PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2531489Meter,time Totalizing

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 6645-00-402-5467 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-00-402-5467 — this item is cataloged by the U.S. Government under National Stock Number 6645-00-402-5467. Primary manufacturer part number: 2531489.
Features
  • Meter,time Totalizing — FSC 6645
  • Unit Type: MOUNTED
  • Operating Frequency: 60.0 HERTZ NOMINAL
  • Smallest Increment Indicated: 1.00
  • Marking Color: WHITE
  • Mounting Configuration: FOUR MTD STUDS,NO. 4-40 THD,0.500 IN. LG ON 1.312 IN. BY 1.312 IN. MTG CENTERS IN
  • Mounting Method: FLUSH
  • Background Color: BLACK
Applications
  • Applications requiring Aluminum or Steel Case construction
General Description

The Meter,time Totalizing, cataloged under National Stock Number 6645-00-402-5467, is classified within Federal Supply Class 6645 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6645-00-402-5467
Primary Part Number2531489
Item NameMeter,time Totalizing
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Unit TypeMOUNTED
Operating Frequency60.0 HERTZ NOMINAL
Smallest Increment Indicated1.00
Marking ColorWHITE
Mounting ConfigurationFOUR MTD STUDS,NO. 4-40 THD,0.500 IN. LG ON 1.312 IN. BY 1.312 IN. MTG CENTERS IN
Mounting MethodFLUSH
Background ColorBLACK
Electrical Movement TypeSYNCHRONOUS MOTOR
Measurement UnitHOURS
Reset FeatureNOT PROVIDED
Movement TypeELECTRICAL
Flange Height1.687 INCHES NOMINAL IN
Voltage Rating115.0 VOLTS NOMINAL
MaterialALUMINUM OR STEEL CASE
Maximum Measurement99999.00
Indicator TypeDRUM REGISTER
Hermetic ProtectionPROVIDED
Current TypeAC
Terminal Quantity2
Terminal TypeSOLDER LUG
Mounting Flange Width1.687 INCHES NOMINAL IN
Body Length1.250 INCHES NOMINAL IN
Mounting TypePANEL
Body Width1.064 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
6645-00-456-7653 INTERCHANGEABLE
Meter,time Totalizing
Cross-Reference Index
Part NumberManufacturer
2531489 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
620 Cramer Co Division of Chestnut Group Inc (USA)
Related Parts
6645-00-456-7653INTERCHANGEABLE
METER,TIME TOTALIZING

Frequently Asked Questions

What is NSN 6645-00-402-5467?

NSN 6645-00-402-5467 is a Meter,time Totalizing, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 6645 (No Item Name Available). Status: active.

What are the part numbers for NSN 6645-00-402-5467?

NSN 6645-00-402-5467 has 2 cross-referenced part numbers: 2531489 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 620 (Cramer Co Division of Chestnut Group Inc).

What NSN replaces 6645-00-402-5467?

There is 1 known substitute for 6645-00-402-5467: 6645-00-456-7653. Verify interchangeability with system specifications before substitution.

What are the specifications of 2531489?

Key specifications for 2531489: Unit Type: MOUNTED; Operating Frequency: 60.0 HERTZ NOMINAL; Smallest Increment Indicated: 1.00; Marking Color: WHITE. 28 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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