PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

HM3-31-2Meter,arbitrary Scale

Jewell Instruments Llc · NSN 6625-00-545-7937 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-545-7937 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-545-7937. Primary manufacturer part number: HM3-31-2.
Features
  • Meter,arbitrary Scale — FSC 6625
  • Installation Design: PANEL
  • Special Markings: GOOD AND BAD
  • Style Designator: ROUND FLUSH MTG
  • Sensitivity Rating: 1.0 MILLIAMPERES
  • Mounting Facility Type and Quantity: 3 FLANGE
  • Circuit Current for Which Designed: DC
  • Overall Diameter: 3.500 INCHES NOMINAL IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Meter,arbitrary Scale, cataloged under National Stock Number 6625-00-545-7937, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Jewell Instruments Llc. Government technical data includes 27 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6625-00-545-7937
Primary Part NumberHM3-31-2
Item NameMeter,arbitrary Scale
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerJewell Instruments Llc
StatusACTIVE
Installation DesignPANEL
Special MarkingsGOOD AND BAD
Style DesignatorROUND FLUSH MTG
Sensitivity Rating1.0 MILLIAMPERES
Mounting Facility Type and Quantity3 FLANGE
Circuit Current for Which DesignedDC
Overall Diameter3.500 INCHES NOMINAL IN
ColorUNABLE TO DECODE
Features ProvidedMAGNETIC SHIELD
Meter Body Diameter Behind Mounting Flange2.675 INCHES NOMINAL IN
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Mounting Bolt Circle Diameter3.160 INCHES NOMINAL IN
Meter Depth Behind Mounting Flange1.062 INCHES NOMINAL IN
Mounting Hole Diameter0.150 INCHES NOMINAL IN
Circuit Attachment Method and Quantity2 SOLDERLESS LUG
Dial Scale Marking ColorBLACK ALL INDICATORS SINGLE RANGE
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE ALL INDICATORS SINGLE RANGE
Installation DesignPANEL
Special MarkingsGOOD AND BAD
Style DesignatorROUND FLUSH MTG
Sensitivity Rating1.0 MILLIAMPERES
Mounting Facility Type and Quantity3 FLANGE
Circuit Current for Which DesignedDC
Overall Diameter3.500 INCHES NOMINAL IN
ColorUNABLE TO DECODE
Features ProvidedMAGNETIC SHIELD
Meter Body Diameter Behind Mounting Flange2.675 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
6625-00-186-8284 INTERCHANGEABLE
Ammeter
6625-00-196-6578 INTERCHANGEABLE
Ammeter
6625-00-649-4560 INTERCHANGEABLE
Voltmeter
Cross-Reference Index
Part NumberManufacturer
HM3-31-2 PRIMARY Jewell Instruments Llc (USA)
Related Parts
6625-00-186-8284INTERCHANGEABLE
AMMETER
6625-00-196-6578INTERCHANGEABLE
AMMETER
6625-00-649-4560INTERCHANGEABLE
VOLTMETER

Frequently Asked Questions

What is NSN 6625-00-545-7937?

NSN 6625-00-545-7937 is a Meter,arbitrary Scale, manufactured by Jewell Instruments Llc, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-00-545-7937?

NSN 6625-00-545-7937 has 1 cross-referenced part number: HM3-31-2 (Jewell Instruments Llc).

What NSN replaces 6625-00-545-7937?

There are 3 known substitutes for 6625-00-545-7937: 6625-00-186-8284, 6625-00-196-6578, 6625-00-649-4560. Verify interchangeability with system specifications before substitution.

What are the specifications of HM3-31-2?

Key specifications for HM3-31-2: Installation Design: PANEL; Special Markings: GOOD AND BAD; Style Designator: ROUND FLUSH MTG; Sensitivity Rating: 1.0 MILLIAMPERES. 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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