The Meter,electrical Frequency, cataloged under National Stock Number 6625-01-031-4735, 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 Yokogawa Corporation of America. Government technical data includes 21 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 6625-01-031-4735 |
| Primary Part Number | 255-450ANAN |
| Item Name | Meter,electrical Frequency |
| FSC / FSG | 6625 / 66 — Electrical and Electronic Properties Measuring and Testing Instruments |
| Manufacturer | Yokogawa Corporation of America |
| Status | ACTIVE |
| Meter Body Diameter Behind Mounting Flange | 2.700 INCHES MAXIMUM IN |
| Operating Voltage Rating in Volts | 120.0 AC NOMINAL |
| Mounting Arrangement Style | TWO HOLE/STUD |
| Circuit Attachment Method and Quantity | 2 THREADED STUD |
| Meter Depth Behind Mounting Flange | 1.200 INCHES MAXIMUM IN |
| Circuit Current for Which Designed | AC |
| Scale Selection Method | TERMINAL |
| Accuracy in Percent | -3.0 TO 3.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE |
| Mounting Stud Diameter | 0.112 INCHES NOMINAL IN |
| Power Source | EXTERNAL |
| Style Designator | RECTANGULAR FLUSH MTG |
| Features Provided | ZERO ADJUSTER |
| Distance Between Mounting Facility Centers | 5.3561 INCHES NOMINAL IN |
| Movement Suspension Method | JEWEL PIVOT BASE |
| Color | UNABLE TO DECODE |
| Mounting Stud Length | 0.500 INCHES NOMINAL IN |
| Frequency Rating | 60.0 HERTZ NOMINAL |
| Dial Scale Marking Color | BLACK SINGLE INDICATOR SINGLE RANGE |
| Measurement Range | +55.0 TO 65.0 HERTZ SINGLE INDICATOR SINGLE RANGE |
| Nuclear Hardness Critical Feature | NONHARDENED |
| Installation Design | PANEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Shelf Life Code | 0 |
| Criticality Code | X |
| Unit of Issue | EA |
| Acquisition advice code | JN |
| Part Number | Manufacturer |
|---|---|
| 255-450ANAN PRIMARY | Yokogawa Corporation of America (USA) |
| Reference | Meaning |
|---|---|
| A136001012 | 5/9 Secondary reference Eaton Corporation |
| 50-255-450ANAN | 5/9 Secondary reference General Electric Co Instrument Products Section |
| 136601012 | C/1 Advisory reference — outside the item-of-supply concept Eaton Corporation |
NSN 6625-01-031-4735 is a Meter,electrical Frequency, manufactured by Yokogawa Corporation of America, classified under FSC 6625, Electrical and Electronic Properties Measuring and Testing Instruments. Status: active.
NSN 6625-01-031-4735 has 1 manufacturer part number on file: 255-450ANAN (Yokogawa Corporation of America).
Key specifications for 255-450ANAN: Meter Body Diameter Behind Mounting Flange: 2.700 INCHES MAXIMUM IN; Overall Height: 4.180 INCHES MAXIMUM IN; Operating Voltage Rating in Volts: 120.0 AC NOMINAL; Mounting Arrangement Style: TWO HOLE/STUD. 21 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.