The Meter,electrical Frequency, cataloged under National Stock Number 6625-00-189-6972, is classified within Federal Supply Class 6625 (Electrical and Electronic Properties Measuring and Testing Instruments) of the Instruments and Laboratory Equipment group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 6625-00-189-6972 |
| Item Name | Meter,electrical Frequency |
| FSC / FSG | 6625 / 66 — Electrical and Electronic Properties Measuring and Testing Instruments |
| Status | ACTIVE |
| Phase | SINGLE |
| Nondefinitive Spec/std Data | MR49W42AFH TYPE |
| Frequency Rating | 400.0 HERTZ NOMINAL |
| Frequency Response Range | +395.0 TO 405.0 HERTZ |
| 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 | ZF |
| Weight | 3.1200 lbs |
| Cube | 0.2963 cu ft |
| Reference | Meaning |
|---|---|
| PFM400E4MN2A | C/1 Advisory reference — outside the item-of-supply concept Amf Electronics Div |
| MR49W42AFH | C/1 Advisory reference — outside the item-of-supply concept L-3 Communications Westwood Corporation Dba Nmp Division Div L3 Westwood Corporation |
| 953-7B | C/1 Advisory reference — outside the item-of-supply concept Jewell Instruments, Llc Dba Modutec Use CAGE Code 33005 for Cataloging |
| 612-401-1947670ALTPPC109 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| MR49W42AFH | C/1 Advisory reference — outside the item-of-supply concept M M C Instrument Laboratories Inc |
| MIL-M-23167 | 4/1 Identification reference U.S. Government activity |
| MR49W42AFH | 2/2 Government specification standardization U.S. Government activity |
| MR49W42AFH | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 6625-00-189-6972 is a Meter,electrical Frequency, classified under FSC 6625, Electrical and Electronic Properties Measuring and Testing Instruments. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 6625-00-240-7524, 6625-00-954-9495. Verify interchangeability with system specifications before substitution.
Key specifications for 6625-00-189-6972: Overall Height: 4.750 INCHES NOMINAL IN; Phase: SINGLE; Overall Length: 9.000 INCHES NOMINAL IN; Overall Width: 4.750 INCHES NOMINAL IN. 4 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.