The Meter,electrical Frequency, cataloged under National Stock Number 6625-01-141-8474, 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 Jewell Instruments Llc. Government technical data includes 27 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 6625-01-141-8474 |
| Primary Part Number | 4951-257 |
| Item Name | Meter,electrical Frequency |
| FSC / FSG | 6625 / 66 — Electrical and Electronic Properties Measuring and Testing Instruments |
| Manufacturer | Jewell Instruments Llc |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 4 SCREW AND 4 UNTHREADED HOLE(S) |
| Meter Body Diameter Behind Mounting Flange | 3.930 INCHES NOMINAL IN |
| FSC Application Data | TEST SET,ELECT. EQUIP. |
| Indicator Type | DIAL W/POINTER |
| Mounting Arrangement Style | FOUR HOLE/STUD RECTANGULAR/SQUARE |
| Circuit Attachment Method and Quantity | 2 THREADED STUD |
| Meter Depth Behind Mounting Flange | 2.816 INCHES NOMINAL IN |
| Circuit Current for Which Designed | AC |
| Scale Selection Method | TERMINAL |
| Movement Type | MOVING IRON VANE |
| Accuracy in Percent | -1.5 TO 1.5 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 3.375 INCHES NOMINAL IN |
| Power Source | EXTERNAL |
| Style Designator | RECTANGULAR FLUSH MTG |
| Mounting Hole Diameter | 0.312 INCHES NOMINAL IN |
| Features Provided | ZERO ADJUSTER |
| Movement Suspension Method | JEWEL PIVOT BASE |
| Color | UNABLE TO DECODE |
| Pointer Color | BLACK SINGLE INDICATOR SINGLE RANGE |
| Surface Treatment | PAINT |
| Environmental Protection | SHOCK RESISTANT AND WATERTIGHT |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 3.375 INCHES NOMINAL IN |
| Dial Scale Marking Color | BLACK SINGLE INDICATOR SINGLE RANGE |
| Material | ALUMINUM AND STEEL |
| Furnished Items and Quantity | NUT 8; LOCKWASHER 2; FLAT WASHER 10 |
| 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 | Z |
| Weight | 3.0000 lbs |
| Cube | 0.2963 cu ft |
| Part Number | Manufacturer |
|---|---|
| MK701-285-1 | Mkc Electronics Inc Dba Mk Electronics Div Mkc Electronics Inc, Dba Mk Electronics (USA) |
| 4951-257 PRIMARY | Jewell Instruments Llc (USA) |
| 090-00023 | L3harris Maritime Power & Energy Solutions, Inc (USA) |
| Reference | Meaning |
|---|---|
| 495-257 | 5/9 Secondary reference Jewell Instruments, Llc Dba Modutec Use CAGE Code 33005 for Cataloging |
NSN 6625-01-141-8474 is a Meter,electrical Frequency, manufactured by Jewell Instruments Llc, classified under FSC 6625, Electrical and Electronic Properties Measuring and Testing Instruments. Status: active.
NSN 6625-01-141-8474 has 3 manufacturer part numbers on file: MK701-285-1 (Mkc Electronics Inc Dba Mk Electronics Div Mkc Electronics Inc, Dba Mk Electronics), 4951-257 (Jewell Instruments Llc), 090-00023 (L3harris Maritime Power & Energy Solutions, Inc).
Key specifications for 4951-257: Mounting Facility Type and Quantity: 4 SCREW AND 4 UNTHREADED HOLE(S); Meter Body Diameter Behind Mounting Flange: 3.930 INCHES NOMINAL IN; Overall Height: 4.421 INCHES NOMINAL IN; FSC Application Data: TEST SET,ELECT. EQUIP.. 27 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.