PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40C9-1Counter,rotating

Telex Computer Products Inc · NSN 6680-00-542-1183 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-00-542-1183 — this item is cataloged by the U.S. Government under National Stock Number 6680-00-542-1183. Primary manufacturer part number: 40C9-1.
Features
  • Counter,rotating — FSC 6680
  • Longest Vertical Distance Between Mounting Centers: 0.625 INCHES NOMINAL IN
  • Shaft Rotation Direction and Maximum Speed in RPM: UNABLE TO DECODE
  • Mounting Type for Which Designed: UNABLE TO DECODE
  • Color: BLACK THIRD TEMP COEFFICIENT
  • Numeral Display Method: DRUM
  • Style Designator: SQUARE/RECTANGULAR CASED
  • Shaft Length: 0.438 INCHES NOMINAL IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Counter,rotating, cataloged under National Stock Number 6680-00-542-1183, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Telex Computer Products Inc. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6680-00-542-1183
Primary Part Number40C9-1
Item NameCounter,rotating
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerTelex Computer Products Inc
StatusACTIVE
Longest Vertical Distance Between Mounting Centers0.625 INCHES NOMINAL IN
Shaft Rotation Direction and Maximum Speed in RPMUNABLE TO DECODE
Mounting Type for Which DesignedUNABLE TO DECODE
ColorBLACK THIRD TEMP COEFFICIENT
Numeral Display MethodDRUM
Style DesignatorSQUARE/RECTANGULAR CASED
Shaft Length0.438 INCHES NOMINAL IN
Shaft Diameter0.200 INCHES NOMINAL IN
Mounting Facility Type and Quantity2 THREADED HOLE(S)
Figure HeightUNABLE TO DECODE
Shaft Revolutions Per CountUNABLE TO DECODE
Maximum Count RateUNABLE TO DECODE
Register Reset MethodUNABLE TO DECODE
Figure Quantity Per RegisterUNABLE TO DECODE
ColorWHITE SECOND TEMP COEFFICIENT
Register Quantity1
Actuating Device LocationRIGHT SIDE SINGLE REGISTER SINGLE TIER
Mounting Arrangement StyleTWO POSITION VERTICAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5940-00-242-2838G649069 INTERCHANGEABLE
Terminal Box
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
2990-00-628-0636155-0480 INTERCHANGEABLE
Muffler,exhaust
Cummins Power Generation Inc.
5910-00-822-3765 INTERCHANGEABLE
Capacitor,fixed,ceramic Dielectr
5360-01-277-2173 INTERCHANGEABLE
Spring,helical,compression
6515-01-699-6797AY-81-101BK-SG INTERCHANGEABLE
Brace,ankle
Cruze Distribution, Llc Dba Aryse
Cross-Reference Index
Part NumberManufacturer
40C9-1 Telex Computer Products Inc (USA)
3Y9342AC Eaton Corp Count Control/systems Div (USA)
3Y31125400AC Eaton Corp Count Control/systems Div (USA)
40A9 Telex Computer Products Inc (USA)
155793 National Security Agency (USA)
CM6A124 Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S (USA)
40C9 Telex Computer Products Inc (USA)
1-0353 1.2 Redington Counters Inc (USA)
Related Parts
5940-00-242-2838INTERCHANGEABLE
TERMINAL BOX
G649069
2990-00-628-0636INTERCHANGEABLE
MUFFLER,EXHAUST
155-0480
5910-00-822-3765INTERCHANGEABLE
CAPACITOR,FIXED,CERAMIC DIELECTR
5360-01-277-2173INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
6515-01-699-6797INTERCHANGEABLE
BRACE,ANKLE
AY-81-101BK-SG

Frequently Asked Questions

What is NSN 6680-00-542-1183?

NSN 6680-00-542-1183 is a Counter,rotating, manufactured by Telex Computer Products Inc, classified under FSC 6680 (No Item Name Available). Status: active.

What are the part numbers for NSN 6680-00-542-1183?

NSN 6680-00-542-1183 has 8 cross-referenced part numbers: 40C9-1 (Telex Computer Products Inc), 3Y9342AC (Eaton Corp Count Control/systems Div), 3Y31125400AC (Eaton Corp Count Control/systems Div), 40A9 (Telex Computer Products Inc), 155793 (National Security Agency) and 3 more.

What NSN replaces 6680-00-542-1183?

There are 5 known substitutes for 6680-00-542-1183: 5940-00-242-2838, 2990-00-628-0636, 5910-00-822-3765 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 40C9-1?

Key specifications for 40C9-1: Longest Vertical Distance Between Mounting Centers: 0.625 INCHES NOMINAL IN; Shaft Rotation Direction and Maximum Speed in RPM: UNABLE TO DECODE; Overall Height: 1.000 INCHES NOMINAL IN; Mounting Type for Which Designed: UNABLE TO DECODE. 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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