PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

23571Wattmeter

Telephonics Corp/prd Instruments · NSN 6625-00-539-9721 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-539-9721 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-539-9721. Primary manufacturer part number: 23571.
Features
  • Wattmeter — FSC 6625
  • Circuit Current for Which Designed: DC
  • Color: UNABLE TO DECODE
  • Style Designator: ROUND FLUSH MTG
  • Accuracy in Percent: -5.000 TO 5.000 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
  • Installation Design: PANEL
  • Overall Diameter: 3.500 INCHES NOMINAL IN
  • Circuit Attachment Method and Quantity: 2 SOLDER LUG
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Wattmeter, cataloged under National Stock Number 6625-00-539-9721, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Telephonics Corp/prd Instruments. Government technical data includes 26 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-00-539-9721
Primary Part Number23571
Item NameWattmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerTelephonics Corp/prd Instruments
StatusACTIVE
Circuit Current for Which DesignedDC
ColorUNABLE TO DECODE
Style DesignatorROUND FLUSH MTG
Accuracy in Percent-5.000 TO 5.000 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Installation DesignPANEL
Overall Diameter3.500 INCHES NOMINAL IN
Circuit Attachment Method and Quantity2 SOLDER LUG
Meter Body Diameter Behind Mounting Flange2.760 INCHES NOMINAL IN
Mounting Facility Type and Quantity1 FLANGE
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Scale Division Quantity25 SINGLE INDICATOR SINGLE RANGE
Meter Depth Behind Mounting Flange1.380 INCHES NOMINAL IN
Operating Voltage Rating in Volts0.004 DC NOMINAL
Circuit Current for Which DesignedDC
ColorUNABLE TO DECODE
Style DesignatorROUND FLUSH MTG
Accuracy in Percent-5.000 TO 5.000 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Installation DesignPANEL
Overall Diameter3.500 INCHES NOMINAL IN
Circuit Attachment Method and Quantity2 SOLDER LUG
Meter Body Diameter Behind Mounting Flange2.760 INCHES NOMINAL IN
Mounting Facility Type and Quantity1 FLANGE
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Scale Division Quantity25 SINGLE INDICATOR SINGLE RANGE
Meter Depth Behind Mounting Flange1.380 INCHES NOMINAL IN
Operating Voltage Rating in Volts0.004 DC NOMINAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeJN
Verified Substitutes 6
Voltmeter
2920-00-105-27151113611 INTERCHANGEABLE
Starter,engine,electrical
Borgwarner Pds (anderson), L.l.c.
5970-00-525-83261206381-001 INTERCHANGEABLE
Insulator,disk
Lockheed Martin Corporation Div Rms
5342-01-015-8498 INTERCHANGEABLE
Bracket,end Mounting
5130-01-045-5858 INTERCHANGEABLE
Brush,fiber,rotary End
2540-01-151-4516158-OMC-81R INTERCHANGEABLE
Mirror Assembly,rearview
Curt Manufacturing Llc
Cross-Reference Index
Part NumberManufacturer
23571 Peraton Inc (USA)
23571 PRIMARY Telephonics Corp/prd Instruments (USA)
Related Parts
6625-00-232-1116SUCCESSOR
VOLTMETER
2920-00-105-2715INTERCHANGEABLE
STARTER,ENGINE,ELECTRICAL
1113611
5970-00-525-8326INTERCHANGEABLE
INSULATOR,DISK
1206381-001
5342-01-015-8498INTERCHANGEABLE
BRACKET,END MOUNTING
5130-01-045-5858INTERCHANGEABLE
BRUSH,FIBER,ROTARY END
2540-01-151-4516INTERCHANGEABLE
MIRROR ASSEMBLY,REARVIEW
158-OMC-81R

Frequently Asked Questions

What is NSN 6625-00-539-9721?

NSN 6625-00-539-9721 is a Wattmeter, manufactured by Telephonics Corp/prd Instruments, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-00-539-9721?

NSN 6625-00-539-9721 has 2 cross-referenced part numbers: 23571 (Peraton Inc), 23571 (Telephonics Corp/prd Instruments).

What NSN replaces 6625-00-539-9721?

There are 6 known substitutes for 6625-00-539-9721: 6625-00-232-1116, 2920-00-105-2715, 5970-00-525-8326 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 23571?

Key specifications for 23571: Circuit Current for Which Designed: DC; Color: UNABLE TO DECODE; Style Designator: ROUND FLUSH MTG; Accuracy in Percent: -5.000 TO 5.000 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE. 28 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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