PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AA59400-3BMeter,time Totalizing

Federal Commercial Item Description Promulgated by General Services Administration Washington DC · NSN 6645-01-265-8708 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-01-265-8708 — this item is cataloged by the U.S. Government under National Stock Number 6645-01-265-8708. Primary manufacturer part number: AA59400-3B.
Features
  • Meter,time Totalizing — FSC 6645
  • Terminal Type: HOOK
  • Mounting Type: FLANGE
  • Background Color: BLACK BACKGROUND
  • Indicator Type: DRUM REGISTER
  • Mounting Method: SEMIFLUSH
  • Flange Height: 0.870 INCHES NOMINAL IN
  • Marking Color: WHITE MARKINGS
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Meter,time Totalizing, cataloged under National Stock Number 6645-01-265-8708, is classified within Federal Supply Class 6645 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Federal Commercial Item Description Promulgated by General Services Administration Washington DC. Government technical data includes 20 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. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6645-01-265-8708
Primary Part NumberAA59400-3B
Item NameMeter,time Totalizing
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerFederal Commercial Item Description Promulgated by General Services Administration Washington DC
StatusACTIVE
Terminal TypeHOOK
Mounting TypeFLANGE
Background ColorBLACK BACKGROUND
Indicator TypeDRUM REGISTER
Mounting MethodSEMIFLUSH
Flange Height0.870 INCHES NOMINAL IN
Marking ColorWHITE MARKINGS
Measurement UnitHOURS
Electrical Movement TypeSYNCHRONOUS MOTOR
Unit TypeMOUNTED
Reset FeatureNOT PROVIDED
Smallest Increment Indicated1.00
Hermetic ProtectionPROVIDED
Voltage Rating28.0 VOLTS NOMINAL
Movement TypeELECTRICAL
Maximum Measurement9999.00
Body Length2.062 INCHES MAXIMUM IN
Mounting Flange Width1.310 INCHES NOMINAL IN
Terminal Quantity2
Current TypeDC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
6635-00-182-7534L20 INTERCHANGEABLE
Tester,spring Resiliency
Ametek Inc
6645-00-255-1369 INTERCHANGEABLE
Meter,time Totalizing
6635-00-545-8500 INTERCHANGEABLE
Tester,spring Resiliency
6635-00-557-3237D150M INTERCHANGEABLE
Tester,spring Resiliency
Ametek, Inc. Div Aerospace & Defense
6635-00-578-5286 INTERCHANGEABLE
Tester,spring Resiliency
6635-00-705-5469 INTERCHANGEABLE
Tester,spring Resiliency
6635-00-730-8603 INTERCHANGEABLE
Tester,spring Resiliency
6635-00-790-0733 INTERCHANGEABLE
Tester,spring Resiliency
6645-01-208-1731 INTERCHANGEABLE
Meter,time Totalizing
6645-01-356-2271 INTERCHANGEABLE
Meter,time Totalizing
Cross-Reference Index
Part NumberManufacturer
AA59400-3B Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
A-A-59400 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
MIL-M-7793/1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS21341B-07 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
6635-00-182-7534INTERCHANGEABLE
TESTER,SPRING RESILIENCY
L20
6645-00-255-1369INTERCHANGEABLE
METER,TIME TOTALIZING
6635-00-545-8500INTERCHANGEABLE
TESTER,SPRING RESILIENCY
6635-00-557-3237INTERCHANGEABLE
TESTER,SPRING RESILIENCY
D150M
6635-00-578-5286INTERCHANGEABLE
TESTER,SPRING RESILIENCY
6635-00-705-5469INTERCHANGEABLE
TESTER,SPRING RESILIENCY
6635-00-730-8603INTERCHANGEABLE
TESTER,SPRING RESILIENCY
6635-00-790-0733INTERCHANGEABLE
TESTER,SPRING RESILIENCY
6645-01-208-1731INTERCHANGEABLE
METER,TIME TOTALIZING
6645-01-356-2271INTERCHANGEABLE
METER,TIME TOTALIZING
6645-01-550-4586INTERCHANGEABLE
METER,TIME TOTALIZING

Frequently Asked Questions

What is NSN 6645-01-265-8708?

NSN 6645-01-265-8708 is a Meter,time Totalizing, manufactured by Federal Commercial Item Description Promulgated by General Services Administration Washington DC, classified under FSC 6645 (No Item Name Available). Status: active.

What are the part numbers for NSN 6645-01-265-8708?

NSN 6645-01-265-8708 has 4 cross-referenced part numbers: AA59400-3B (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), A-A-59400 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), MIL-M-7793/1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MS21341B-07 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 6645-01-265-8708?

There are 11 known substitutes for 6645-01-265-8708: 6635-00-182-7534, 6645-00-255-1369, 6635-00-545-8500 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AA59400-3B?

Key specifications for AA59400-3B: Terminal Type: HOOK; Mounting Type: FLANGE; Background Color: BLACK BACKGROUND; Indicator Type: DRUM REGISTER. 21 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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