PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

LH77/1-LC20WT3Light,indicator

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6210-00-229-5841 · FSC 6210 · No Item Name Available
Verified by PartsTable
NSN 6210-00-229-5841 — this item is cataloged by the U.S. Government under National Stock Number 6210-00-229-5841. Primary manufacturer part number: LH77/1-LC20WT3.
Features
  • Light,indicator — FSC 6210
  • Style Designator: ROUND FRAME, ROUND LENS TYPE
  • Panel Accommodation Hole Diameter: 0.688 INCHES MINIMUM AND 0.694 INCHES MAXIMUM IN
  • Lens Color: WHITE SINGLE LIGHT FIRST POSITION HORIZONTAL
  • Transmitted Light Color: WHITE SINGLE LIGHT FIRST POSITION HORIZONTAL FULL DISPLAY DIVISION A
  • Lens Face Surface Condition: SMOOTH SINGLE LIGHT FIRST POSITION HORIZONTAL
  • Lamp Type Accommodated and Quantity: 1 NEON
  • Lens Light Transmission Characteristic: TRANSLUCENT SINGLE LIGHT FIRST POSITION HORIZONTAL
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Light,indicator, cataloged under National Stock Number 6210-00-229-5841, is classified within Federal Supply Class 6210 (No Item Name Available) of the Lighting Fixtures and Lamps group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6210-00-229-5841
Primary Part NumberLH77/1-LC20WT3
Item NameLight,indicator
FSC / FSG6210 / 62 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Style DesignatorROUND FRAME, ROUND LENS TYPE
Panel Accommodation Hole Diameter0.688 INCHES MINIMUM AND 0.694 INCHES MAXIMUM IN
Lens ColorWHITE SINGLE LIGHT FIRST POSITION HORIZONTAL
Transmitted Light ColorWHITE SINGLE LIGHT FIRST POSITION HORIZONTAL FULL DISPLAY DIVISION A
Lens Face Surface ConditionSMOOTH SINGLE LIGHT FIRST POSITION HORIZONTAL
Lamp Type Accommodated and Quantity1 NEON
Lens Light Transmission CharacteristicTRANSLUCENT SINGLE LIGHT FIRST POSITION HORIZONTAL
Furnished Items and Quantity1 HEXAGON NUT AND 1 LOCK WASHER
Hazardous Locations/environmental ProtectionDRIPPROOF
Lens Quantity1
Lamp Base Type AccommodatedMINIATURE BAYONET
Overall Diameter0.938 INCHES MINIMUM AND 0.968 INCHES MAXIMUM IN
Lamp Bulb Size DesignatorT-3 1/4
Terminal Type and Quantity2 SOLDER LUG
Panel Thickness for Which Designed0.188 INCHES MAXIMUM IN
Lens Back Surface ConditionFLUTED SINGLE LIGHT FIRST POSITION HORIZONTAL
Mounting MethodPANEL
Lens TypeDOME, KNURLED, INTERNAL THREAD SINGLE LIGHT FIRST POSITION HORIZONTAL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
6210-00-159-1727 INTERCHANGEABLE
Housing,light
6210-00-840-1057 INTERCHANGEABLE
Housing,light
6210-00-844-7446 INTERCHANGEABLE
Light,indicator
6210-00-844-7449 INTERCHANGEABLE
Light,indicator
6210-00-989-9884 INTERCHANGEABLE
Housing,light
6210-01-003-8646 INTERCHANGEABLE
Light,indicator
6210-01-056-5164 INTERCHANGEABLE
Light,indicator
6210-01-149-8534 INTERCHANGEABLE
Light,indicator
Cross-Reference Index
Part NumberManufacturer
LH77/1-LC20WT3 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-3661/9 AND MIL-L-3661/20 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-3661/9 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-L-3661 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-3661/9 MIL-DTL-3661/20 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
6210-00-159-1727INTERCHANGEABLE
HOUSING,LIGHT
6210-00-840-1057INTERCHANGEABLE
HOUSING,LIGHT
6210-00-844-7446INTERCHANGEABLE
LIGHT,INDICATOR
6210-00-844-7449INTERCHANGEABLE
LIGHT,INDICATOR
6210-00-989-9884INTERCHANGEABLE
HOUSING,LIGHT
6210-01-003-8646INTERCHANGEABLE
LIGHT,INDICATOR
6210-01-056-5164INTERCHANGEABLE
LIGHT,INDICATOR
6210-01-149-8534INTERCHANGEABLE
LIGHT,INDICATOR

Frequently Asked Questions

What is NSN 6210-00-229-5841?

NSN 6210-00-229-5841 is a Light,indicator, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 6210 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6210-00-229-5841?

NSN 6210-00-229-5841 has 5 cross-referenced part numbers: LH77/1-LC20WT3 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-3661/9 AND MIL-L-3661/20 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-3661/9 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-L-3661 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-3661/9 MIL-DTL-3661/20 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 6210-00-229-5841?

There are 8 known substitutes for 6210-00-229-5841: 6210-00-159-1727, 6210-00-840-1057, 6210-00-844-7446 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of LH77/1-LC20WT3?

Key specifications for LH77/1-LC20WT3: Style Designator: ROUND FRAME, ROUND LENS TYPE; Panel Accommodation Hole Diameter: 0.688 INCHES MINIMUM AND 0.694 INCHES MAXIMUM IN; Lens Color: WHITE SINGLE LIGHT FIRST POSITION HORIZONTAL; Transmitted Light Color: WHITE SINGLE LIGHT FIRST POSITION HORIZONTAL FULL DISPLAY DIVISION A. 19 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6210-00-229-5841 still in active supply?

NSN 6210-00-229-5841 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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