PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-L-3661Light,indicator

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6210-00-810-7583 · FSC 6210 · No Item Name Available
Verified by PartsTable
NSN 6210-00-810-7583 — this item is cataloged by the U.S. Government under National Stock Number 6210-00-810-7583. Primary manufacturer part number: MIL-L-3661.
Features
  • Light,indicator — FSC 6210
  • Lens Color: GREEN SINGLE LIGHT FIRST POSITION HORIZONTAL
  • Lamp Bulb Size Designator: T-3 1/4
  • Mounting Method: SCREW ON LENS
  • Mounting Method: PANEL LOCATION NOT OTHERWISE SPECIFIED
  • Lens Face Surface Condition: SMOOTH SINGLE LIGHT FIRST POSITION HORIZONTAL
  • Lens Light Transmission Characteristic: TRANSPARENT SINGLE LIGHT FIRST POSITION HORIZONTAL
  • Style Designator: ROUND FRAME, ROUND LENS TYPE
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Light,indicator, cataloged under National Stock Number 6210-00-810-7583, 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 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6210-00-810-7583
Primary Part NumberMIL-L-3661
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
Lens ColorGREEN SINGLE LIGHT FIRST POSITION HORIZONTAL
Lamp Bulb Size DesignatorT-3 1/4
Mounting MethodSCREW ON LENS
Mounting MethodPANEL LOCATION NOT OTHERWISE SPECIFIED
Lens Face Surface ConditionSMOOTH SINGLE LIGHT FIRST POSITION HORIZONTAL
Lens Light Transmission CharacteristicTRANSPARENT SINGLE LIGHT FIRST POSITION HORIZONTAL
Style DesignatorROUND FRAME, ROUND LENS TYPE
Lamp Type Accommodated and Quantity1 INCANDESCENT
Terminal Type and Quantity2 SOLDER LUG
Features ProvidedDIMMING DEVICE AND BLACKOUT DEGREE, PARTIAL
Lens TypeCONVEX, KNURLED, THREADED SHANK SINGLE LIGHT FIRST POSITION HORIZONTAL
Nondefinitive Spec/std DataLH75LC18GN TYPE
Lens Back Surface ConditionSMOOTH SINGLE LIGHT FIRST POSITION HORIZONTAL
Lens Quantity1
Lamp Base Type AccommodatedMINIATURE BAYONET
Panel Accommodation Hole Diameter0.688 INCHES MINIMUM AND 0.694 INCHES MAXIMUM IN
Overall Diameter0.780 INCHES MINIMUM AND 0.840 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
6210-00-056-9192 INTERCHANGEABLE
Lens,light
6210-00-067-8370 INTERCHANGEABLE
Lens,light
6210-00-067-8371 INTERCHANGEABLE
Lens,light
6210-00-067-8372 INTERCHANGEABLE
Lens,light
6210-00-080-1058 INTERCHANGEABLE
Light,indicator
6210-00-299-6724 INTERCHANGEABLE
Light,indicator
6210-00-857-2338 INTERCHANGEABLE
Lens,light
6210-00-892-2380 INTERCHANGEABLE
Light,indicator
6210-00-996-0675202-0410-0113-203 INTERCHANGEABLE
Light,indicator
Dialight Corporation
6210-01-071-8219 INTERCHANGEABLE
Light,indicator
Cross-Reference Index
Part NumberManufacturer
MIL-L-3661 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS90288-3 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
LH76/3-LC18GN3 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-3661/18 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
LH75LC18GN Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-3661/8 MIL-DTL-3661/18 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
353-0410-0132-203 Dialight Corporation (USA)
Related Parts
6210-00-056-9192INTERCHANGEABLE
LENS,LIGHT
6210-00-067-8370INTERCHANGEABLE
LENS,LIGHT
6210-00-067-8371INTERCHANGEABLE
LENS,LIGHT
6210-00-067-8372INTERCHANGEABLE
LENS,LIGHT
6210-00-080-1058INTERCHANGEABLE
LIGHT,INDICATOR
6210-00-299-6724INTERCHANGEABLE
LIGHT,INDICATOR
6210-00-857-2338INTERCHANGEABLE
LENS,LIGHT
6210-00-892-2380INTERCHANGEABLE
LIGHT,INDICATOR
6210-00-996-0675INTERCHANGEABLE
LIGHT,INDICATOR
202-0410-0113-203
6210-01-071-8219INTERCHANGEABLE
LIGHT,INDICATOR

Frequently Asked Questions

What is NSN 6210-00-810-7583?

NSN 6210-00-810-7583 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 6210-00-810-7583?

NSN 6210-00-810-7583 has 7 cross-referenced part numbers: MIL-L-3661 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MS90288-3 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), LH76/3-LC18GN3 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-3661/18 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), LH75LC18GN (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 2 more.

What NSN replaces 6210-00-810-7583?

There are 10 known substitutes for 6210-00-810-7583: 6210-00-056-9192, 6210-00-067-8370, 6210-00-067-8371 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-L-3661?

Key specifications for MIL-L-3661: Lens Color: GREEN SINGLE LIGHT FIRST POSITION HORIZONTAL; Lamp Bulb Size Designator: T-3 1/4; Mounting Method: SCREW ON LENS; Special Features: DIMMING DEVICE TYPE,MECHANICAL SHUTTER; MTG HDWE INCLUDED. 19 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6210-00-810-7583 still in active supply?

NSN 6210-00-810-7583 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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