PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

990C776H16Meter,electrical Frequency

Northrop Grumman Systems Corporation Dba Electronic Systems · NSN 6625-00-938-7743 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-938-7743 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-938-7743. Primary manufacturer part number: 990C776H16.
Features
  • Meter,electrical Frequency — FSC 6625
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 2.250 INCHES NOMINAL IN
  • Mounting Arrangement Style: FOUR HOLE/STUD RECTANGULAR/SQUARE
  • Material: STEEL
  • Accuracy in Percent: -1.0 TO 1.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
  • Circuit Attachment Method and Quantity: 2 SOLDER STUD
  • Meter Body Diameter Behind Mounting Flange: 2.720 INCHES MAXIMUM IN
  • Mounting Facility Type and Quantity: 4 THREADED STUD(S)
Applications
  • Applications requiring Steel construction
General Description

The Meter,electrical Frequency, cataloged under National Stock Number 6625-00-938-7743, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Northrop Grumman Systems Corporation Dba Electronic Systems. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-00-938-7743
Primary Part Number990C776H16
Item NameMeter,electrical Frequency
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation Dba Electronic Systems
StatusACTIVE
Center to Center Distance Between Mounting Facilities Parallel to Width2.250 INCHES NOMINAL IN
Mounting Arrangement StyleFOUR HOLE/STUD RECTANGULAR/SQUARE
MaterialSTEEL
Accuracy in Percent-1.0 TO 1.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Circuit Attachment Method and Quantity2 SOLDER STUD
Meter Body Diameter Behind Mounting Flange2.720 INCHES MAXIMUM IN
Mounting Facility Type and Quantity4 THREADED STUD(S)
Mounting Stud Diameter0.112 INCHES NOMINAL IN
Style DesignatorRECTANGULAR FLUSH MTG
Meter Depth Behind Mounting Flange4.750 INCHES MAXIMUM IN
Center to Center Distance Between Mounting Facilities Parallel to Length2.250 INCHES NOMINAL IN
Installation DesignPANEL
Mounting Stud Length0.500 INCHES NOMINAL IN
Measurement Range+57.0 TO 63.0 HERTZ SINGLE INDICATOR SINGLE RANGE
Center to Center Distance Between Mounting Facilities Parallel to Width2.250 INCHES NOMINAL IN
Mounting Arrangement StyleFOUR HOLE/STUD RECTANGULAR/SQUARE
MaterialSTEEL
Accuracy in Percent-1.0 TO 1.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Circuit Attachment Method and Quantity2 SOLDER STUD
Meter Body Diameter Behind Mounting Flange2.720 INCHES MAXIMUM IN
Mounting Facility Type and Quantity4 THREADED STUD(S)
Mounting Stud Diameter0.112 INCHES NOMINAL IN
Style DesignatorRECTANGULAR FLUSH MTG
Meter Depth Behind Mounting Flange4.750 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeJN
Weight1.0400 lbs
Cube0.0597 cu ft
Verified Substitutes 12
3110-00-100-07693383 INTERCHANGEABLE
Cone and Rollers,tapered Roller
The Timken Corporation
5945-00-232-397405006200 INTERCHANGEABLE
Relay,electromagnetic
Thales Components Corp Div Thales Components Corporation
5331-00-251-8839MS28778-12 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
5920-00-322-2122SM-D-2015983 INTERCHANGEABLE
Arrester,lightning
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
6110-00-468-22963383 INTERCHANGEABLE
Controller,motor
Eaton Corp Opns & Technical Center
7690-00-584-4698 INTERCHANGEABLE
Decal
5962-00-658-32045781 INTERCHANGEABLE
Microcircuit,linear
Analog Devices, Inc. Div Corporate Headquarters
2510-00-752-17427521742 INTERCHANGEABLE
Alignment Clip,leaf Spring
U S Army Tank Automotive Command Amsta-Im-Mm
4730-00-820-6204639-F-6 INTERCHANGEABLE
Plug,tube Fitting,threaded
Parker-Hannifin Corp Div Fluid System Connector Division
5935-00-874-331310519446 INTERCHANGEABLE
Adapter,connector
Us Army Aviation and Missile Command
Cross-Reference Index
Part NumberManufacturer
990C776H16 Northrop Grumman Systems Corporation Dba Electronic Systems (USA)
3383 Simpson Electric Co Simpson Instruments Div (USA)
A10503 E I L Instruments Inc (USA)
Related Parts
3110-00-100-0769INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
3383
5945-00-232-3974INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
05006200
5331-00-251-8839INTERCHANGEABLE
O-RING
MS28778-12
5920-00-322-2122INTERCHANGEABLE
ARRESTER,LIGHTNING
SM-D-2015983
6110-00-468-2296INTERCHANGEABLE
CONTROLLER,MOTOR
3383
7690-00-584-4698INTERCHANGEABLE
DECAL
5962-00-658-3204INTERCHANGEABLE
MICROCIRCUIT,LINEAR
5781
2510-00-752-1742INTERCHANGEABLE
ALIGNMENT CLIP,LEAF SPRING
7521742
4730-00-820-6204INTERCHANGEABLE
PLUG,TUBE FITTING,THREADED
639-F-6
5935-00-874-3313INTERCHANGEABLE
ADAPTER,CONNECTOR
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5340-01-080-0562INTERCHANGEABLE
CLIP,RETAINING
3383
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BRACKET,ACCELEROMET
3383

Frequently Asked Questions

What is NSN 6625-00-938-7743?

NSN 6625-00-938-7743 is a Meter,electrical Frequency, manufactured by Northrop Grumman Systems Corporation Dba Electronic Systems, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-00-938-7743?

NSN 6625-00-938-7743 has 3 cross-referenced part numbers: 990C776H16 (Northrop Grumman Systems Corporation Dba Electronic Systems), 3383 (Simpson Electric Co Simpson Instruments Div), A10503 (E I L Instruments Inc).

What NSN replaces 6625-00-938-7743?

There are 12 known substitutes for 6625-00-938-7743: 3110-00-100-0769, 5945-00-232-3974, 5331-00-251-8839 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 990C776H16?

Key specifications for 990C776H16: Center to Center Distance Between Mounting Facilities Parallel to Width: 2.250 INCHES NOMINAL IN; Special Features: ALSO DESIGNED FOR NONMAGNETIC PANELS; Mounting Arrangement Style: FOUR HOLE/STUD RECTANGULAR/SQUARE; Material: STEEL. 30 total characteristics are documented in the Federal Logistics Information System.

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