PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40178REVAMeter,time Totalizing

Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems · NSN 6645-00-285-8781 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-00-285-8781 — this item is cataloged by the U.S. Government under National Stock Number 6645-00-285-8781. Primary manufacturer part number: 40178REVA.
Features
  • Meter,time Totalizing — FSC 6645
  • Movement Type: ELECTRICAL
  • Voltage Rating: 110.0 VOLTS NOMINAL
  • Mounting Type: PANEL
  • Background Color: A/A
  • Indicator Type: DRUM REGISTER
  • Operating Frequency: 60.0 HERTZ NOMINAL
  • Mounting Method: FLUSH
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Meter,time Totalizing, cataloged under National Stock Number 6645-00-285-8781, is classified within Federal Supply Class 6645 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems. Government technical data includes 21 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6645-00-285-8781
Primary Part Number40178REVA
Item NameMeter,time Totalizing
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerBae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
StatusCANCELLED
Movement TypeELECTRICAL
Voltage Rating110.0 VOLTS NOMINAL
Mounting TypePANEL
Background ColorA/A
Indicator TypeDRUM REGISTER
Operating Frequency60.0 HERTZ NOMINAL
Mounting MethodFLUSH
Maximum Measurement9999.90
Measurement UnitHOURS
Reset FeatureNOT PROVIDED
Mounting Flange Diameter3.500 INCHES NOMINAL IN
Electrical Movement TypeSYNCHRONOUS MOTOR
Marking ColorBLACK NUMERALS FOR HOURS,RED NUMERALS FOR TENTHS
Body Diameter2.800 INCHES NOMINAL IN
Smallest Increment Indicated0.10
Body Depth2.766 INCHES NOMINAL IN
Terminal Quantity2
Unit TypeMOUNTED
Current TypeAC
Mounting ConfigurationTHREE 0.150 IN. DIA MTG HOLES SPACED AT 120 DEG ON 1.580 IN. RADIUS IN
Terminal TypeSOLDER LUG
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
6645-00-618-9496 INTERCHANGEABLE
Meter,time Totalizing
Cross-Reference Index
Part NumberManufacturer
HE21H Cramer Co Division of Chestnut Group Inc (USA)
40178REVA PRIMARY Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems (USA)
40178REVA Lockheed Corp Lockheed Electronics Co Inc (USA)
630H Cramer Co Division of Chestnut Group Inc (USA)
Related Parts
6645-00-618-9496INTERCHANGEABLE
METER,TIME TOTALIZING

Frequently Asked Questions

What is NSN 6645-00-285-8781?

NSN 6645-00-285-8781 is a Meter,time Totalizing, manufactured by Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems, classified under FSC 6645 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6645-00-285-8781?

NSN 6645-00-285-8781 has 4 cross-referenced part numbers: HE21H (Cramer Co Division of Chestnut Group Inc), 40178REVA (Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems), 40178REVA (Lockheed Corp Lockheed Electronics Co Inc), 630H (Cramer Co Division of Chestnut Group Inc).

What NSN replaces 6645-00-285-8781?

There is 1 known substitute for 6645-00-285-8781: 6645-00-618-9496. Verify interchangeability with system specifications before substitution.

What are the specifications of 40178REVA?

Key specifications for 40178REVA: Movement Type: ELECTRICAL; Voltage Rating: 110.0 VOLTS NOMINAL; Mounting Type: PANEL; Background Color: A/A. 21 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6645-00-285-8781 still in active supply?

NSN 6645-00-285-8781 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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