PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

320AVoltmeter

Ballantine Laboratories Inc · NSN 6625-00-726-6949 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-726-6949 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-726-6949. Primary manufacturer part number: 320A.
Features
  • Voltmeter — FSC 6625
  • Functional Classification: AA-1.1
  • Power Source: EXTERNAL
  • Installation Design: RACK
  • Scale Selection Method: SWITCH
  • Color: UNABLE TO DECODE
  • Features Provided: ZERO ADJUSTER
  • Surface Treatment: ENAMEL
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Voltmeter, cataloged under National Stock Number 6625-00-726-6949, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Ballantine Laboratories Inc. Government technical data includes 27 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-00-726-6949
Primary Part Number320A
Item NameVoltmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerBallantine Laboratories Inc
StatusCANCELLED
Functional ClassificationAA-1.1
Power SourceEXTERNAL
Installation DesignRACK
Scale Selection MethodSWITCH
ColorUNABLE TO DECODE
Features ProvidedZERO ADJUSTER
Surface TreatmentENAMEL
Movement TypeMOVING IRON VANE
Style DesignatorRECTANGULAR OR SQUARE
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR ALL RANGES
Entry Date78-09-01
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Frequency Rating50.000 HERTZ MINIMUM AND 420.000 HERTZ MAXIMUM
Indicator TypeDIAL W/POINTER
Furnished Items and QuantityBOOK,INSTRUCTION 1
Sensitivity Rating60.0 MICROAMPERES
Movement Suspension MethodMETAL PIVOT BASE
Functional DescriptionTRUE ROOT MEAN SQUARE VOLTMETER SUITABLE FOR ACCURATE MEASUREMENT OF A VARIETY OF WAVEFORMS ENCOUNTERED IN ACOUSTICAL,VIBRATIONAL,NOISE,PULSE,AND MAGNETIC MEASUREMENTS
Operating Voltage Rating in Volts105.0 AC MINIMUM AND 125.0 AC MAXIMUM
PhaseSINGLE
Functional ClassificationAA-1.1
Power SourceEXTERNAL
Installation DesignRACK
Scale Selection MethodSWITCH
ColorUNABLE TO DECODE
Features ProvidedZERO ADJUSTER
Surface TreatmentENAMEL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Shelf Life Code0
Criticality Code00
Unit of IssueEA
SMR CodeYM
Weight37.0000 lbs
Cube5.3390 cu ft
Verified Substitutes 10
No Item Name Available
Voltmeter
6240-00-155-7818 INTERCHANGEABLE
Lamp,incandescent
4710-00-162-34183-20A C INTERCHANGEABLE
Tube Assembly,metal
Brass Craft Mfg Co Sub of Masco Corp
4931-00-239-57137923205-2 INTERCHANGEABLE
Termination,sliding
Us Army Aviation and Missile Command
4030-00-264-7901320AN INTERCHANGEABLE
Hook,hoist
The Crosby Group Llc Dba the Crosby Group
5120-00-595-8389524MCR INTERCHANGEABLE
Jack,reel,hand
Yale Industrial Products, Inc. Div Duff Norton Company
5950-00-758-09561885022 INTERCHANGEABLE
Transformer,power
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
4030-00-959-1072L-320AN 1022424 INTERCHANGEABLE
Hook,hoist
The Crosby Group Llc Dba the Crosby Group
4030-01-033-28251022386 INTERCHANGEABLE
Hook,hoist
The Crosby Group Llc Dba the Crosby Group
Cross-Reference Index
Part NumberManufacturer
320A PRIMARY Ballantine Laboratories Inc (USA)
ME444U Joint Electronics Type Designation System (USA)
Related Parts
6625-00-078-4018SUCCESSOR
NO ITEM NAME AVAILABLE
6625-00-088-6672SUCCESSOR
VOLTMETER
6240-00-155-7818INTERCHANGEABLE
LAMP,INCANDESCENT
4710-00-162-3418INTERCHANGEABLE
TUBE ASSEMBLY,METAL
3-20A C
4931-00-239-5713INTERCHANGEABLE
TERMINATION,SLIDING
7923205-2
4030-00-264-7901INTERCHANGEABLE
HOOK,HOIST
320AN
5120-00-595-8389INTERCHANGEABLE
JACK,REEL,HAND
524MCR
5950-00-758-0956INTERCHANGEABLE
TRANSFORMER,POWER
1885022
4030-00-959-1072INTERCHANGEABLE
HOOK,HOIST
L-320AN 1022424
4030-01-033-2825INTERCHANGEABLE
HOOK,HOIST
1022386

Frequently Asked Questions

What is NSN 6625-00-726-6949?

NSN 6625-00-726-6949 is a Voltmeter, manufactured by Ballantine Laboratories Inc, classified under FSC 6625 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6625-00-726-6949?

NSN 6625-00-726-6949 has 2 cross-referenced part numbers: 320A (Ballantine Laboratories Inc), ME444U (Joint Electronics Type Designation System).

What NSN replaces 6625-00-726-6949?

There are 10 known substitutes for 6625-00-726-6949: 6625-00-078-4018, 6625-00-088-6672, 6240-00-155-7818 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 320A?

Key specifications for 320A: Functional Classification: AA-1.1; Power Source: EXTERNAL; Installation Design: RACK; Scale Selection Method: SWITCH. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6625-00-726-6949 still in active supply?

NSN 6625-00-726-6949 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.
PartsTable Design LLC · partstable.com