PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

550-3Indicator,sight,liquid

Lenz Inc Dba the Lenz Company · NSN 6680-01-183-9057 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-01-183-9057 — this item is cataloged by the U.S. Government under National Stock Number 6680-01-183-9057. Primary manufacturer part number: 550-3.
Features
  • Indicator,sight,liquid — FSC 6680
  • Distance Between Mounting Facility Centers: 3.250 INCHES NOMINAL IN
  • Style Designator: DOUBLE-MOUNT, SHIELDED, FRONT OPENING
  • Data Furnishing Method: CLEAR WINDOW
  • Thread Series Designator: UNABLE TO DECODE
  • Material: ALUMINUM ALLOY
  • Nominal Thread Size: UNABLE TO DECODE
  • Media for Which Designed: ANY ACCEPTABLE
Applications
  • Applications requiring Aluminum Alloy construction
General Description

The Indicator,sight,liquid, cataloged under National Stock Number 6680-01-183-9057, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Lenz Inc Dba the Lenz Company. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN6680-01-183-9057
Primary Part Number550-3
Item NameIndicator,sight,liquid
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerLenz Inc Dba the Lenz Company
StatusACTIVE
Distance Between Mounting Facility Centers3.250 INCHES NOMINAL IN
Style DesignatorDOUBLE-MOUNT, SHIELDED, FRONT OPENING
Data Furnishing MethodCLEAR WINDOW
Thread Series DesignatorUNABLE TO DECODE
MaterialALUMINUM ALLOY
Nominal Thread SizeUNABLE TO DECODE
Media for Which DesignedANY ACCEPTABLE
Furnished DataLIQUID LEVEL
End Connection TypeUNABLE TO DECODE
Thread ClassUNABLE TO DECODE
Sight Height2.219 INCHES NOMINAL IN
Maximum Temp Rating200.0 FAHRENHEIT DEGF
Thread DirectionUNABLE TO DECODE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6680-00-106-9544550-3 INTERCHANGEABLE
Indicator,sight,liquid
Tobeyco Mfg, Co, Inc. Div Federal Brass Mfg.
5342-00-410-01198Z64D16 INTERCHANGEABLE
Latch,special
Konecranes Inc Dba Milwaukee Parts Div Crane Pro Parts
5825-00-477-7848003822 INTERCHANGEABLE
Screen,exhaust
Moog Inc Div Moog Inc., Space and Defense - Salt Lake City
3110-00-555-54532-055-005-375 INTERCHANGEABLE
Bearing,ball,annular
Viking Pump, Inc
4820-00-618-72555503 INTERCHANGEABLE
Valve,globe
Dragon Valves Inc
7510-00-629-027355303 INTERCHANGEABLE
Tape,identification
Brady United States
1285-00-891-3296526-7727-003 INTERCHANGEABLE
Filter-Detector Ass
Clifton Metal Products Co Inc
4310-00-980-56015503 INTERCHANGEABLE
Crankcase,compressor
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
5133-01-043-7623 INTERCHANGEABLE
Drill,twist
3030-01-057-5893550-3STS INTERCHANGEABLE
Lacing,belt,pin
Flexible Steel Lacing Co
Cross-Reference Index
Part NumberManufacturer
550-3 PRIMARY Lenz Inc Dba the Lenz Company (USA)
Related Parts
6680-00-106-9544INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
550-3
5342-00-410-0119INTERCHANGEABLE
LATCH,SPECIAL
8Z64D16
5825-00-477-7848INTERCHANGEABLE
SCREEN,EXHAUST
003822
3110-00-555-5453INTERCHANGEABLE
BEARING,BALL,ANNULAR
2-055-005-375
4820-00-618-7255INTERCHANGEABLE
VALVE,GLOBE
5503
7510-00-629-0273INTERCHANGEABLE
TAPE,IDENTIFICATION
55303
1285-00-891-3296INTERCHANGEABLE
FILTER-DETECTOR ASS
526-7727-003
4310-00-980-5601INTERCHANGEABLE
CRANKCASE,COMPRESSOR
5503
5133-01-043-7623INTERCHANGEABLE
DRILL,TWIST
3030-01-057-5893INTERCHANGEABLE
LACING,BELT,PIN
550-3STS
5340-01-079-1231INTERCHANGEABLE
CLIP,SPRING TENSION
6680-01-140-8769INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
550-3

Frequently Asked Questions

What is NSN 6680-01-183-9057?

NSN 6680-01-183-9057 is a Indicator,sight,liquid, manufactured by Lenz Inc Dba the Lenz Company, classified under FSC 6680 (No Item Name Available). Status: active.

What are the part numbers for NSN 6680-01-183-9057?

NSN 6680-01-183-9057 has 1 cross-referenced part number: 550-3 (Lenz Inc Dba the Lenz Company).

What NSN replaces 6680-01-183-9057?

There are 12 known substitutes for 6680-01-183-9057: 6680-00-106-9544, 5342-00-410-0119, 5825-00-477-7848 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 550-3?

Key specifications for 550-3: Distance Between Mounting Facility Centers: 3.250 INCHES NOMINAL IN; Overall Height: 4.812 INCHES NOMINAL IN; Style Designator: DOUBLE-MOUNT, SHIELDED, FRONT OPENING; Data Furnishing Method: CLEAR WINDOW. 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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