PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS17322-6Meter,time Totalizing

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 6645-00-988-4426 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-00-988-4426 — this item is cataloged by the U.S. Government under National Stock Number 6645-00-988-4426. Primary manufacturer part number: MS17322-6.
Features
  • Meter,time Totalizing — FSC 6645
  • Electrical Movement Type: SYNCHRONOUS MOTOR
  • Operating Frequency: 380.0 HERTZ MINIMUM AND 420.0 HERTZ MAXIMUM
  • Voltage Rating: 115.0 VOLTS MINIMUM AND 120.0 VOLTS MAXIMUM
  • Mounting Method: SEMIFLUSH
  • Marking Color: WHITE NUMERALS
  • Body Depth: 0.914 INCHES NOMINAL IN
  • Hermetic Protection: PROVIDED
Applications
  • Applications requiring Aluminum or Steel Case construction
General Description

The Meter,time Totalizing, cataloged under National Stock Number 6645-00-988-4426, is classified within Federal Supply Class 6645 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 25 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6645-00-988-4426
Primary Part NumberMS17322-6
Item NameMeter,time Totalizing
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Electrical Movement TypeSYNCHRONOUS MOTOR
Operating Frequency380.0 HERTZ MINIMUM AND 420.0 HERTZ MAXIMUM
Voltage Rating115.0 VOLTS MINIMUM AND 120.0 VOLTS MAXIMUM
Mounting MethodSEMIFLUSH
Marking ColorWHITE NUMERALS
Body Depth0.914 INCHES NOMINAL IN
Hermetic ProtectionPROVIDED
Mounting ConfigurationTWO 0.125 IN. DIA MTG HOLES SPACED 1.000 IN. C TO C IN
Background ColorBLACK
Maximum Measurement9999.00
Flange Height0.938 INCHES NOMINAL IN
Unit TypeMOUNTED
Reset FeatureNOT PROVIDED
Measurement UnitHOURS
Smallest Increment Indicated1.00
Movement TypeELECTRICAL
Indicator TypeDRUM REGISTER
MaterialALUMINUM OR STEEL CASE
Body Width0.500 INCHES NOMINAL IN
Terminal TypeSOLDER LUG
Mounting TypePANEL
Current TypeAC
Mounting Flange Width1.313 INCHES NOMINAL IN
Body Length0.500 INCHES NOMINAL IN
Terminal Quantity2
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
6645-00-255-1372 INTERCHANGEABLE
Meter,time Totalizing
Cross-Reference Index
Part NumberManufacturer
MS17322-6 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
7902614-01 Lockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan (USA)
352250010412 Thales Nederland (NLD)
Related Parts
6645-00-255-1372INTERCHANGEABLE
METER,TIME TOTALIZING

Frequently Asked Questions

What is NSN 6645-00-988-4426?

NSN 6645-00-988-4426 is a Meter,time Totalizing, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 6645 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6645-00-988-4426?

NSN 6645-00-988-4426 has 3 cross-referenced part numbers: MS17322-6 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 7902614-01 (Lockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan), 352250010412 (Thales Nederland).

What NSN replaces 6645-00-988-4426?

There is 1 known substitute for 6645-00-988-4426: 6645-00-255-1372. Verify interchangeability with system specifications before substitution.

What are the specifications of MS17322-6?

Key specifications for MS17322-6: Electrical Movement Type: SYNCHRONOUS MOTOR; Operating Frequency: 380.0 HERTZ MINIMUM AND 420.0 HERTZ MAXIMUM; Voltage Rating: 115.0 VOLTS MINIMUM AND 120.0 VOLTS MAXIMUM; Mounting Method: SEMIFLUSH. 25 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6645-00-988-4426 still in active supply?

NSN 6645-00-988-4426 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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