PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-DTL-3661/9 MIL-DTL-3661/19Light,indicator

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6210-00-844-7447 · FSC 6210 · No Item Name Available
Verified by PartsTable
NSN 6210-00-844-7447 — this item is cataloged by the U.S. Government under National Stock Number 6210-00-844-7447. Primary manufacturer part number: MIL-DTL-3661/9 MIL-DTL-3661/19.
Features
  • Light,indicator — FSC 6210
  • Panel Accommodation Hole Diameter: 0.688 INCHES NOMINAL IN
  • Lens Color: RED SINGLE LIGHT FIRST POSITION HORIZONTAL
  • Lens Light Transmission Characteristic: TRANSPARENT SINGLE LIGHT FIRST POSITION HORIZONTAL
  • Lamp Bulb Size Designator: T-3-1/4
  • Overall Diameter: 0.813 INCHES NOMINAL IN
  • Lamp Base Type Accommodated: MINIATURE BAYONET
  • Lens Quantity: 1
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Light,indicator, cataloged under National Stock Number 6210-00-844-7447, 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 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6210-00-844-7447
Primary Part NumberMIL-DTL-3661/9 MIL-DTL-3661/19
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
Panel Accommodation Hole Diameter0.688 INCHES NOMINAL IN
Lens ColorRED SINGLE LIGHT FIRST POSITION HORIZONTAL
Lens Light Transmission CharacteristicTRANSPARENT SINGLE LIGHT FIRST POSITION HORIZONTAL
Lamp Bulb Size DesignatorT-3-1/4
Overall Diameter0.813 INCHES NOMINAL IN
Lamp Base Type AccommodatedMINIATURE BAYONET
Lens Quantity1
Terminal Type and Quantity2 SOLDER LUG
Mounting MethodSCREW ON LENS
Mounting MethodFLANGE LOCATION NOT OTHERWISE SPECIFIED
Lens TypeDOME, KNURLED, INTERNAL THREAD SINGLE LIGHT FIRST POSITION HORIZONTAL
Lens Back Surface ConditionSMOOTH SINGLE LIGHT FIRST POSITION HORIZONTAL
Lamp Type Accommodated and Quantity1 NEON
Style DesignatorROUND FRAME, ROUND LENS TYPE
Lens Face Surface ConditionSMOOTH SINGLE LIGHT FIRST POSITION HORIZONTAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
6210-00-844-7446 INTERCHANGEABLE
Light,indicator
6210-00-844-7449 INTERCHANGEABLE
Light,indicator
5940-00-901-2040 INTERCHANGEABLE
Terminal,stud
6210-01-003-8646 INTERCHANGEABLE
Light,indicator
6210-01-056-5164 INTERCHANGEABLE
Light,indicator
Cross-Reference Index
Part NumberManufacturer
MIL-DTL-3661/9 MIL-DTL-3661/19 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILL3661 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
LH77LC19RN Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-3661/9 AND MIL-L-3661/19 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
6210-00-844-7446INTERCHANGEABLE
LIGHT,INDICATOR
6210-00-844-7449INTERCHANGEABLE
LIGHT,INDICATOR
5940-00-901-2040INTERCHANGEABLE
TERMINAL,STUD
6210-01-003-8646INTERCHANGEABLE
LIGHT,INDICATOR
6210-01-056-5164INTERCHANGEABLE
LIGHT,INDICATOR

Frequently Asked Questions

What is NSN 6210-00-844-7447?

NSN 6210-00-844-7447 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 6210-00-844-7447?

NSN 6210-00-844-7447 has 4 cross-referenced part numbers: MIL-DTL-3661/9 MIL-DTL-3661/19 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILL3661 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), LH77LC19RN (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-3661/9 AND MIL-L-3661/19 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 6210-00-844-7447?

There are 5 known substitutes for 6210-00-844-7447: 6210-00-844-7446, 6210-00-844-7449, 5940-00-901-2040 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-DTL-3661/9 MIL-DTL-3661/19?

Key specifications for MIL-DTL-3661/9 MIL-DTL-3661/19: Panel Accommodation Hole Diameter: 0.688 INCHES NOMINAL IN; Lens Color: RED SINGLE LIGHT FIRST POSITION HORIZONTAL; Lens Light Transmission Characteristic: TRANSPARENT SINGLE LIGHT FIRST POSITION HORIZONTAL; Lamp Bulb Size Designator: T-3-1/4. 16 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com