PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SK51Meter,electrical Frequency

Libby Power Systems, Llc · NSN 6625-00-916-2849 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-916-2849 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-916-2849. Primary manufacturer part number: SK51.
Features
  • Meter,electrical Frequency — FSC 6625
  • Installation Design: PANEL
  • Mounting Arrangement Style: THREE HOLE/STUD BOLT CIRCLE
  • Mounting Facility Type and Quantity: 3 UNTHREADED HOLE(S)
  • Accuracy in Percent: -2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
  • Surface Treatment: ANODIZE
  • Dial Scale Marking Color: WHITE SINGLE INDICATOR SINGLE RANGE
  • Material: STEEL
Applications
  • Applications requiring Steel construction
General Description

The Meter,electrical Frequency, cataloged under National Stock Number 6625-00-916-2849, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Libby Power Systems, Llc. Government technical data includes 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6625-00-916-2849
Primary Part NumberSK51
Item NameMeter,electrical Frequency
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerLibby Power Systems, Llc
StatusCANCELLED
Installation DesignPANEL
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Mounting Facility Type and Quantity3 UNTHREADED HOLE(S)
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Surface TreatmentANODIZE
Dial Scale Marking ColorWHITE SINGLE INDICATOR SINGLE RANGE
MaterialSTEEL
Style DesignatorROUND FLUSH MTG
Measurement Range+380.0 TO 420.0 HERTZ SINGLE INDICATOR SINGLE RANGE
Movement TypeMOVING COIL, PERMANENT MAGNET
Meter Body Diameter Behind Mounting Flange2.800 INCHES MAXIMUM IN
ColorUNABLE TO DECODE
Circuit Attachment Method and Quantity2 THREADED STUD
Meter Depth Behind Mounting Flange1.250 INCHES NOMINAL IN
Mounting Stud Length0.750 INCHES NOMINAL IN
Mounting Bolt Circle Diameter3.160 INCHES NOMINAL IN
Overall Diameter3.495 INCHES NOMINAL IN
Mounting Hole Diameter0.138 INCHES NOMINAL IN
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Mounting Facility Type and Quantity3 UNTHREADED HOLE(S)
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Surface TreatmentANODIZE
Dial Scale Marking ColorWHITE SINGLE INDICATOR SINGLE RANGE
MaterialSTEEL
Style DesignatorROUND FLUSH MTG
Installation DesignPANEL
Measurement Range+380.0 TO 420.0 HERTZ SINGLE INDICATOR SINGLE RANGE
Movement TypeMOVING COIL, PERMANENT MAGNET
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
No Item Name Available
6625-00-935-136586885 SUCCESSOR
Meter,electrical Frequency
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
2920-00-710-9194KIT82796-17 INTERCHANGEABLE
Parts Kit,ignition Magneto
Chief of Engineers Dept of Army
Cross-Reference Index
Part NumberManufacturer
SK51 PRIMARY Libby Power Systems, Llc (USA)
AED3N30291 Jewell Instruments Llc (USA)
Related Parts
6625-00-072-6858SUCCESSOR
NO ITEM NAME AVAILABLE
6625-00-935-1365SUCCESSOR
METER,ELECTRICAL FREQUENCY
86885
2920-00-710-9194INTERCHANGEABLE
PARTS KIT,IGNITION MAGNETO
KIT82796-17

Frequently Asked Questions

What is NSN 6625-00-916-2849?

NSN 6625-00-916-2849 is a Meter,electrical Frequency, manufactured by Libby Power Systems, Llc, classified under FSC 6625 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6625-00-916-2849?

NSN 6625-00-916-2849 has 2 cross-referenced part numbers: SK51 (Libby Power Systems, Llc), AED3N30291 (Jewell Instruments Llc).

What NSN replaces 6625-00-916-2849?

There are 3 known substitutes for 6625-00-916-2849: 6625-00-072-6858, 6625-00-935-1365, 2920-00-710-9194. Verify interchangeability with system specifications before substitution.

What are the specifications of SK51?

Key specifications for SK51: Installation Design: PANEL; Mounting Arrangement Style: THREE HOLE/STUD BOLT CIRCLE; Mounting Facility Type and Quantity: 3 UNTHREADED HOLE(S); Accuracy in Percent: -2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6625-00-916-2849 still in active supply?

NSN 6625-00-916-2849 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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