PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4001-001Counter,rotating

Melland Gear & Instrument of Hauppauge, Inc · NSN 6680-00-945-9101 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-00-945-9101 — this item is cataloged by the U.S. Government under National Stock Number 6680-00-945-9101. Primary manufacturer part number: 4001-001.
Features
  • Counter,rotating — FSC 6680
  • Color: WHITE SECOND TEMP COEFFICIENT
  • Register Function: UNABLE TO DECODE
  • Actuating Device Location: LEFT SIDE SINGLE REGISTER SINGLE TIER
  • Mounting Type for Which Designed: UNABLE TO DECODE
  • Color: BLACK THIRD TEMP COEFFICIENT
  • Numeral Display Method: DRUM
  • Style Designator: SQUARE/RECTANGULAR CASED
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Counter,rotating, cataloged under National Stock Number 6680-00-945-9101, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Melland Gear & Instrument of Hauppauge, Inc. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6680-00-945-9101
Primary Part Number4001-001
Item NameCounter,rotating
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerMelland Gear & Instrument of Hauppauge, Inc
StatusACTIVE
ColorWHITE SECOND TEMP COEFFICIENT
Register FunctionUNABLE TO DECODE
Actuating Device LocationLEFT SIDE SINGLE REGISTER SINGLE TIER
Mounting Type for Which DesignedUNABLE TO DECODE
ColorBLACK THIRD TEMP COEFFICIENT
Numeral Display MethodDRUM
Style DesignatorSQUARE/RECTANGULAR CASED
Mounting Facility Type and Quantity4 THREADED HOLE(S)
Register Quantity1
Longest Vertical Distance Between Mounting Centers0.218 INCHES NOMINAL IN
Figure HeightUNABLE TO DECODE
Mounting Arrangement StyleFOUR POSITION SQUARE/RECTANGLE
Figure Quantity Per RegisterUNABLE TO DECODE
Longest Horizontal Distance Between Mounting Centers0.375 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-100-07573191 INTERCHANGEABLE
Cone and Rollers,tapered Roller
Federal-Mogul Corp Government Sales Dept
5305-00-207-535743577921-3015 INTERCHANGEABLE
Screw,machine
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5330-00-728-7472TE709001 INTERCHANGEABLE
Gasket
Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems
6220-00-774-4704860-2301 INTERCHANGEABLE
Headlight
Advanced Technology Corp
6240-01-007-119940-0100-1 INTERCHANGEABLE
Rotary Beacon
Grimes Aerospace Company
5985-01-341-0846412690 INTERCHANGEABLE
Coupler,directional
Aimtron Systems, Llc
5950-01-346-153030163 INTERCHANGEABLE
Transformer,power
Torotel, Inc. Div Torotel Products, Inc.
3460-01-432-566630163 INTERCHANGEABLE
Wiper,machine Cleaning
Hampton Hydraulics, Llc. Dba Great Bend Industries Div Hampton Hydraulics, Llc.
5998-01-486-152230163 INTERCHANGEABLE
Printed Circuit Board
Munters Corporation Dba Munters Des Champs Products Div Cargocaire
4820-01-514-1772330163-010NM INTERCHANGEABLE
Guide,valve Stem
Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris
Cross-Reference Index
Part NumberManufacturer
30-163-1 Meggitt (new Hampshire), Inc (USA)
926C341 Bae Systems Controls Inc. (USA)
30-163 Meggitt (new Hampshire), Inc (USA)
4001-001 PRIMARY Melland Gear & Instrument of Hauppauge, Inc (USA)
Related Parts
3110-00-100-0757INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
3191
5305-00-207-5357INTERCHANGEABLE
SCREW,MACHINE
43577921-3015
5330-00-728-7472INTERCHANGEABLE
GASKET
TE709001
6220-00-774-4704INTERCHANGEABLE
HEADLIGHT
860-2301
6240-01-007-1199INTERCHANGEABLE
ROTARY BEACON
40-0100-1
5985-01-341-0846INTERCHANGEABLE
COUPLER,DIRECTIONAL
412690
5950-01-346-1530INTERCHANGEABLE
TRANSFORMER,POWER
30163
3460-01-432-5666INTERCHANGEABLE
WIPER,MACHINE CLEANING
30163
5998-01-486-1522INTERCHANGEABLE
PRINTED CIRCUIT BOARD
30163
4820-01-514-1772INTERCHANGEABLE
GUIDE,VALVE STEM
330163-010NM
5133-01-525-6149INTERCHANGEABLE
DRILL,TWIST
30-163
5340-01-615-1983INTERCHANGEABLE
STOP,MECHANICAL
301631

Frequently Asked Questions

What is NSN 6680-00-945-9101?

NSN 6680-00-945-9101 is a Counter,rotating, manufactured by Melland Gear & Instrument of Hauppauge, Inc, classified under FSC 6680 (No Item Name Available). Status: active.

What are the part numbers for NSN 6680-00-945-9101?

NSN 6680-00-945-9101 has 4 cross-referenced part numbers: 30-163-1 (Meggitt (new Hampshire), Inc), 926C341 (Bae Systems Controls Inc.), 30-163 (Meggitt (new Hampshire), Inc), 4001-001 (Melland Gear & Instrument of Hauppauge, Inc).

What NSN replaces 6680-00-945-9101?

There are 12 known substitutes for 6680-00-945-9101: 3110-00-100-0757, 5305-00-207-5357, 5330-00-728-7472 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4001-001?

Key specifications for 4001-001: Color: WHITE SECOND TEMP COEFFICIENT; Register Function: UNABLE TO DECODE; Actuating Device Location: LEFT SIDE SINGLE REGISTER SINGLE TIER; Mounting Type for Which Designed: UNABLE TO DECODE. 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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