PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS16972-2Meter,time Totalizing

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 6645-01-280-2674 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-01-280-2674 — this item is cataloged by the U.S. Government under National Stock Number 6645-01-280-2674. Primary manufacturer part number: MS16972-2.
Features
  • Meter,time Totalizing — FSC 6645
  • Movement Type: ELECTRICAL
  • Voltage Rating: 115.0 VOLTS MINIMUM AND 128.0 VOLTS MAXIMUM
  • Hermetic Protection: PROVIDED
  • Operating Frequency: 400.0 HERTZ NOMINAL
  • Body Diameter: 2.625 INCHES MAXIMUM IN
  • Reset Feature: NOT PROVIDED
  • Body Length: 3.000 INCHES MAXIMUM IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Meter,time Totalizing, cataloged under National Stock Number 6645-01-280-2674, 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 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6645-01-280-2674
Primary Part NumberMS16972-2
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
Movement TypeELECTRICAL
Voltage Rating115.0 VOLTS MINIMUM AND 128.0 VOLTS MAXIMUM
Hermetic ProtectionPROVIDED
Operating Frequency400.0 HERTZ NOMINAL
Body Diameter2.625 INCHES MAXIMUM IN
Reset FeatureNOT PROVIDED
Body Length3.000 INCHES MAXIMUM IN
Mounting TypePANEL
Indicator TypeDIGITAL COUNTER
Current TypeAC
Unit TypeMOUNTED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
3110-00-100-6149 INTERCHANGEABLE
Ball,bearing
6680-00-178-0095700019 INTERCHANGEABLE
Cartridge Assembly
Simmonds Precision Products Inc
4820-00-867-1707700019 INTERCHANGEABLE
Valve,stop-Check
Parker-Hannifin Corporation Div Hydraulic Accumulator Division
5999-00-882-6992 INTERCHANGEABLE
Contact,electrical
6645-00-940-0759 INTERCHANGEABLE
Meter,time Totalizing
5340-01-049-6053H9946-LS-2/CE/ INTERCHANGEABLE
Handle,bail
Nielsen Hardware Corporation
6210-01-065-5445951033-3 INTERCHANGEABLE
Indicator,light
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
6685-01-225-64560871011000 INTERCHANGEABLE
Gage,pressure,dial Indicating
Parker-Hannifin Corporation Div Hydraulic Accumulator Division
6625-01-229-7002 INTERCHANGEABLE
Meter,arbitrary Scale
5815-01-385-719370-0019 INTERCHANGEABLE
Keyboard-Transmitter,teletypewri
Cortron, Inc. Dba Cortron Inc
Cross-Reference Index
Part NumberManufacturer
MS16972-2 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MIL-M-3971/2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
700019 Meggitt North Hollywood Inc (USA)
M3971/2-8 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
3110-00-100-6149INTERCHANGEABLE
BALL,BEARING
6680-00-178-0095INTERCHANGEABLE
CARTRIDGE ASSEMBLY
700019
4820-00-867-1707INTERCHANGEABLE
VALVE,STOP-CHECK
700019
5999-00-882-6992INTERCHANGEABLE
CONTACT,ELECTRICAL
6645-00-940-0759INTERCHANGEABLE
METER,TIME TOTALIZING
5340-01-049-6053INTERCHANGEABLE
HANDLE,BAIL
H9946-LS-2/CE/
6210-01-065-5445INTERCHANGEABLE
INDICATOR,LIGHT
951033-3
6685-01-225-6456INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
0871011000
6625-01-229-7002INTERCHANGEABLE
METER,ARBITRARY SCALE
5815-01-385-7193INTERCHANGEABLE
KEYBOARD-TRANSMITTER,TELETYPEWRI
70-0019

Frequently Asked Questions

What is NSN 6645-01-280-2674?

NSN 6645-01-280-2674 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 6645-01-280-2674?

NSN 6645-01-280-2674 has 4 cross-referenced part numbers: MS16972-2 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MIL-M-3971/2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 700019 (Meggitt North Hollywood Inc), M3971/2-8 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 6645-01-280-2674?

There are 10 known substitutes for 6645-01-280-2674: 3110-00-100-6149, 6680-00-178-0095, 4820-00-867-1707 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS16972-2?

Key specifications for MS16972-2: Movement Type: ELECTRICAL; Voltage Rating: 115.0 VOLTS MINIMUM AND 128.0 VOLTS MAXIMUM; Hermetic Protection: PROVIDED; Operating Frequency: 400.0 HERTZ NOMINAL. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6645-01-280-2674 still in active supply?

NSN 6645-01-280-2674 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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