PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MM8409-9Ammeter

Metermaster Inc · NSN 6625-01-272-0873 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-01-272-0873 — this item is cataloged by the U.S. Government under National Stock Number 6625-01-272-0873. Primary manufacturer part number: MM8409-9.
Features
  • Ammeter — FSC 6625
  • 3 verified cross-references
  • Primary manufacturer: Metermaster Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Ammeter, cataloged under National Stock Number 6625-01-272-0873, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Metermaster Inc. This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Catalog Facts
Item NameAmmeter
FSC / FSG6625 — No Item Name Available (FSG 66)
ManufacturersMetermaster Inc (CAGE 25497); Mkc Electronics Inc Dba Mk Electronics Div Mkc Electronics Inc, Dba Mk Electronics (CAGE 0BZM1); Phaostron Instrument and Electronic Company (CAGE 77221)
Successor NSN6625-00-087-8257 — Ammeter
Technical Specifications
ParameterValue
NSN6625-01-272-0873
Primary Part NumberMM8409-9
Item NameAmmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerMetermaster Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeJN
Verified Substitutes 5
6625-00-087-8257ME421U SUCCESSOR
Ammeter
Joint Electronics Type Designation System
Test Set,cathode Ray Tube
6625-01-075-9209SM-C-889062 INTERCHANGEABLE
Ammeter
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
6625-01-077-2834633-18593 INTERCHANGEABLE
Voltmeter
Phaostron Instrument and Electronic Company
6625-01-271-9855 INTERCHANGEABLE
Voltmeter
Cross-Reference Index
Part NumberManufacturer
MM8409-9 Metermaster Inc (USA)
MK777-10 Mkc Electronics Inc Dba Mk Electronics Div Mkc Electronics Inc, Dba Mk Electronics (USA)
633 Phaostron Instrument and Electronic Company (USA)
Related Parts
6625-00-087-8257SUCCESSOR
AMMETER
ME421U
6625-00-111-7704SUCCESSOR
TEST SET,CATHODE RAY TUBE
6625-01-075-9209INTERCHANGEABLE
AMMETER
SM-C-889062
6625-01-077-2834INTERCHANGEABLE
VOLTMETER
633-18593
6625-01-271-9855INTERCHANGEABLE
VOLTMETER

Frequently Asked Questions

What is NSN 6625-01-272-0873?

NSN 6625-01-272-0873 is a Ammeter, manufactured by Metermaster Inc, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-01-272-0873?

NSN 6625-01-272-0873 has 3 cross-referenced part numbers: MM8409-9 (Metermaster Inc), MK777-10 (Mkc Electronics Inc Dba Mk Electronics Div Mkc Electronics Inc, Dba Mk Electronics), 633 (Phaostron Instrument and Electronic Company).

What NSN replaces 6625-01-272-0873?

There are 5 known substitutes for 6625-01-272-0873: 6625-00-087-8257, 6625-00-111-7704, 6625-01-075-9209 and 2 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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