PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

400728Meter,time Totalizing

Ail Systems Inc Sub of Eaton Corp · NSN 6645-00-522-4173 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-00-522-4173 — this item is cataloged by the U.S. Government under National Stock Number 6645-00-522-4173. Primary manufacturer part number: 400728.
Features
  • Meter,time Totalizing — FSC 6645
  • Body Diameter: 1.530 INCHES NOMINAL IN
  • Mounting Type: PANEL
  • Terminal Type: SOLDER LUG
  • Mounting Configuration: FOUR 0.140 IN. DIA MTG HOLES ON 1.312 IN. BY 1.312 IN. MTG CENTERS IN
  • Reference Number Differentiating Characteristics: NAVORD OD41152
  • Movement Type: ELECTRICAL
  • Body Depth: 2.453 INCHES NOMINAL IN
Applications
  • Applications requiring Aluminum or Steel Case construction
General Description

The Meter,time Totalizing, cataloged under National Stock Number 6645-00-522-4173, is classified within Federal Supply Class 6645 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Ail Systems Inc Sub of Eaton Corp. Government technical data includes 25 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6645-00-522-4173
Primary Part Number400728
Item NameMeter,time Totalizing
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerAil Systems Inc Sub of Eaton Corp
StatusACTIVE
Body Diameter1.530 INCHES NOMINAL IN
Mounting TypePANEL
Terminal TypeSOLDER LUG
Mounting ConfigurationFOUR 0.140 IN. DIA MTG HOLES ON 1.312 IN. BY 1.312 IN. MTG CENTERS IN
Reference Number Differentiating CharacteristicsNAVORD OD41152
Movement TypeELECTRICAL
Body Depth2.453 INCHES NOMINAL IN
Maximum Measurement9999.90
Reset FeatureNOT PROVIDED
Indicator TypeDRUM REGISTER
Marking ColorBLACK NUMERALS FOR HOURS,RED NUMERALS FOR TENTHS
Hermetic ProtectionPROVIDED
Electrical Movement TypeSYNCHRONOUS MOTOR
MaterialALUMINUM OR STEEL CASE
Background ColorMETALLIC
Voltage Rating115.0 VOLTS NOMINAL
Smallest Increment Indicated0.10
Measurement UnitHOURS
Operating Frequency60.0 HERTZ NOMINAL
Unit TypeMOUNTED
Mounting MethodFLUSH
Flange Height1.750 INCHES NOMINAL IN
Current TypeAC
Terminal Quantity2
Mounting Flange Width1.750 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
6625-00-093-81897705 INTERCHANGEABLE
Ohmmeter
Avo Intl
7510-01-064-9402400728 INTERCHANGEABLE
Typing Element
Telemechanics Inc
4320-01-274-5324400728 INTERCHANGEABLE
Subassembly,cover
Eaton Aerospace, Llc Dba Jackson South
Cross-Reference Index
Part NumberManufacturer
400728 Ail Systems Inc Sub of Eaton Corp (USA)
Related Parts
6625-00-093-8189INTERCHANGEABLE
OHMMETER
7705
7510-01-064-9402INTERCHANGEABLE
TYPING ELEMENT
400728
4320-01-274-5324INTERCHANGEABLE
SUBASSEMBLY,COVER
400728

Frequently Asked Questions

What is NSN 6645-00-522-4173?

NSN 6645-00-522-4173 is a Meter,time Totalizing, manufactured by Ail Systems Inc Sub of Eaton Corp, classified under FSC 6645 (No Item Name Available). Status: active.

What are the part numbers for NSN 6645-00-522-4173?

NSN 6645-00-522-4173 has 1 cross-referenced part number: 400728 (Ail Systems Inc Sub of Eaton Corp).

What NSN replaces 6645-00-522-4173?

There are 3 known substitutes for 6645-00-522-4173: 6625-00-093-8189, 7510-01-064-9402, 4320-01-274-5324. Verify interchangeability with system specifications before substitution.

What are the specifications of 400728?

Key specifications for 400728: Body Diameter: 1.530 INCHES NOMINAL IN; Mounting Type: PANEL; Terminal Type: SOLDER LUG; Mounting Configuration: FOUR 0.140 IN. DIA MTG HOLES ON 1.312 IN. BY 1.312 IN. MTG CENTERS IN. 25 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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