PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS25257-2Light,indicator

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 6210-00-855-3100 · FSC 6210 · No Item Name Available
Verified by PartsTable
NSN 6210-00-855-3100 — this item is cataloged by the U.S. Government under National Stock Number 6210-00-855-3100. Primary manufacturer part number: MS25257-2.
Features
  • Light,indicator — FSC 6210
  • Panel Accommodation Hole Diameter: 0.469 INCHES NOMINAL IN
  • Lens Color: YELLOW, AVIATION SINGLE LIGHT FIRST POSITION HORIZONTAL
  • Lamp Base Type Accommodated: MIDGET FLANGED
  • Lamp Bulb Size Designator: T-2
  • Lens Quantity: 1
  • Overall Diameter: 0.574 INCHES MINIMUM AND 0.614 INCHES MAXIMUM IN
  • Hazardous Locations/environmental Protection: WATERTIGHT
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
  • Applications requiring Plastic Body construction
General Description

The Light,indicator, cataloged under National Stock Number 6210-00-855-3100, 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 Standards Promulgated by Military Departments 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 9 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6210-00-855-3100
Primary Part NumberMS25257-2
Item NameLight,indicator
FSC / FSG6210 / 62 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Panel Accommodation Hole Diameter0.469 INCHES NOMINAL IN
Lens ColorYELLOW, AVIATION SINGLE LIGHT FIRST POSITION HORIZONTAL
Lamp Base Type AccommodatedMIDGET FLANGED
Lamp Bulb Size DesignatorT-2
Lens Quantity1
Overall Diameter0.574 INCHES MINIMUM AND 0.614 INCHES MAXIMUM IN
Hazardous Locations/environmental ProtectionWATERTIGHT
Lamp Type Accommodated and Quantity1 NEON
Panel Thickness for Which Designed0.562 INCHES MAXIMUM IN
Mounting MethodSCREW IN LENS
MaterialPLASTIC BODY
Lens TypeSTOVEPIPE, EXTERNAL THREAD SINGLE LIGHT FIRST POSITION HORIZONTAL
Mounting MethodPANEL LOCATION NOT OTHERWISE SPECIFIED
Style DesignatorROUND FRAME, ROUND LENS TYPE
Furnished Items and Quantity1 HEXAGON NUT AND 1 LOCK WASHER
Lens Light Transmission CharacteristicTRANSLUCENT SINGLE LIGHT FIRST POSITION HORIZONTAL
Transmitted Light ColorYELLOW, AVIATION SINGLE LIGHT FIRST POSITION HORIZONTAL FULL DISPLAY DIVISION A
Lens Back Surface ConditionSMOOTH SINGLE LIGHT FIRST POSITION HORIZONTAL
Terminal Type and Quantity2 SOLDER LUG
Lens Face Surface ConditionSMOOTH SINGLE LIGHT FIRST POSITION HORIZONTAL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
6210-00-951-9983 INTERCHANGEABLE
Lens,light
6150-01-651-483840664-2 INTERCHANGEABLE
Cable Assembly,special Purpose,e
United States Department of the Navy Dba Naval Surface Warfare Center Panama City
Cross-Reference Index
Part NumberManufacturer
MS25257-2 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
406642 Bae Systems (operations) Limited (GBR)
RNA-64B5-RN120AC Spectrum Control, Inc. Div Api Technologies - Eis/wesson (USA)
5133-048-703YELLOW Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron (USA)
RNA-64B5-RN120AC Genisco Filter Corp (USA)
137-8836-933 Dialight Corporation (USA)
L15005BAM Safran Power Usa, Llc (USA)
137-8836-0933-552 Dialight Corporation (USA)
7015-17-P3 Vemaline Products Inc Dba Handles Unlimited Div Handles Unlimited (USA)
Related Parts
6210-00-951-9983INTERCHANGEABLE
LENS,LIGHT
6150-01-651-4838INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
40664-2

Frequently Asked Questions

What is NSN 6210-00-855-3100?

NSN 6210-00-855-3100 is a Light,indicator, manufactured by Military Standards Promulgated by Military Departments 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 6210-00-855-3100?

NSN 6210-00-855-3100 has 9 cross-referenced part numbers: MS25257-2 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 406642 (Bae Systems (operations) Limited), RNA-64B5-RN120AC (Spectrum Control, Inc. Div Api Technologies - Eis/wesson), 5133-048-703YELLOW (Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron), RNA-64B5-RN120AC (Genisco Filter Corp) and 4 more.

What NSN replaces 6210-00-855-3100?

There are 2 known substitutes for 6210-00-855-3100: 6210-00-951-9983, 6150-01-651-4838. Verify interchangeability with system specifications before substitution.

What are the specifications of MS25257-2?

Key specifications for MS25257-2: Panel Accommodation Hole Diameter: 0.469 INCHES NOMINAL IN; Lens Color: YELLOW, AVIATION SINGLE LIGHT FIRST POSITION HORIZONTAL; Lamp Base Type Accommodated: MIDGET FLANGED; Lamp Bulb Size Designator: T-2. 22 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6210-00-855-3100 still in active supply?

NSN 6210-00-855-3100 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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