PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

50-236422AAAA2Meter,time Totalizing

Ametek Inc Div Aerospace and Defense · NSN 6645-00-905-7258 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-00-905-7258 — this item is cataloged by the U.S. Government under National Stock Number 6645-00-905-7258. Primary manufacturer part number: 50-236422AAAA2.
Features
  • Meter,time Totalizing — FSC 6645
  • Current Type: AC
  • Indicator Type: DRUM REGISTER
  • Background Color: BLACK BACKGROUND
  • Operating Frequency: 60.0 HERTZ NOMINAL
  • Marking Color: WHITE NUMERALS
  • Movement Type: ELECTRICAL
  • Electrical Movement Type: SYNCHRONOUS MOTOR
Applications
  • Applications requiring Plastic Case construction
General Description

The Meter,time Totalizing, cataloged under National Stock Number 6645-00-905-7258, is classified within Federal Supply Class 6645 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Ametek Inc Div Aerospace and Defense. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 24 commercial cross-references from 13 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6645-00-905-7258
Primary Part Number50-236422AAAA2
Item NameMeter,time Totalizing
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerAmetek Inc Div Aerospace and Defense
StatusCANCELLED
Current TypeAC
Indicator TypeDRUM REGISTER
Background ColorBLACK BACKGROUND
Operating Frequency60.0 HERTZ NOMINAL
Marking ColorWHITE NUMERALS
Movement TypeELECTRICAL
Electrical Movement TypeSYNCHRONOUS MOTOR
Maximum Measurement99999.90
Unit TypeMOUNTED
MaterialPLASTIC CASE
Mounting MethodFLUSH
Hermetic ProtectionNOT PROVIDED
Reset FeatureNOT PROVIDED
Flange Height2.667 INCHES NOMINAL IN
Body Depth2.766 INCHES NOMINAL IN
Mounting ConfigurationFOUR MTD STUDS NO. 4-40 THD,0.500 IN. LG ON 1.840 IN. MTG CENTERS IN
Measurement UnitHOURS
Voltage Rating120.0 VOLTS NOMINAL
Smallest Increment Indicated0.10
Terminal Quantity2
Terminal TypeSTUD
Mounting Flange Width2.667 INCHES NOMINAL IN
Mounting TypePANEL
Body Diameter2.185 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
3405-00-051-1664C5A INTERCHANGEABLE
Saw,band,cutoff
Doall Baltimore Company
6850-00-155-644476759 INTERCHANGEABLE
Chemical Antigalling Cmpd
Loctite Corp
6850-00-200-3782 INTERCHANGEABLE
Chemical Antigallin
8030-00-251-3980 INTERCHANGEABLE
Antiseize Compound
4320-00-398-9389BS4-1858PC4 INTERCHANGEABLE
Ring,wearing
Circor Naval Solutions Llc Dba Warren Pumps
5910-00-519-6793 INTERCHANGEABLE
Capacitor,fixed,mica Dielectric
5910-00-519-8859 INTERCHANGEABLE
Capacitor,fixed,mica Dielectric
6130-00-617-1816V200HP INTERCHANGEABLE
Rectifier,metallic
Dean Technology Inc. Dba Cke
5910-00-669-4066 INTERCHANGEABLE
Capacitor,fixed,mica Dielectric
6850-00-734-154651002 INTERCHANGEABLE
Lubricant,antiseize
Loctite Corp
Cross-Reference Index
Part NumberManufacturer
909X61 General Electric Company (USA)
KT909X85 Ametek Inc Div Aerospace and Defense (USA)
503952 Raytheon Technical Services Company (USA)
8KT11BAA2G General Electric Company (USA)
635Y115V60CPS Cramer Co Division of Chestnut Group Inc (USA)
50-236422AAAA1 Ametek Inc Div Aerospace and Defense (USA)
8KT11BAA2G Ametek Inc Div Aerospace and Defense (USA)
50-236422AAAA1JAB General Electric Company (USA)
C5A Essex Products Group, Inc. Dba Industrial Timer Company (USA)
10229349 Us Army Aviation and Missile Command (USA)
464803 Eastman Kodak Co Commercial & Government Systems (USA)
50-236422AAAA2 PRIMARY Ametek Inc Div Aerospace and Defense (USA)
495-1037-4 Lockheed Martin Corporation Div Lockheed Martin Information Systems & Global Solutions (USA)
635Y115VAC60CPS Cramer Co Division of Chestnut Group Inc (USA)
50-240611AAAD PRIMARY Ametek Inc Div Aerospace and Defense (USA)
50-235052AAAA1 Ametek Inc Div Aerospace and Defense (USA)
S1706 The Boeing Company Div Defense (USA)
503952 Cae Usa Inc. (USA)
07341 Edo (USA)
KT14BAA2G Ametek Inc Div Aerospace and Defense (USA)
Related Parts
3405-00-051-1664INTERCHANGEABLE
SAW,BAND,CUTOFF
C5A
6850-00-155-6444INTERCHANGEABLE
CHEMICAL ANTIGALLING CMPD
76759
6850-00-200-3782INTERCHANGEABLE
CHEMICAL ANTIGALLIN
8030-00-251-3980INTERCHANGEABLE
ANTISEIZE COMPOUND
4320-00-398-9389INTERCHANGEABLE
RING,WEARING
BS4-1858PC4
5910-00-519-6793INTERCHANGEABLE
CAPACITOR,FIXED,MICA DIELECTRIC
5910-00-519-8859INTERCHANGEABLE
CAPACITOR,FIXED,MICA DIELECTRIC
6130-00-617-1816INTERCHANGEABLE
RECTIFIER,METALLIC
V200HP
5910-00-669-4066INTERCHANGEABLE
CAPACITOR,FIXED,MICA DIELECTRIC
6850-00-734-1546INTERCHANGEABLE
LUBRICANT,ANTISEIZE
51002
6625-00-791-3679INTERCHANGEABLE
VOLTMETER
3010-01-005-2973INTERCHANGEABLE
COUPLING,SHAFT,FLEXIBLE

Frequently Asked Questions

What is NSN 6645-00-905-7258?

NSN 6645-00-905-7258 is a Meter,time Totalizing, manufactured by Ametek Inc Div Aerospace and Defense, classified under FSC 6645 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6645-00-905-7258?

NSN 6645-00-905-7258 has 24 cross-referenced part numbers: 909X61 (General Electric Company), KT909X85 (Ametek Inc Div Aerospace and Defense), 503952 (Raytheon Technical Services Company), 8KT11BAA2G (General Electric Company), 635Y115V60CPS (Cramer Co Division of Chestnut Group Inc) and 19 more.

What NSN replaces 6645-00-905-7258?

There are 12 known substitutes for 6645-00-905-7258: 3405-00-051-1664, 6850-00-155-6444, 6850-00-200-3782 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 50-236422AAAA2?

Key specifications for 50-236422AAAA2: Current Type: AC; Indicator Type: DRUM REGISTER; Background Color: BLACK BACKGROUND; Operating Frequency: 60.0 HERTZ NOMINAL. 24 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6645-00-905-7258 still in active supply?

NSN 6645-00-905-7258 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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