PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILSTD242Light,indicator

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6210-00-899-4205 · FSC 6210 · No Item Name Available
Verified by PartsTable
NSN 6210-00-899-4205 — this item is cataloged by the U.S. Government under National Stock Number 6210-00-899-4205. Primary manufacturer part number: MILSTD242.
Features
  • Light,indicator — FSC 6210
  • Lens Quantity: 1
  • Lens Color: GREEN SINGLE LIGHT FIRST POSITION HORIZONTAL
  • Panel Accommodation Hole Diameter: 0.500 INCHES NOMINAL IN
  • Transmitted Light Color: GREEN SINGLE LIGHT FIRST POSITION HORIZONTAL FULL DISPLAY DIVISION A
  • Features Provided: BLACKOUT DEGREE, PARTIAL AND DIMMING DEVICE
  • Lens Type: CONVEX, KNURLED, THREADED SHANK SINGLE LIGHT FIRST POSITION HORIZONTAL
  • 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 6210-00-899-4205, 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 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6210-00-899-4205
Primary Part NumberMILSTD242
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
Lens Quantity1
Lens ColorGREEN SINGLE LIGHT FIRST POSITION HORIZONTAL
Panel Accommodation Hole Diameter0.500 INCHES NOMINAL IN
Transmitted Light ColorGREEN SINGLE LIGHT FIRST POSITION HORIZONTAL FULL DISPLAY DIVISION A
Features ProvidedBLACKOUT DEGREE, PARTIAL AND DIMMING DEVICE
Lens TypeCONVEX, KNURLED, THREADED SHANK SINGLE LIGHT FIRST POSITION HORIZONTAL
Mounting MethodSCREW IN LENS
Terminal Type and Quantity2 SOLDER LUG
Panel Thickness for Which Designed0.250 INCHES MAXIMUM IN
Lamp Type Accommodated and Quantity1 INCANDESCENT
Lens Light Transmission CharacteristicTRANSLUCENT SINGLE LIGHT FIRST POSITION HORIZONTAL
Style DesignatorROUND FRAME, ROUND LENS TYPE
Surface TreatmentNICKEL BODY
Lens Face Surface ConditionSMOOTH SINGLE LIGHT FIRST POSITION HORIZONTAL
Mounting MethodPANEL LOCATION NOT OTHERWISE SPECIFIED
Lens Back Surface ConditionFROSTED SINGLE LIGHT FIRST POSITION HORIZONTAL
MaterialCOPPER ALLOY BODY
Lamp Bulb Size DesignatorT-1 3/4
Lamp Base Type AccommodatedMIDGET FLANGED
Overall Diameter0.562 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5970-00-556-2924 INTERCHANGEABLE
Insulator,standoff
5960-00-681-0301 INTERCHANGEABLE
Shield,electron Tube
5945-00-964-2419 INTERCHANGEABLE
Relay,thermal
Cross-Reference Index
Part NumberManufacturer
MILSTD242 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
RE22B120-4 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5970-00-556-2924INTERCHANGEABLE
INSULATOR,STANDOFF
5960-00-681-0301INTERCHANGEABLE
SHIELD,ELECTRON TUBE
5945-00-964-2419INTERCHANGEABLE
RELAY,THERMAL

Frequently Asked Questions

What is NSN 6210-00-899-4205?

NSN 6210-00-899-4205 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 6210-00-899-4205?

NSN 6210-00-899-4205 has 2 cross-referenced part numbers: MILSTD242 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), RE22B120-4 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 6210-00-899-4205?

There are 3 known substitutes for 6210-00-899-4205: 5970-00-556-2924, 5960-00-681-0301, 5945-00-964-2419. Verify interchangeability with system specifications before substitution.

What are the specifications of MILSTD242?

Key specifications for MILSTD242: Lens Quantity: 1; Lens Color: GREEN SINGLE LIGHT FIRST POSITION HORIZONTAL; Panel Accommodation Hole Diameter: 0.500 INCHES NOMINAL IN; Transmitted Light Color: GREEN SINGLE LIGHT FIRST POSITION HORIZONTAL FULL DISPLAY DIVISION A. 21 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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