PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

454-821Counter,rotating

Cmc Electronics Inc · NSN 6680-00-904-5108 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-00-904-5108 — this item is cataloged by the U.S. Government under National Stock Number 6680-00-904-5108. Primary manufacturer part number: 454-821.
Features
  • Counter,rotating — FSC 6680
  • Numeral Display Method: DRUM
  • Maximum Count Rate: UNABLE TO DECODE
  • Figure Height: UNABLE TO DECODE
  • Mounting Type for Which Designed: UNABLE TO DECODE
  • Mounting Facility Type and Quantity: 3 THREADED HOLE(S)
  • Actuating Device Location: LEFT SIDE SINGLE REGISTER SINGLE TIER
  • Style Designator: UNENCLOSED SQUARE OR RECTANGULAR
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Counter,rotating, cataloged under National Stock Number 6680-00-904-5108, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Cmc Electronics Inc. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 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
NSN6680-00-904-5108
Primary Part Number454-821
Item NameCounter,rotating
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerCmc Electronics Inc
StatusCANCELLED
Numeral Display MethodDRUM
Maximum Count RateUNABLE TO DECODE
Figure HeightUNABLE TO DECODE
Mounting Type for Which DesignedUNABLE TO DECODE
Mounting Facility Type and Quantity3 THREADED HOLE(S)
Actuating Device LocationLEFT SIDE SINGLE REGISTER SINGLE TIER
Style DesignatorUNENCLOSED SQUARE OR RECTANGULAR
ColorBLACK THIRD TEMP COEFFICIENT
Register Reset MethodUNABLE TO DECODE
Shaft Length0.281 INCHES NOMINAL IN
Register Quantity1
Figure Quantity Per RegisterUNABLE TO DECODE
Shaft Revolutions Per CountUNABLE TO DECODE
Shaft Diameter0.089 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
Shortest Horizontal Distance Between Mounting Centers0.610 INCHES NOMINAL IN
ColorWHITE SECOND TEMP COEFFICIENT
Longest Horizontal Distance Between Mounting Centers1.109 INCHES NOMINAL IN
Longest Vertical Distance Between Mounting Centers0.950 INCHES NOMINAL IN
Mounting Arrangement StyleTHREE POSITION TRIANGULAR
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5310-00-018-60373144 INTERCHANGEABLE
Nut,swivel
Roller Bearing Co of America, Inc Div Pic Design
5961-00-069-506605-03144-0A INTERCHANGEABLE
Semiconductor Device,diode
Ballantine Laboratories Inc
3110-00-155-67460042971 INTERCHANGEABLE
Bearing,ball,annular
New Holland Construction
5220-00-215-2171 INTERCHANGEABLE
Gage,profile
2940-00-300-0891151940 INTERCHANGEABLE
Filter Element,intake Air Cleane
Cummins Inc.
5950-00-691-0270109B108-1 INTERCHANGEABLE
Reactor
Telephonics Corp
6680-01-003-1111313144 INTERCHANGEABLE
Tachometer,vibrating Reed
Avo Intl
2530-01-022-6198 INTERCHANGEABLE
Cylinder Assembly,hydraulic Brak
6515-01-061-63853144 INTERCHANGEABLE
Stockings,anti-Embolism
Covidien Sales Llc Dba Covidien Sales
5136-01-152-4630 INTERCHANGEABLE
Die,thread Cutting
Cross-Reference Index
Part NumberManufacturer
DC3144 Bowmar Llc Dba Bowmar Instrument Corp (USA)
454-821 PRIMARY Cmc Electronics Inc (CAN)
3144 Bowmar Llc Dba Bowmar Instrument Corp (USA)
Related Parts
5310-00-018-6037INTERCHANGEABLE
NUT,SWIVEL
3144
5961-00-069-5066INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
05-03144-0A
3110-00-155-6746INTERCHANGEABLE
BEARING,BALL,ANNULAR
0042971
5220-00-215-2171INTERCHANGEABLE
GAGE,PROFILE
2940-00-300-0891INTERCHANGEABLE
FILTER ELEMENT,INTAKE AIR CLEANE
151940
5950-00-691-0270INTERCHANGEABLE
REACTOR
109B108-1
6680-01-003-1111INTERCHANGEABLE
TACHOMETER,VIBRATING REED
313144
2530-01-022-6198INTERCHANGEABLE
CYLINDER ASSEMBLY,HYDRAULIC BRAK
6515-01-061-6385INTERCHANGEABLE
STOCKINGS,ANTI-EMBOLISM
3144
5136-01-152-4630INTERCHANGEABLE
DIE,THREAD CUTTING
5340-01-157-6088INTERCHANGEABLE
SNAP HOOK
USR-01-CFE
4510-01-208-7209INTERCHANGEABLE
WATER CLOSET
091-1605

Frequently Asked Questions

What is NSN 6680-00-904-5108?

NSN 6680-00-904-5108 is a Counter,rotating, manufactured by Cmc Electronics Inc, classified under FSC 6680 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6680-00-904-5108?

NSN 6680-00-904-5108 has 3 cross-referenced part numbers: DC3144 (Bowmar Llc Dba Bowmar Instrument Corp), 454-821 (Cmc Electronics Inc), 3144 (Bowmar Llc Dba Bowmar Instrument Corp).

What NSN replaces 6680-00-904-5108?

There are 12 known substitutes for 6680-00-904-5108: 5310-00-018-6037, 5961-00-069-5066, 3110-00-155-6746 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 454-821?

Key specifications for 454-821: Numeral Display Method: DRUM; Overall Width: 1.875 INCHES NOMINAL IN; Maximum Count Rate: UNABLE TO DECODE; Figure Height: UNABLE TO DECODE. 23 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6680-00-904-5108 still in active supply?

NSN 6680-00-904-5108 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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