PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

LH66PW2Light,indicator

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6210-00-519-1978 · FSC 6210 · No Item Name Available
Verified by PartsTable
NSN 6210-00-519-1978 — this item is cataloged by the U.S. Government under National Stock Number 6210-00-519-1978. Primary manufacturer part number: LH66PW2.
Features
  • Light,indicator — FSC 6210
  • Style Designator: ROUND FRAME, ROUND LENS TYPE
  • Lens Light Transmission Characteristic: TRANSPARENT SINGLE LIGHT FIRST POSITION HORIZONTAL
  • Features Provided: DIMMING DEVICE
  • Mounting Method: PANEL LOCATION NOT OTHERWISE SPECIFIED
  • Panel Accommodation Hole Diameter: 0.688 INCHES NOMINAL IN
  • Panel Thickness for Which Designed: 0.344 INCHES MAXIMUM IN
  • Mounting Method: SCREW IN LENS
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
  • Applications requiring Copper Alloy Body construction
General Description

The Light,indicator, cataloged under National Stock Number 6210-00-519-1978, 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 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 5 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
NSN6210-00-519-1978
Primary Part NumberLH66PW2
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
StatusACTIVE
Style DesignatorROUND FRAME, ROUND LENS TYPE
Lens Light Transmission CharacteristicTRANSPARENT SINGLE LIGHT FIRST POSITION HORIZONTAL
Features ProvidedDIMMING DEVICE
Mounting MethodPANEL LOCATION NOT OTHERWISE SPECIFIED
Panel Accommodation Hole Diameter0.688 INCHES NOMINAL IN
Panel Thickness for Which Designed0.344 INCHES MAXIMUM IN
Mounting MethodSCREW IN LENS
Furnished Items and Quantity1 HEXAGON NUT AND 1 LOCK WASHER
Surface TreatmentNICKEL BODY
Lamp Type Accommodated and Quantity1 INCANDESCENT
Transmitted Light ColorCOLORLESS SINGLE LIGHT FIRST POSITION HORIZONTAL FULL DISPLAY DIVISION A
Lens TypeCONVEX, KNURLED, THREADED SHANK SINGLE LIGHT FIRST POSITION HORIZONTAL
Terminal Type and Quantity2 SOLDER LUG
Lamp Bulb Size DesignatorT-3 1/4
Lens Quantity1
Lamp Base Type AccommodatedMINIATURE BAYONET
Overall Diameter0.828 INCHES NOMINAL IN
Lens Face Surface ConditionSMOOTH SINGLE LIGHT FIRST POSITION HORIZONTAL
Lens Back Surface ConditionSMOOTH SINGLE LIGHT FIRST POSITION HORIZONTAL
MaterialCOPPER ALLOY BODY
Lens ColorCOLORLESS SINGLE LIGHT FIRST POSITION HORIZONTAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6210-00-022-5992 INTERCHANGEABLE
Light,indicator
6210-00-067-8375 INTERCHANGEABLE
Lens,light
6210-00-067-8378 INTERCHANGEABLE
Lens,light
6210-00-617-1491 INTERCHANGEABLE
Light,indicator
6210-00-811-8377 INTERCHANGEABLE
Lens,light
6210-00-842-6939 INTERCHANGEABLE
Lens,light
6210-00-843-5379 INTERCHANGEABLE
Lens,light
6210-00-845-5494 INTERCHANGEABLE
Light,indicator
6210-00-845-5496 INTERCHANGEABLE
Light,indicator
6210-00-865-3450 INTERCHANGEABLE
Lens,light
Cross-Reference Index
Part NumberManufacturer
LH66PW2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-3661/17 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
LH76/3-LC17CN3 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
5207-228-105C0L0LESSDRAKE Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron (USA)
MIL-DTL-3661/8 MIL-DTL-3661/17 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
352-0410-0137-203 Dialight Corporation (USA)
MILL3661 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
30785 The Dewey Electronics Corporation (USA)
2R91P7 Canadian General Electric Co Ltd
375-0410-0137-203 Dialight Corporation (USA)
Related Parts
6210-00-022-5992INTERCHANGEABLE
LIGHT,INDICATOR
6210-00-067-8375INTERCHANGEABLE
LENS,LIGHT
6210-00-067-8378INTERCHANGEABLE
LENS,LIGHT
6210-00-617-1491INTERCHANGEABLE
LIGHT,INDICATOR
6210-00-811-8377INTERCHANGEABLE
LENS,LIGHT
6210-00-842-6939INTERCHANGEABLE
LENS,LIGHT
6210-00-843-5379INTERCHANGEABLE
LENS,LIGHT
6210-00-845-5494INTERCHANGEABLE
LIGHT,INDICATOR
6210-00-845-5496INTERCHANGEABLE
LIGHT,INDICATOR
6210-00-865-3450INTERCHANGEABLE
LENS,LIGHT
6210-00-894-2388INTERCHANGEABLE
LENS,LIGHT
6210-00-914-9543INTERCHANGEABLE
LENS,LIGHT

Frequently Asked Questions

What is NSN 6210-00-519-1978?

NSN 6210-00-519-1978 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: active.

What are the part numbers for NSN 6210-00-519-1978?

NSN 6210-00-519-1978 has 10 cross-referenced part numbers: LH66PW2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-3661/17 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), LH76/3-LC17CN3 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 5207-228-105C0L0LESSDRAKE (Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron), MIL-DTL-3661/8 MIL-DTL-3661/17 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 5 more.

What NSN replaces 6210-00-519-1978?

There are 12 known substitutes for 6210-00-519-1978: 6210-00-022-5992, 6210-00-067-8375, 6210-00-067-8378 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of LH66PW2?

Key specifications for LH66PW2: Special Features: DIMMING DEVICE MECHANICAL SHUTTER; Style Designator: ROUND FRAME, ROUND LENS TYPE; Lens Light Transmission Characteristic: TRANSPARENT SINGLE LIGHT FIRST POSITION HORIZONTAL; Features Provided: DIMMING DEVICE. 23 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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