PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3020Indicator,sight,liquid

Machine Products Corp · NSN 6680-00-450-6943 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-00-450-6943 — this item is cataloged by the U.S. Government under National Stock Number 6680-00-450-6943. Primary manufacturer part number: 3020.
Features
  • Indicator,sight,liquid — FSC 6680
  • Thread Direction: UNABLE TO DECODE
  • Thread Quantity Per Inch: UNABLE TO DECODE
  • Sight Diameter: 1.700 INCHES NOMINAL IN
  • Nominal Pipe Size for Which Designed: UNABLE TO DECODE
  • End Connection Type: UNABLE TO DECODE
  • Nominal Thread Size: UNABLE TO DECODE
  • Flange Outside Diameter: 1.125 INCHES NOMINAL IN
Applications
  • Applications requiring Copper Alloy construction
General Description

The Indicator,sight,liquid, cataloged under National Stock Number 6680-00-450-6943, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Machine Products Corp. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6680-00-450-6943
Primary Part Number3020
Item NameIndicator,sight,liquid
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerMachine Products Corp
StatusCANCELLED
Thread DirectionUNABLE TO DECODE
Thread Quantity Per InchUNABLE TO DECODE
Sight Diameter1.700 INCHES NOMINAL IN
Nominal Pipe Size for Which DesignedUNABLE TO DECODE
End Connection TypeUNABLE TO DECODE
Nominal Thread SizeUNABLE TO DECODE
Flange Outside Diameter1.125 INCHES NOMINAL IN
Style DesignatorDOUBLE PORT
Thread Series DesignatorUNABLE TO DECODE
MaterialCOPPER ALLOY
Media for Which DesignedANY ACCEPTABLE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
3413-01-143-3610200F INTERCHANGEABLE
Drilling Machine,upright
Fm Af, Llc Dba American Fan Company
5360-01-228-0871200F INTERCHANGEABLE
Spring,helical,compression
Anderson Greenwood Lp Dba Anderson Greenwood Crosby
4130-01-388-6582 INTERCHANGEABLE
Filter Element,air Conditioning
5120-01-430-5070200F INTERCHANGEABLE
Riveter,blind,hand
Matco Tools Corp Div Matco Tools
4730-01-505-5540200F INTERCHANGEABLE
Coupling Half,quick Disconnect
Banjo Corp
Cross-Reference Index
Part NumberManufacturer
200-4F Machine Products Corp (USA)
200F Macgregor Instrument Co (USA)
3020 PRIMARY Machine Products Corp (USA)
3020 Macgregor Instrument Co (USA)
Related Parts
3413-01-143-3610INTERCHANGEABLE
DRILLING MACHINE,UPRIGHT
200F
5360-01-228-0871INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
200F
4130-01-388-6582INTERCHANGEABLE
FILTER ELEMENT,AIR CONDITIONING
5120-01-430-5070INTERCHANGEABLE
RIVETER,BLIND,HAND
200F
4730-01-505-5540INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
200F

Frequently Asked Questions

What is NSN 6680-00-450-6943?

NSN 6680-00-450-6943 is a Indicator,sight,liquid, manufactured by Machine Products Corp, classified under FSC 6680 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6680-00-450-6943?

NSN 6680-00-450-6943 has 4 cross-referenced part numbers: 200-4F (Machine Products Corp), 200F (Macgregor Instrument Co), 3020 (Machine Products Corp), 3020 (Macgregor Instrument Co).

What NSN replaces 6680-00-450-6943?

There are 5 known substitutes for 6680-00-450-6943: 3413-01-143-3610, 5360-01-228-0871, 4130-01-388-6582 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3020?

Key specifications for 3020: Thread Direction: UNABLE TO DECODE; Thread Quantity Per Inch: UNABLE TO DECODE; Sight Diameter: 1.700 INCHES NOMINAL IN; Nominal Pipe Size for Which Designed: UNABLE TO DECODE. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6680-00-450-6943 still in active supply?

NSN 6680-00-450-6943 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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