PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

858Ammeter

Sterling Mfg Co · NSN 6625-00-539-6955 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-539-6955 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-539-6955. Primary manufacturer part number: 858.
Features
  • Ammeter — FSC 6625
  • Panel for Which Designed: NONMAGNETIC
  • Dial Scale Marking Color: BLACK SINGLE INDICATOR SINGLE RANGE
  • Nuclear Hardness Critical Feature: NONHARDENED
  • Measurement Range: +0.0 TO 10.0 AMPERES, DC SINGLE INDICATOR SINGLE RANGE
  • Meter Depth Behind Mounting Flange: 0.562 INCHES NOMINAL IN
  • Style Designator: RECTANGULAR FLUSH MTG
  • Circuit Construction Type: NONELECTRONIC
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Ammeter, cataloged under National Stock Number 6625-00-539-6955, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Sterling Mfg Co. 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-00-539-6955
Primary Part Number858
Item NameAmmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerSterling Mfg Co
StatusACTIVE
Panel for Which DesignedNONMAGNETIC
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Nuclear Hardness Critical FeatureNONHARDENED
Measurement Range+0.0 TO 10.0 AMPERES, DC SINGLE INDICATOR SINGLE RANGE
Meter Depth Behind Mounting Flange0.562 INCHES NOMINAL IN
Style DesignatorRECTANGULAR FLUSH MTG
Circuit Construction TypeNONELECTRONIC
Movement TypeMOVING IRON VANE
Installation DesignPANEL
Meter Body Diameter Behind Mounting Flange2.000 INCHES NOMINAL IN
ColorUNABLE TO DECODE
Scale Division Quantity20 SINGLE INDICATOR SINGLE RANGE
Mounting Facility Type and Quantity1 BRACKET(S)
Circuit Attachment Method and Quantity2 THREADED STUD
Indicator TypeDIAL W/POINTER
Circuit Current for Which DesignedDC
Scale Selection MethodTERMINAL
Panel for Which DesignedNONMAGNETIC
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Nuclear Hardness Critical FeatureNONHARDENED
Measurement Range+0.0 TO 10.0 AMPERES, DC SINGLE INDICATOR SINGLE RANGE
Meter Depth Behind Mounting Flange0.562 INCHES NOMINAL IN
Style DesignatorRECTANGULAR FLUSH MTG
Circuit Construction TypeNONELECTRONIC
Movement TypeMOVING IRON VANE
Installation DesignPANEL
Meter Body Diameter Behind Mounting Flange2.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeG
Verified Substitutes 7
6740-00-128-8850CP2031 INTERCHANGEABLE
Rack,roll Film
Calumet Photographic, Inc.
5985-00-177-7202858 INTERCHANGEABLE
Waveguide Assembly
Waveline Inc
5940-00-178-0382858 INTERCHANGEABLE
Terminal Board
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
5960-00-189-5974 INTERCHANGEABLE
Electron Tube
5133-00-865-4225 INTERCHANGEABLE
Bit,spade,wood Boring
5365-00-900-6417858 INTERCHANGEABLE
Spacer
Eaton Corporation Div Eaton Fluid Power
7320-01-490-6771858 INTERCHANGEABLE
Rod,mesat Slicer
Globe Food Equipment Company
Cross-Reference Index
Part NumberManufacturer
858 PRIMARY Sterling Mfg Co (USA)
Related Parts
6740-00-128-8850INTERCHANGEABLE
RACK,ROLL FILM
CP2031
5985-00-177-7202INTERCHANGEABLE
WAVEGUIDE ASSEMBLY
858
5940-00-178-0382INTERCHANGEABLE
TERMINAL BOARD
858
5960-00-189-5974INTERCHANGEABLE
ELECTRON TUBE
5133-00-865-4225INTERCHANGEABLE
BIT,SPADE,WOOD BORING
5365-00-900-6417INTERCHANGEABLE
SPACER
858
7320-01-490-6771INTERCHANGEABLE
ROD,MESAT SLICER
858

Frequently Asked Questions

What is NSN 6625-00-539-6955?

NSN 6625-00-539-6955 is a Ammeter, manufactured by Sterling Mfg Co, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-00-539-6955?

NSN 6625-00-539-6955 has 1 cross-referenced part number: 858 (Sterling Mfg Co).

What NSN replaces 6625-00-539-6955?

There are 7 known substitutes for 6625-00-539-6955: 6740-00-128-8850, 5985-00-177-7202, 5940-00-178-0382 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 858?

Key specifications for 858: Panel for Which Designed: NONMAGNETIC; Dial Scale Marking Color: BLACK SINGLE INDICATOR SINGLE RANGE; Nuclear Hardness Critical Feature: NONHARDENED; Measurement Range: +0.0 TO 10.0 AMPERES, DC 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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