PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

65A81C134Meter,electrical Frequency

Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier · NSN 6625-00-006-0604 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-006-0604 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-006-0604. Primary manufacturer part number: 65A81C134.
Features
  • Meter,electrical Frequency — FSC 6625
  • Special Test Features: CONFORMS TO MIL-M-10304/14
  • Mounting Bolt Circle Diameter: 3.160 INCHES NOMINAL IN
  • Frequency Rating: 400.0 HERTZ NOMINAL
  • Measurement Range: +390.0 TO 410.0 HERTZ SINGLE INDICATOR SINGLE RANGE
  • Scale Division Quantity: 20 SINGLE INDICATOR SINGLE RANGE
  • Dial Scale Marking Color: BLACK SINGLE INDICATOR SINGLE RANGE
  • Installation Design: PANEL
Applications
  • Applications requiring Steel Corrosion Resisting construction
General Description

The Meter,electrical Frequency, cataloged under National Stock Number 6625-00-006-0604, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-00-006-0604
Primary Part Number65A81C134
Item NameMeter,electrical Frequency
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerNaval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
StatusACTIVE
Special Test FeaturesCONFORMS TO MIL-M-10304/14
Mounting Bolt Circle Diameter3.160 INCHES NOMINAL IN
Frequency Rating400.0 HERTZ NOMINAL
Measurement Range+390.0 TO 410.0 HERTZ SINGLE INDICATOR SINGLE RANGE
Scale Division Quantity20 SINGLE INDICATOR SINGLE RANGE
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Installation DesignPANEL
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Environmental ProtectionCOLD RESISTANT AND HEAT RESISTANT AND SHOCK RESISTANT AND SUBMERSIBLE AND VIBRATION RESISTANT AND WATERTIGHT
Indicator TypeDIAL W/POINTER
Meter Depth Behind Mounting Flange1.660 INCHES MAXIMUM IN
Furnished Items and QuantityMTG HDW 3; TERM. HDW 2
Overall Diameter3.510 INCHES MAXIMUM IN
Power SourceEXTERNAL
Frequency Response Range+360.000 TO 440.000 HERTZ
PhaseSINGLE
Scale Graduation TypeLINEAR SINGLE INDICATOR SINGLE RANGE
Mounting Facility Type and Quantity3 SCREW AND 3 UNTHREADED HOLE(S)
Pointer ColorBLACK SINGLE INDICATOR SINGLE RANGE
Circuit Attachment Method and Quantity2 THREADED STUD
Circuit Current for Which DesignedAC
Surface TreatmentENAMEL SEMIGLOSS
Nuclear Hardness Critical FeatureNONHARDENED
Style DesignatorROUND FLUSH MTG
Supplementary Features2 VA MAX POWER CONSUMPTION
ColorUNABLE TO DECODE
MaterialSTEEL CORROSION RESISTING
FSC Application DataTEST SET,ELECT. EQUIP.
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeJN
Weight0.7456 lbs
Cube0.0363 cu ft
Verified Substitutes 8
5950-00-438-339016306 INTERCHANGEABLE
Transformer,power
Robert M. Hadley Company, Inc.
4810-00-692-366910870 INTERCHANGEABLE
Valve,linear,directional Control
Moog Inc
5950-00-824-3859577R554H10 INTERCHANGEABLE
Reactor
Northrop Grumman Support Services Corp
5365-01-288-208810870 INTERCHANGEABLE
Bushing,machine Thread
Flowserve Inc
6750-01-427-3860 INTERCHANGEABLE
Film,photographic
6515-01-506-925696111 INTERCHANGEABLE
Catheter,tracheal
Mallinckrodt Inc Anesthesia Products
5985-01-646-770210870 INTERCHANGEABLE
Antenna
Gatr Technologies, Inc.
5120-01-654-1723 INTERCHANGEABLE
Screwdriver Attachment,socket Wr
Cross-Reference Index
Part NumberManufacturer
365-064 Jewell Instruments Llc (USA)
M-3197 Metermaster Inc Miscorp Div (USA)
10870 E I L Instruments Inc (USA)
MK777-93 Mkc Electronics Inc Dba Mk Electronics Div Mkc Electronics Inc, Dba Mk Electronics (USA)
00000-4757 Harsco Corp Bmy-Combat Systems Div (USA)
65A81C134 Eur-Pac Corporation (USA)
65A81C134 PRIMARY Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
361909 Ideal Precision Meter Co Dba Ideal Precision Meter Co (USA)
Related Parts
5950-00-438-3390INTERCHANGEABLE
TRANSFORMER,POWER
16306
4810-00-692-3669INTERCHANGEABLE
VALVE,LINEAR,DIRECTIONAL CONTROL
10870
5950-00-824-3859INTERCHANGEABLE
REACTOR
577R554H10
5365-01-288-2088INTERCHANGEABLE
BUSHING,MACHINE THREAD
10870
6750-01-427-3860INTERCHANGEABLE
FILM,PHOTOGRAPHIC
6515-01-506-9256INTERCHANGEABLE
CATHETER,TRACHEAL
96111
5985-01-646-7702INTERCHANGEABLE
ANTENNA
10870
5120-01-654-1723INTERCHANGEABLE
SCREWDRIVER ATTACHMENT,SOCKET WR

Frequently Asked Questions

What is NSN 6625-00-006-0604?

NSN 6625-00-006-0604 is a Meter,electrical Frequency, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-00-006-0604?

NSN 6625-00-006-0604 has 8 cross-referenced part numbers: 365-064 (Jewell Instruments Llc), M-3197 (Metermaster Inc Miscorp Div), 10870 (E I L Instruments Inc), MK777-93 (Mkc Electronics Inc Dba Mk Electronics Div Mkc Electronics Inc, Dba Mk Electronics), 00000-4757 (Harsco Corp Bmy-Combat Systems Div) and 3 more.

What NSN replaces 6625-00-006-0604?

There are 8 known substitutes for 6625-00-006-0604: 5950-00-438-3390, 4810-00-692-3669, 5950-00-824-3859 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 65A81C134?

Key specifications for 65A81C134: Special Test Features: CONFORMS TO MIL-M-10304/14; Mounting Bolt Circle Diameter: 3.160 INCHES NOMINAL IN; Frequency Rating: 400.0 HERTZ NOMINAL; Measurement Range: +390.0 TO 410.0 HERTZ SINGLE INDICATOR SINGLE RANGE. 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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