PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-L-3661/29Light,indicator

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6210-01-142-5843 · FSC 6210 · No Item Name Available
Verified by PartsTable
NSN 6210-01-142-5843 — this item is cataloged by the U.S. Government under National Stock Number 6210-01-142-5843. Primary manufacturer part number: MIL-L-3661/29.
Features
  • Light,indicator — FSC 6210
  • Lamp Type Accommodated and Quantity: 1 INCANDESCENT
  • Lens Light Transmission Characteristic: TRANSLUCENT SINGLE LIGHT FIRST POSITION HORIZONTAL
  • Lamp Base Type Accommodated: MIDGET FLANGED
  • Mounting Method: PANEL LOCATION NOT OTHERWISE SPECIFIED
  • Panel Thickness for Which Designed: 0.188 INCHES NOMINAL IN
  • Terminal Type and Quantity: 2 SOLDER LUG
  • Lens Type: STOVEPIPE, SHORT SHANK 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 6210-01-142-5843, 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 16 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. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6210-01-142-5843
Primary Part NumberMIL-L-3661/29
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
Lamp Type Accommodated and Quantity1 INCANDESCENT
Lens Light Transmission CharacteristicTRANSLUCENT SINGLE LIGHT FIRST POSITION HORIZONTAL
Lamp Base Type AccommodatedMIDGET FLANGED
Mounting MethodPANEL LOCATION NOT OTHERWISE SPECIFIED
Panel Thickness for Which Designed0.188 INCHES NOMINAL IN
Terminal Type and Quantity2 SOLDER LUG
Lens TypeSTOVEPIPE, SHORT SHANK SINGLE LIGHT FIRST POSITION HORIZONTAL
Style DesignatorROUND FRAME, ROUND LENS TYPE
Lens Face Surface ConditionSMOOTH SINGLE LIGHT FIRST POSITION HORIZONTAL
Panel Accommodation Hole Diameter0.468 INCHES MINIMUM AND 0.472 INCHES MAXIMUM IN
Mounting MethodSCREW ON LENS
Hazardous Locations/environmental ProtectionDUSTTIGHT
Lamp Bulb Size DesignatorT-1 3/4
Overall Diameter0.553 INCHES MAXIMUM IN
Lens ColorRED SINGLE LIGHT FIRST POSITION HORIZONTAL
Lens Quantity1
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
6210-00-183-0331 INTERCHANGEABLE
Lens,light
6210-00-401-9790162-1472 INTERCHANGEABLE
Lens,light
Dialight Corporation
6210-00-538-0887 INTERCHANGEABLE
Lens,light
6210-01-012-4599 INTERCHANGEABLE
Lens,light
6210-01-111-7707 INTERCHANGEABLE
Lens,light
6210-01-112-7572 INTERCHANGEABLE
Lens,light
6210-01-131-9129 INTERCHANGEABLE
Lens,light
6210-01-144-2791 INTERCHANGEABLE
Light,indicator
6210-01-151-2323 INTERCHANGEABLE
Lens,light
6210-01-270-4596 INTERCHANGEABLE
Lens,light
Cross-Reference Index
Part NumberManufacturer
MIL-L-3661/29 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-3661/5 MIL-DTL-3661/29 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
LH73/1-LC29RT2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-3661/5 AND MIL-L-3661/29 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
6210-00-183-0331INTERCHANGEABLE
LENS,LIGHT
6210-00-401-9790INTERCHANGEABLE
LENS,LIGHT
162-1472
6210-00-538-0887INTERCHANGEABLE
LENS,LIGHT
6210-01-012-4599INTERCHANGEABLE
LENS,LIGHT
6210-01-111-7707INTERCHANGEABLE
LENS,LIGHT
6210-01-112-7572INTERCHANGEABLE
LENS,LIGHT
6210-01-131-9129INTERCHANGEABLE
LENS,LIGHT
6210-01-144-2791INTERCHANGEABLE
LIGHT,INDICATOR
6210-01-151-2323INTERCHANGEABLE
LENS,LIGHT
6210-01-270-4596INTERCHANGEABLE
LENS,LIGHT
6210-01-525-3639INTERCHANGEABLE
LENS,LIGHT

Frequently Asked Questions

What is NSN 6210-01-142-5843?

NSN 6210-01-142-5843 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 6210-01-142-5843?

NSN 6210-01-142-5843 has 5 cross-referenced part numbers: MIL-L-3661/29 (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-3661/5 MIL-DTL-3661/29 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), LH73/1-LC29RT2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-3661/5 AND MIL-L-3661/29 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 6210-01-142-5843?

There are 11 known substitutes for 6210-01-142-5843: 6210-00-183-0331, 6210-00-401-9790, 6210-00-538-0887 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-L-3661/29?

Key specifications for MIL-L-3661/29: Lamp Type Accommodated and Quantity: 1 INCANDESCENT; Lens Light Transmission Characteristic: TRANSLUCENT SINGLE LIGHT FIRST POSITION HORIZONTAL; Lamp Base Type Accommodated: MIDGET FLANGED; Mounting Method: PANEL LOCATION NOT OTHERWISE SPECIFIED. 17 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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