PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

458-0995-00Meter,time Totalizing

Rockwell Collins, Inc. Div Collins Aerospace - Mission Systems · NSN 6645-00-789-5210 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-00-789-5210 — this item is cataloged by the U.S. Government under National Stock Number 6645-00-789-5210. Primary manufacturer part number: 458-0995-00.
Features
  • Meter,time Totalizing — FSC 6645
  • Mounting Type: PANEL
  • Unit Type: MOUNTED
  • Flange Height: 0.937 INCHES NOMINAL IN
  • Marking Color: WHITE NUMERALS
  • Reset Feature: NOT PROVIDED
  • Operating Frequency: 400.0 HERTZ NOMINAL
  • Measurement Unit: HOURS
Applications
  • Applications requiring Aluminum or Steel Case construction
General Description

The Meter,time Totalizing, cataloged under National Stock Number 6645-00-789-5210, is classified within Federal Supply Class 6645 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Rockwell Collins, Inc. Div Collins Aerospace - Mission Systems. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 17 commercial cross-references from 12 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6645-00-789-5210
Primary Part Number458-0995-00
Item NameMeter,time Totalizing
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerRockwell Collins, Inc. Div Collins Aerospace - Mission Systems
StatusCANCELLED
Mounting TypePANEL
Unit TypeMOUNTED
Flange Height0.937 INCHES NOMINAL IN
Marking ColorWHITE NUMERALS
Reset FeatureNOT PROVIDED
Operating Frequency400.0 HERTZ NOMINAL
Measurement UnitHOURS
Smallest Increment Indicated0.10
MaterialALUMINUM OR STEEL CASE
Maximum Measurement9999.90
Voltage Rating115.0 VOLTS NOMINAL
Mounting ConfigurationTWO 0.125 IN. DIA MTG HOLES SPACED 1 IN. C TO C IN
Background ColorBLACK
Movement TypeELECTRICAL
Electrical Movement TypeSYNCHRONOUS MOTOR
Indicator TypeDRUM REGISTER
Mounting MethodSEMIFLUSH
Hermetic ProtectionPROVIDED
Body Depth1.437 INCHES NOMINAL IN
Mounting Flange Width1.312 INCHES NOMINAL IN
Terminal Quantity2
Current TypeAC
Body Diameter0.687 INCHES NOMINAL IN
Terminal TypeSTUD
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
6645-00-255-1372 INTERCHANGEABLE
Meter,time Totalizing
6645-00-985-406395B8CE INTERCHANGEABLE
Meter,time Totalizing
Electrodynamics Inc Div L3harris Electrodynamics Inc
1280-01-317-7864260376-5 INTERCHANGEABLE
Weight,trim
Lockheed Martin Corporation
Cross-Reference Index
Part NumberManufacturer
458-0995-00 Rockwell Collins, Inc. Div Collins Aerospace - Mission Systems (USA)
416989-10 Raytheon Company Dba Raytheon (USA)
95B8CD50 Electrodynamics Inc Div L3harris Electrodynamics Inc (USA)
458-0995-010 Rockwell Collins, Inc. Div Collins Aerospace - Mission Systems (USA)
K19223G4A Vdo Control Systems Inc (USA)
95B8CE50 Electrodynamics Inc Div L3harris Electrodynamics Inc (USA)
QB220737 Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div (USA)
542-5002-90 Rockwell Collins, Inc. Div Collins Aerospace - Mission Systems (USA)
05842-00008 Leonardo Mw Ltd (GBR)
QB220737 Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems (USA)
MS17322-2A Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
05842-00008 Leonardo Uk Ltd (GBR)
2603765 Alliant Techsystems Operations Llc Div Defense Electronic Systems (USA)
U531658-1X Triumph Thermal Systems, Llc (USA)
458-0995-000 Rockwell Collins, Inc. Div Collins Aerospace - Mission Systems (USA)
X2703-1 Bowmar Llc Dba Bowmar Instrument Corp (USA)
458-0995-010 Vdo Control Systems Inc (USA)
Related Parts
6645-00-255-1372INTERCHANGEABLE
METER,TIME TOTALIZING
6645-00-985-4063INTERCHANGEABLE
METER,TIME TOTALIZING
95B8CE
1280-01-317-7864INTERCHANGEABLE
WEIGHT,TRIM
260376-5

Frequently Asked Questions

What is NSN 6645-00-789-5210?

NSN 6645-00-789-5210 is a Meter,time Totalizing, manufactured by Rockwell Collins, Inc. Div Collins Aerospace - Mission Systems, classified under FSC 6645 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6645-00-789-5210?

NSN 6645-00-789-5210 has 17 cross-referenced part numbers: 458-0995-00 (Rockwell Collins, Inc. Div Collins Aerospace - Mission Systems), 416989-10 (Raytheon Company Dba Raytheon), 95B8CD50 (Electrodynamics Inc Div L3harris Electrodynamics Inc), 458-0995-010 (Rockwell Collins, Inc. Div Collins Aerospace - Mission Systems), K19223G4A (Vdo Control Systems Inc) and 12 more.

What NSN replaces 6645-00-789-5210?

There are 3 known substitutes for 6645-00-789-5210: 6645-00-255-1372, 6645-00-985-4063, 1280-01-317-7864. Verify interchangeability with system specifications before substitution.

What are the specifications of 458-0995-00?

Key specifications for 458-0995-00: Mounting Type: PANEL; Unit Type: MOUNTED; Flange Height: 0.937 INCHES NOMINAL IN; Marking Color: WHITE NUMERALS. 24 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6645-00-789-5210 still in active supply?

NSN 6645-00-789-5210 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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