PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

100178Counter,rotating

Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp · NSN 6680-00-556-1662 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-00-556-1662 — this item is cataloged by the U.S. Government under National Stock Number 6680-00-556-1662. Primary manufacturer part number: 100178.
Features
  • Counter,rotating — FSC 6680
  • Figure Quantity Per Register: UNABLE TO DECODE
  • Mounting Type for Which Designed: UNABLE TO DECODE
  • Figure Height: UNABLE TO DECODE
  • Color: BLACK THIRD TEMP COEFFICIENT
  • Mounting Facility Type and Quantity: 1 GIB
  • Style Designator: SQUARE/RECTANGULAR CASED
  • Color: WHITE SECOND TEMP COEFFICIENT
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Counter,rotating, cataloged under National Stock Number 6680-00-556-1662, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6680-00-556-1662
Primary Part Number100178
Item NameCounter,rotating
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
StatusACTIVE
Figure Quantity Per RegisterUNABLE TO DECODE
Mounting Type for Which DesignedUNABLE TO DECODE
Figure HeightUNABLE TO DECODE
ColorBLACK THIRD TEMP COEFFICIENT
Mounting Facility Type and Quantity1 GIB
Style DesignatorSQUARE/RECTANGULAR CASED
ColorWHITE SECOND TEMP COEFFICIENT
Register Reset MethodUNABLE TO DECODE
Register Quantity1
Numeral Display MethodDRUM
Shaft Revolutions Per CountUNABLE TO DECODE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
1650-00-066-4415100178 INTERCHANGEABLE
Skirt,hydraulic Ser
Woodward Hrt Inc
4730-00-202-6491 INTERCHANGEABLE
Bushing,pipe
5910-00-445-1691 INTERCHANGEABLE
Capacitor,fixed,ceramic Dielectr
5910-00-689-8751 INTERCHANGEABLE
Capacitor,fixed,ceramic Dielectr
2810-00-772-6342100178 INTERCHANGEABLE
Plug
Mcculloch Corp
5935-01-024-0485 INTERCHANGEABLE
Connector,plug,electrical
6515-01-165-67181001-78 INTERCHANGEABLE
Loop,vascular,surgical
Scanlan Intl
4820-01-171-3305100178 INTERCHANGEABLE
Valve,gate
Champion Industries Inc.
3120-01-172-1977100178 INTERCHANGEABLE
Bearing,washer,thrust
Neptune Chemical Pump Co Div of R a Industries Inc
2920-01-434-030387-19674A2 INTERCHANGEABLE
Switch,engine Starter,electrical
Brunswick Corp Dba Mercury Marine Div Mercury Marine
Cross-Reference Index
Part NumberManufacturer
G568758 Advanced Computer Technology Inc Dba a C T (USA)
100178 PRIMARY Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
G568758 Stewart-Warner Corporation (USA)
Related Parts
1650-00-066-4415INTERCHANGEABLE
SKIRT,HYDRAULIC SER
100178
4730-00-202-6491INTERCHANGEABLE
BUSHING,PIPE
5910-00-445-1691INTERCHANGEABLE
CAPACITOR,FIXED,CERAMIC DIELECTR
5910-00-689-8751INTERCHANGEABLE
CAPACITOR,FIXED,CERAMIC DIELECTR
2810-00-772-6342INTERCHANGEABLE
PLUG
100178
5935-01-024-0485INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
6515-01-165-6718INTERCHANGEABLE
LOOP,VASCULAR,SURGICAL
1001-78
4820-01-171-3305INTERCHANGEABLE
VALVE,GATE
100178
3120-01-172-1977INTERCHANGEABLE
BEARING,WASHER,THRUST
100178
2920-01-434-0303INTERCHANGEABLE
SWITCH,ENGINE STARTER,ELECTRICAL
87-19674A2

Frequently Asked Questions

What is NSN 6680-00-556-1662?

NSN 6680-00-556-1662 is a Counter,rotating, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp, classified under FSC 6680 (No Item Name Available). Status: active.

What are the part numbers for NSN 6680-00-556-1662?

NSN 6680-00-556-1662 has 3 cross-referenced part numbers: G568758 (Advanced Computer Technology Inc Dba a C T), 100178 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), G568758 (Stewart-Warner Corporation).

What NSN replaces 6680-00-556-1662?

There are 10 known substitutes for 6680-00-556-1662: 1650-00-066-4415, 4730-00-202-6491, 5910-00-445-1691 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 100178?

Key specifications for 100178: Figure Quantity Per Register: UNABLE TO DECODE; Mounting Type for Which Designed: UNABLE TO DECODE; Figure Height: UNABLE TO DECODE; Color: BLACK THIRD TEMP COEFFICIENT. 15 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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