PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MSB401Shunt,instrument

Ram Meter Inc · NSN 6625-00-500-8890 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-500-8890 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-500-8890. Primary manufacturer part number: MSB401.
Features
  • Shunt,instrument — FSC 6625
  • Mounting Method: UNTHREADED HOLE(S)
  • Voltage Drop in Millivolts: 50.0 NOMINAL
  • Terminal Location: END
  • Terminal Type and Quantity: 2 SCREW
  • Current Rating and Type: 400.0 AMPERES NOMINAL AC
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 1.250 INCHES NOMINAL IN
  • Unthreaded Mounting Hole Diameter: 0.205 INCHES NOMINAL IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Shunt,instrument, cataloged under National Stock Number 6625-00-500-8890, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Ram Meter Inc. Government technical data includes 18 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-00-500-8890
Primary Part NumberMSB401
Item NameShunt,instrument
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerRam Meter Inc
StatusACTIVE
Mounting MethodUNTHREADED HOLE(S)
Voltage Drop in Millivolts50.0 NOMINAL
Terminal LocationEND
Terminal Type and Quantity2 SCREW
Current Rating and Type400.0 AMPERES NOMINAL AC
Center to Center Distance Between Mounting Facilities Parallel to Length1.250 INCHES NOMINAL IN
Unthreaded Mounting Hole Diameter0.205 INCHES NOMINAL IN
Usage DesignEXTERNAL
Mounting Provision Quantity2
Mounting MethodUNTHREADED HOLE(S)
Voltage Drop in Millivolts50.0 NOMINAL
Terminal LocationEND
Terminal Type and Quantity2 SCREW
Current Rating and Type400.0 AMPERES NOMINAL AC
Center to Center Distance Between Mounting Facilities Parallel to Length1.250 INCHES NOMINAL IN
Unthreaded Mounting Hole Diameter0.205 INCHES NOMINAL IN
Usage DesignEXTERNAL
Mounting Provision Quantity2
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeY
Verified Substitutes 1
Shunt,instrument
Cross-Reference Index
Part NumberManufacturer
MSB401 PRIMARY Ram Meter Inc (USA)
L01592 Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA)
Related Parts
6625-00-720-2854SUCCESSOR
SHUNT,INSTRUMENT

Frequently Asked Questions

What is NSN 6625-00-500-8890?

NSN 6625-00-500-8890 is a Shunt,instrument, manufactured by Ram Meter Inc, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-00-500-8890?

NSN 6625-00-500-8890 has 2 cross-referenced part numbers: MSB401 (Ram Meter Inc), L01592 (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)).

What NSN replaces 6625-00-500-8890?

There is 1 known substitute for 6625-00-500-8890: 6625-00-720-2854. Verify interchangeability with system specifications before substitution.

What are the specifications of MSB401?

Key specifications for MSB401: Overall Width: 1.750 INCHES NOMINAL IN; Mounting Method: UNTHREADED HOLE(S); Voltage Drop in Millivolts: 50.0 NOMINAL; Terminal Location: END. 24 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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