PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3-642Cleaner,instrument Tubing

Fisher Scientific Worldwide · NSN 6640-00-494-3846 · FSC 6640 · No Item Name Available
Verified by PartsTable
NSN 6640-00-494-3846 — this item is cataloged by the U.S. Government under National Stock Number 6640-00-494-3846. Primary manufacturer part number: 3-642.
Features
  • Cleaner,instrument Tubing — FSC 6640
  • General Characteristics Item Description: MATERIAL DATA,COTTON TUFTS,STEEL WIRE; 8 MM DIA O/A; 50 FT LG MM
  • 2 verified cross-references
  • Primary manufacturer: Fisher Scientific Worldwide
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Cleaner,instrument Tubing, cataloged under National Stock Number 6640-00-494-3846, is classified within Federal Supply Class 6640 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Fisher Scientific Worldwide. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 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: Active.

Technical Specifications
ParameterValue
NSN6640-00-494-3846
Primary Part Number3-642
Item NameCleaner,instrument Tubing
FSC / FSG6640 / 66 — No Item Name Available
ManufacturerFisher Scientific Worldwide
StatusACTIVE
General Characteristics Item DescriptionMATERIAL DATA,COTTON TUFTS,STEEL WIRE; 8 MM DIA O/A; 50 FT LG MM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4820-00-018-39873642 INTERCHANGEABLE
Valve,pneumatic Tank
Schrader-Bridgeport International Inc Dba Schrader Automotive
4820-00-114-1096 INTERCHANGEABLE
Stem,fluid Valve
5930-00-127-93173642 INTERCHANGEABLE
Switch,code Indicating Wheel
Electro Switch Corp. Dba Electro Switch Corp Div Digitran a Unit of Electro Switch
2920-00-137-2015 INTERCHANGEABLE
Cover,spark Plug
5310-00-186-7540 INTERCHANGEABLE
Washer,flat
5935-00-243-76064408616 INTERCHANGEABLE
Connector,receptacle,electrical
Agco Corp Parts Opn
2945-00-328-339803S03753 INTERCHANGEABLE
Filter,fluid
Falls Filtration Technologies, Inc.
3610-00-457-8704 INTERCHANGEABLE
Bottle and Cap Assembly
6670-00-497-2147 INTERCHANGEABLE
V Tape Assembly,scale
2930-00-633-8598161127 INTERCHANGEABLE
Pump,water,diesel E
Cummins Inc.
Cross-Reference Index
Part NumberManufacturer
3-642 Fisher Scientific Worldwide (USA)
7-960 Manostat Corp (USA)
Related Parts
4820-00-018-3987INTERCHANGEABLE
VALVE,PNEUMATIC TANK
3642
4820-00-114-1096INTERCHANGEABLE
STEM,FLUID VALVE
5930-00-127-9317INTERCHANGEABLE
SWITCH,CODE INDICATING WHEEL
3642
2920-00-137-2015INTERCHANGEABLE
COVER,SPARK PLUG
5310-00-186-7540INTERCHANGEABLE
WASHER,FLAT
5935-00-243-7606INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
4408616
2945-00-328-3398INTERCHANGEABLE
FILTER,FLUID
03S03753
3610-00-457-8704INTERCHANGEABLE
BOTTLE AND CAP ASSEMBLY
6670-00-497-2147INTERCHANGEABLE
V TAPE ASSEMBLY,SCALE
2930-00-633-8598INTERCHANGEABLE
PUMP,WATER,DIESEL E
161127
5340-00-733-5014INTERCHANGEABLE
RETAINER,HELICAL COMPRESSION SPR
3642
5342-00-862-7169INTERCHANGEABLE
BRACKET,FILTER LOCK

Frequently Asked Questions

What is NSN 6640-00-494-3846?

NSN 6640-00-494-3846 is a Cleaner,instrument Tubing, manufactured by Fisher Scientific Worldwide, classified under FSC 6640 (No Item Name Available). Status: active.

What are the part numbers for NSN 6640-00-494-3846?

NSN 6640-00-494-3846 has 2 cross-referenced part numbers: 3-642 (Fisher Scientific Worldwide), 7-960 (Manostat Corp).

What NSN replaces 6640-00-494-3846?

There are 12 known substitutes for 6640-00-494-3846: 4820-00-018-3987, 4820-00-114-1096, 5930-00-127-9317 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3-642?

Key specifications for 3-642: General Characteristics Item Description: MATERIAL DATA,COTTON TUFTS,STEEL WIRE; 8 MM DIA O/A; 50 FT LG MM. 1 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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