PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

121-7-204REDLENSLight,indicator

Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron · NSN 6210-00-903-8743 · FSC 6210 · No Item Name Available
Verified by PartsTable
NSN 6210-00-903-8743 — this item is cataloged by the U.S. Government under National Stock Number 6210-00-903-8743. Primary manufacturer part number: 121-7-204REDLENS.
Features
  • Light,indicator — FSC 6210
  • Panel Accommodation Hole Diameter: 0.438 INCHES NOMINAL IN
  • Lens Color: RED SINGLE LIGHT FIRST POSITION HORIZONTAL
  • Lens Light Transmission Characteristic: TRANSLUCENT SINGLE LIGHT FIRST POSITION HORIZONTAL
  • Surface Treatment: NICKEL BODY
  • Lens Type: STOVEPIPE, EXTERNAL THREAD SINGLE LIGHT FIRST POSITION HORIZONTAL
  • Lamp Type Accommodated and Quantity: 1 INCANDESCENT
  • Lens Back Surface Condition: SMOOTH SINGLE LIGHT FIRST POSITION HORIZONTAL
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 6210-00-903-8743, is classified within Federal Supply Class 6210 (No Item Name Available) of the Lighting Fixtures and Lamps group. The primary manufacturer of record is Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6210-00-903-8743
Primary Part Number121-7-204REDLENS
Item NameLight,indicator
FSC / FSG6210 / 62 — No Item Name Available
ManufacturerChicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron
StatusACTIVE
Panel Accommodation Hole Diameter0.438 INCHES NOMINAL IN
Lens ColorRED SINGLE LIGHT FIRST POSITION HORIZONTAL
Lens Light Transmission CharacteristicTRANSLUCENT SINGLE LIGHT FIRST POSITION HORIZONTAL
Surface TreatmentNICKEL BODY
Lens TypeSTOVEPIPE, EXTERNAL THREAD SINGLE LIGHT FIRST POSITION HORIZONTAL
Lamp Type Accommodated and Quantity1 INCANDESCENT
Lens Back Surface ConditionSMOOTH SINGLE LIGHT FIRST POSITION HORIZONTAL
Terminal Type and Quantity2 SOLDER LUG
Furnished Items and Quantity1 LAMP
MaterialCOPPER ALLOY BODY
Mounting MethodPANEL LOCATION NOT OTHERWISE SPECIFIED
Mounting MethodSCREW IN LENS
Style DesignatorROUND FRAME, ROUND LENS TYPE
Lens Face Surface ConditionSMOOTH SINGLE LIGHT FIRST POSITION HORIZONTAL
Panel Thickness for Which Designed0.250 INCHES MAXIMUM IN
Lamp Bulb Size DesignatorT-1/4
Lens Quantity1
Overall Diameter0.641 INCHES NOMINAL IN
Lamp Base Type AccommodatedMIDGET SCREW
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5330-00-253-1091 INTERCHANGEABLE
Gasket
5960-01-011-0568 INTERCHANGEABLE
Electron Tube
7050-01-028-3354G300339-1 INTERCHANGEABLE
Converter,digital to Analog
L3harris Technologies, Inc Div Space & Airborne Systems
6150-01-193-2522 INTERCHANGEABLE
Cable Assembly,power,electrical
Cross-Reference Index
Part NumberManufacturer
8643 Kay Elemetrics Corporation (USA)
121-7-204REDLENS PRIMARY Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron (USA)
5126-022-204RED PRIMARY Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron (USA)
Related Parts
5330-00-253-1091INTERCHANGEABLE
GASKET
5960-01-011-0568INTERCHANGEABLE
ELECTRON TUBE
7050-01-028-3354INTERCHANGEABLE
CONVERTER,DIGITAL TO ANALOG
G300339-1
6150-01-193-2522INTERCHANGEABLE
CABLE ASSEMBLY,POWER,ELECTRICAL

Frequently Asked Questions

What is NSN 6210-00-903-8743?

NSN 6210-00-903-8743 is a Light,indicator, manufactured by Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron, classified under FSC 6210 (No Item Name Available). Status: active.

What are the part numbers for NSN 6210-00-903-8743?

NSN 6210-00-903-8743 has 3 cross-referenced part numbers: 8643 (Kay Elemetrics Corporation), 121-7-204REDLENS (Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron), 5126-022-204RED (Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron).

What NSN replaces 6210-00-903-8743?

There are 4 known substitutes for 6210-00-903-8743: 5330-00-253-1091, 5960-01-011-0568, 7050-01-028-3354 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 121-7-204REDLENS?

Key specifications for 121-7-204REDLENS: Panel Accommodation Hole Diameter: 0.438 INCHES NOMINAL IN; Lens Color: RED SINGLE LIGHT FIRST POSITION HORIZONTAL; Lens Light Transmission Characteristic: TRANSLUCENT SINGLE LIGHT FIRST POSITION HORIZONTAL; Surface Treatment: NICKEL BODY. 20 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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