PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

720691-25Ammeter

Lockheed Martin Corporation Div Rms - Mitchel Field · NSN 6625-00-649-3277 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-649-3277 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-649-3277. Primary manufacturer part number: 720691-25.
Features
  • Ammeter — FSC 6625
  • Meter Body Diameter Behind Mounting Flange: 2.800 INCHES NOMINAL IN
  • Accuracy in Percent: -2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
  • Style Designator: ROUND FLUSH MTG
  • Material: PLASTIC
  • Installation Design: PANEL
  • Color: UNABLE TO DECODE
  • Mounting Arrangement Style: THREE HOLE/STUD BOLT CIRCLE
Applications
  • Applications requiring Plastic construction
General Description

The Ammeter, cataloged under National Stock Number 6625-00-649-3277, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Lockheed Martin Corporation Div Rms - Mitchel Field. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6625-00-649-3277
Primary Part Number720691-25
Item NameAmmeter
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerLockheed Martin Corporation Div Rms - Mitchel Field
StatusCANCELLED
Meter Body Diameter Behind Mounting Flange2.800 INCHES NOMINAL IN
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Style DesignatorROUND FLUSH MTG
MaterialPLASTIC
Installation DesignPANEL
ColorUNABLE TO DECODE
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Mounting Bolt Circle Diameter1.580 INCHES NOMINAL IN
Scale Selection MethodTERMINAL
Mounting Facility Type and Quantity3 FLANGE
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Overall Diameter3.500 INCHES NOMINAL IN
Circuit Current for Which DesignedDC
Circuit Attachment Method and Quantity2 BINDING POST
Sensitivity Rating150.0 MILLIVOLTS
Measurement Range+0.0 TO 200.0 MILLIAMPERES, DC SINGLE INDICATOR SINGLE RANGE
Meter Body Diameter Behind Mounting Flange2.800 INCHES NOMINAL IN
Accuracy in Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Style DesignatorROUND FLUSH MTG
MaterialPLASTIC
Installation DesignPANEL
ColorUNABLE TO DECODE
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Mounting Bolt Circle Diameter1.580 INCHES NOMINAL IN
Scale Selection MethodTERMINAL
Mounting Facility Type and Quantity3 FLANGE
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Overall Diameter3.500 INCHES NOMINAL IN
Circuit Current for Which DesignedDC
Circuit Attachment Method and Quantity2 BINDING POST
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
Ammeter
Ammeter
Ammeter
Ammeter
Ammeter
Ammeter
Ammeter
6625-00-684-812162207-001 SUCCESSOR
Ammeter
Dynalec Corporation
Ammeter
Ammeter
Cross-Reference Index
Part NumberManufacturer
720691-25 PRIMARY Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
MILM10304 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MR35W200DCMA Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILM6A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MR36W200DCMAR Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
6625-00-069-3031SUCCESSOR
AMMETER
6625-00-535-4594SUCCESSOR
AMMETER
6625-00-555-3092SUCCESSOR
AMMETER
6625-00-643-3502SUCCESSOR
AMMETER
6625-00-648-7562SUCCESSOR
AMMETER
6625-00-668-7813SUCCESSOR
AMMETER
6625-00-683-9592SUCCESSOR
AMMETER
6625-00-684-8121SUCCESSOR
AMMETER
62207-001
6625-00-720-3253SUCCESSOR
AMMETER
6625-00-720-3254SUCCESSOR
AMMETER
6625-00-730-7278SUCCESSOR
VOLTMETER
6625-00-818-9090SUCCESSOR
VOLTMETER

Frequently Asked Questions

What is NSN 6625-00-649-3277?

NSN 6625-00-649-3277 is a Ammeter, manufactured by Lockheed Martin Corporation Div Rms - Mitchel Field, classified under FSC 6625 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6625-00-649-3277?

NSN 6625-00-649-3277 has 5 cross-referenced part numbers: 720691-25 (Lockheed Martin Corporation Div Rms - Mitchel Field), MILM10304 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MR35W200DCMA (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILM6A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MR36W200DCMAR (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 6625-00-649-3277?

There are 12 known substitutes for 6625-00-649-3277: 6625-00-069-3031, 6625-00-535-4594, 6625-00-555-3092 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 720691-25?

Key specifications for 720691-25: Meter Body Diameter Behind Mounting Flange: 2.800 INCHES NOMINAL IN; Accuracy in Percent: -2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE; Style Designator: ROUND FLUSH MTG; Material: PLASTIC. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6625-00-649-3277 still in active supply?

NSN 6625-00-649-3277 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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