|
| SD568 PRIMARY | Custom Metering Company Inc (USA) |
| Reference | Meaning |
|---|---|
| SD568 | 3/9 Design control — primary reference Metermaster Inc Metermod Div |
| SD568 | 5/9 Secondary reference Trio Laboratories Inc |
NSN 6625-00-899-8161 is a Voltmeter, manufactured by Custom Metering Company Inc, classified under FSC 6625, Electrical and Electronic Properties Measuring and Testing Instruments. Status: active.
NSN 6625-00-899-8161 has 1 manufacturer part number on file: SD568 (Custom Metering Company Inc).
Key specifications for SD568: Mounting Facility Type and Quantity: 4 THREADED HOLE(S); Overall Height: 4.906 INCHES NOMINAL IN; Operating Voltage Rating in Volts: 115.0 AC NOMINAL; Phase: SINGLE. 14 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.