PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

HSIAmmeter

Jewell Instruments Llc · NSN 6625-00-771-5650 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-771-5650 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-771-5650. Primary manufacturer part number: HSI.
Features
  • Ammeter — FSC 6625
  • Scale Selection Method: TERMINAL
  • Reliability Indicator: NOT ESTABLISHED
  • Installation Design: PANEL
  • Meter Depth Behind Mounting Flange: 0.830 INCHES NOMINAL IN
  • Style Designator: RECTANGULAR FLUSH MTG
  • Scale Division Quantity: 5 SINGLE INDICATOR SINGLE RANGE
  • Color: UNABLE TO DECODE
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Ammeter, cataloged under National Stock Number 6625-00-771-5650, 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 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-00-771-5650
Primary Part NumberHSI
Item NameAmmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerJewell Instruments Llc
StatusACTIVE
Scale Selection MethodTERMINAL
Reliability IndicatorNOT ESTABLISHED
Installation DesignPANEL
Meter Depth Behind Mounting Flange0.830 INCHES NOMINAL IN
Style DesignatorRECTANGULAR FLUSH MTG
Scale Division Quantity5 SINGLE INDICATOR SINGLE RANGE
ColorUNABLE TO DECODE
Nuclear Hardness Critical FeatureNONHARDENED
Circuit Construction TypeNONELECTRONIC
Panel for Which DesignedNONMAGNETIC
FSC Application DataTEST SET,ELECT. EQUIP.
Indicator TypeDIAL W/POINTER
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Mounting Arrangement StyleFOUR HOLE/STUD RECTANGULAR/SQUARE
Center to Center Distance Between Mounting Facilities Parallel to Length1.312 INCHES NOMINAL IN
Pointer ColorBLACK SINGLE INDICATOR SINGLE RANGE
Scale Graduation TypeLINEAR SINGLE INDICATOR SINGLE RANGE
Meter Body Diameter Behind Mounting Flange1.500 INCHES NOMINAL IN
Center to Center Distance Between Mounting Facilities Parallel to Width1.312 INCHES NOMINAL IN
Measurement Range+0.0 TO 500.0 MILLIAMPERES, DC SINGLE INDICATOR SINGLE RANGE
Circuit Current for Which DesignedDC
Circuit Attachment Method and Quantity2 SOLDER STUD
Mounting Facility Type and Quantity4 FLANGE
Scale Selection MethodTERMINAL
Reliability IndicatorNOT ESTABLISHED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeY
Weight1.0000 lbs
Cube0.0683 cu ft
Verified Substitutes 4
1630-00-373-77071359-536817M INTERCHANGEABLE
Valve,transfer
Parker Hannifin Corporation Div Aerospace Group Headquarters
4820-01-410-885121105-850-1 INTERCHANGEABLE
Sleeve and Slide,directional Con
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
5962-01-444-1454211543 INTERCHANGEABLE
Microcircuit,memory
Northrop Grumman Systems Corporation
5965-01-495-11708X221AA INTERCHANGEABLE
Headset,electrical
Plantronics Inc.
Cross-Reference Index
Part NumberManufacturer
HSI PRIMARY Jewell Instruments Llc (USA)
211543 Northrop Grumman Systems Corp Dba Northrop Grumman Systems Corp (USA)
Related Parts
1630-00-373-7707INTERCHANGEABLE
VALVE,TRANSFER
1359-536817M
4820-01-410-8851INTERCHANGEABLE
SLEEVE AND SLIDE,DIRECTIONAL CON
21105-850-1
5962-01-444-1454INTERCHANGEABLE
MICROCIRCUIT,MEMORY
211543
5965-01-495-1170INTERCHANGEABLE
HEADSET,ELECTRICAL
8X221AA

Frequently Asked Questions

What is NSN 6625-00-771-5650?

NSN 6625-00-771-5650 is a Ammeter, manufactured by Jewell Instruments Llc, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-00-771-5650?

NSN 6625-00-771-5650 has 2 cross-referenced part numbers: HSI (Jewell Instruments Llc), 211543 (Northrop Grumman Systems Corp Dba Northrop Grumman Systems Corp).

What NSN replaces 6625-00-771-5650?

There are 4 known substitutes for 6625-00-771-5650: 1630-00-373-7707, 4820-01-410-8851, 5962-01-444-1454 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of HSI?

Key specifications for HSI: Overall Length: 0.980 INCHES NOMINAL IN; Scale Selection Method: TERMINAL; Reliability Indicator: NOT ESTABLISHED; Installation Design: PANEL. 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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