PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20-318Meter,electrical Frequency

Electro Switch Corp. Dba Arga Controls a Unit of Electro Switch Div Arga Controls a Unit of Electo Switch Corp. · NSN 6625-01-135-5455 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-01-135-5455 — this item is cataloged by the U.S. Government under National Stock Number 6625-01-135-5455. Primary manufacturer part number: 20-318.
Features
  • Meter,electrical Frequency — FSC 6625
  • Style Designator: ROUND FLUSH MTG
  • Circuit Current for Which Designed: AC
  • Material: PLASTIC
  • Special Test Features: COMPLIES WITH MIL-M-10304
  • Nuclear Hardness Critical Feature: NONHARDENED
  • Pointer Color: BLACK SINGLE INDICATOR SINGLE RANGE
  • Mounting Facility Type and Quantity: 3 SCREW AND 3 UNTHREADED HOLE(S)
Applications
  • Applications requiring Plastic construction
General Description

The Meter,electrical Frequency, cataloged under National Stock Number 6625-01-135-5455, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Electro Switch Corp. Dba Arga Controls a Unit of Electro Switch Div Arga Controls a Unit of Electo Switch Corp.. Government technical data includes 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 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: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-01-135-5455
Primary Part Number20-318
Item NameMeter,electrical Frequency
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerElectro Switch Corp. Dba Arga Controls a Unit of Electro Switch Div Arga Controls a Unit of Electo Switch Corp.
StatusCANCELLED
Style DesignatorROUND FLUSH MTG
Circuit Current for Which DesignedAC
MaterialPLASTIC
Special Test FeaturesCOMPLIES WITH MIL-M-10304
Nuclear Hardness Critical FeatureNONHARDENED
Pointer ColorBLACK SINGLE INDICATOR SINGLE RANGE
Mounting Facility Type and Quantity3 SCREW AND 3 UNTHREADED HOLE(S)
FSC Application DataTEST SET,ELECT. EQUIP.
Circuit Attachment Method and Quantity2 THREADED STUD
Features ProvidedZERO ADJUSTER
Movement Suspension MethodJEWEL PIVOT BASE
Power SourceEXTERNAL
Scale Selection MethodTERMINAL
Scale Graduation TypeLINEAR SINGLE INDICATOR SINGLE RANGE
Measurement Range+380.0 TO 420.0 HERTZ SINGLE INDICATOR SINGLE RANGE
Operating Voltage Rating in Volts115.0 AC NOMINAL
Mounting Hole Diameter0.150 INCHES NOMINAL IN
Indicator TypeDIAL W/POINTER
Movement TypeMOVING COIL, PERMANENT MAGNET
Environmental ProtectionFUNGUS RESISTANT AND SHOCK RESISTANT AND VIBRATION RESISTANT AND WATER RESISTANT
Furnished Items and QuantityNUT 7; LOCKWASHER 5; FLAT WASHER 2
Sensitivity Rating135.0 VOLTS
Mounting Bolt Circle Diameter3.160 INCHES NOMINAL IN
Meter Body Diameter Behind Mounting Flange2.800 INCHES MAXIMUM IN
Scale Division Quantity80 SINGLE INDICATOR SINGLE RANGE
Installation DesignPANEL
Frequency Rating380.0 HERTZ MINIMUM AND 420.0 HERTZ MAXIMUM
Meter Depth Behind Mounting Flange4.600 INCHES MAXIMUM IN
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeJN
Weight1.3500 lbs
Cube0.0640 cu ft
Verified Substitutes 12
No Item Name Available
Cap,electrical
Tester,semiconductr
6625-01-103-0801530 SUCCESSOR
Simulator,resolver
North Atlantic Industries, Inc. Dba North Atlantic Industries
Eraser,magnetic
4820-00-038-701820318 INTERCHANGEABLE
Valve,safety Relief
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
3110-00-156-1909 INTERCHANGEABLE
Bearing,ball,thrust
3010-00-167-9319 INTERCHANGEABLE
Coupling Half,shaft
5320-00-515-8602 INTERCHANGEABLE
Rivet,split
4820-00-586-421307440002128 INTERCHANGEABLE
Seat,valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
Cross-Reference Index
Part NumberManufacturer
530 Phaostron Instrument and Electronic Company (USA)
CL400 Electro Switch Corp. Dba Arga Controls a Unit of Electro Switch Div Arga Controls a Unit of Electo Switch Corp. (USA)
4-033 Electro Switch Corp. Dba Arga Controls a Unit of Electro Switch Div Arga Controls a Unit of Electo Switch Corp. (USA)
20-318 PRIMARY Electro Switch Corp. Dba Arga Controls a Unit of Electro Switch Div Arga Controls a Unit of Electo Switch Corp. (USA)
CL400 Crydom Corp (USA)
Related Parts
6625-00-933-1253SUCCESSOR
NO ITEM NAME AVAILABLE
5999-00-185-0748SUCCESSOR
CAP,ELECTRICAL
6625-01-087-5441SUCCESSOR
TESTER,SEMICONDUCTR
6625-01-103-0801SUCCESSOR
SIMULATOR,RESOLVER
530
7035-01-260-9543SUCCESSOR
ERASER,MAGNETIC
4820-00-038-7018INTERCHANGEABLE
VALVE,SAFETY RELIEF
20318
3110-00-156-1909INTERCHANGEABLE
BEARING,BALL,THRUST
3010-00-167-9319INTERCHANGEABLE
COUPLING HALF,SHAFT
5320-00-515-8602INTERCHANGEABLE
RIVET,SPLIT
4820-00-586-4213INTERCHANGEABLE
SEAT,VALVE
07440002128
6130-00-643-2151INTERCHANGEABLE
RECTIFIER,METALLIC
1650-00-730-4045INTERCHANGEABLE
PARTS KIT,VALVE
19698

Frequently Asked Questions

What is NSN 6625-01-135-5455?

NSN 6625-01-135-5455 is a Meter,electrical Frequency, manufactured by Electro Switch Corp. Dba Arga Controls a Unit of Electro Switch Div Arga Controls a Unit of Electo Switch Corp., classified under FSC 6625 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6625-01-135-5455?

NSN 6625-01-135-5455 has 5 cross-referenced part numbers: 530 (Phaostron Instrument and Electronic Company), CL400 (Electro Switch Corp. Dba Arga Controls a Unit of Electro Switch Div Arga Controls a Unit of Electo Switch Corp.), 4-033 (Electro Switch Corp. Dba Arga Controls a Unit of Electro Switch Div Arga Controls a Unit of Electo Switch Corp.), 20-318 (Electro Switch Corp. Dba Arga Controls a Unit of Electro Switch Div Arga Controls a Unit of Electo Switch Corp.), CL400 (Crydom Corp).

What NSN replaces 6625-01-135-5455?

There are 12 known substitutes for 6625-01-135-5455: 6625-00-933-1253, 5999-00-185-0748, 6625-01-087-5441 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20-318?

Key specifications for 20-318: Style Designator: ROUND FLUSH MTG; Circuit Current for Which Designed: AC; Material: PLASTIC; Special Test Features: COMPLIES WITH MIL-M-10304. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6625-01-135-5455 still in active supply?

NSN 6625-01-135-5455 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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