PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS25257-4FLight,indicator

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 6210-00-988-8595 · FSC 6210 · No Item Name Available
Verified by PartsTable
NSN 6210-00-988-8595 — this item is cataloged by the U.S. Government under National Stock Number 6210-00-988-8595. Primary manufacturer part number: MS25257-4F.
Features
  • Light,indicator — FSC 6210
  • Lens Color: RED SINGLE LIGHT FIRST POSITION HORIZONTAL
  • Panel Accommodation Hole Diameter: 0.469 INCHES NOMINAL IN
  • Overall Diameter: 0.553 INCHES NOMINAL IN
  • Lamp Bulb Size Designator: T-2
  • Lens Quantity: 1
  • Lamp Base Type Accommodated: MIDGET FLANGED
  • Lamp Type Accommodated and Quantity: 1 NEON
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
  • Applications requiring Aluminum Body construction
General Description

The Light,indicator, cataloged under National Stock Number 6210-00-988-8595, 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 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6210-00-988-8595
Primary Part NumberMS25257-4F
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
StatusACTIVE
Lens ColorRED SINGLE LIGHT FIRST POSITION HORIZONTAL
Panel Accommodation Hole Diameter0.469 INCHES NOMINAL IN
Overall Diameter0.553 INCHES NOMINAL IN
Lamp Bulb Size DesignatorT-2
Lens Quantity1
Lamp Base Type AccommodatedMIDGET FLANGED
Lamp Type Accommodated and Quantity1 NEON
Lens Light Transmission CharacteristicTRANSPARENT SINGLE LIGHT FIRST POSITION HORIZONTAL
MaterialALUMINUM BODY
Terminal Type and Quantity2 SOLDER LUG
Style DesignatorROUND FRAME, ROUND LENS TYPE
Lens TypeSTOVEPIPE, EXTERNAL THREAD SINGLE LIGHT FIRST POSITION HORIZONTAL
Panel Thickness for Which Designed0.562 INCHES MAXIMUM IN
Mounting MethodPANEL LOCATION NOT OTHERWISE SPECIFIED
Surface TreatmentANODIZE BODY
Lens Back Surface ConditionSMOOTH SINGLE LIGHT FIRST POSITION HORIZONTAL
Mounting MethodPUSH-IN LENS
Lens Face Surface ConditionSMOOTH SINGLE LIGHT FIRST POSITION HORIZONTAL
Transmitted Light ColorRED SINGLE LIGHT FIRST POSITION HORIZONTAL FULL DISPLAY DIVISION A
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
6210-00-151-5243 INTERCHANGEABLE
Light,indicator
Cross-Reference Index
Part NumberManufacturer
MS25257-4F Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
6210-00-151-5243INTERCHANGEABLE
LIGHT,INDICATOR

Frequently Asked Questions

What is NSN 6210-00-988-8595?

NSN 6210-00-988-8595 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: active.

What are the part numbers for NSN 6210-00-988-8595?

NSN 6210-00-988-8595 has 1 cross-referenced part number: MS25257-4F (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 6210-00-988-8595?

There is 1 known substitute for 6210-00-988-8595: 6210-00-151-5243. Verify interchangeability with system specifications before substitution.

What are the specifications of MS25257-4F?

Key specifications for MS25257-4F: Lens Color: RED SINGLE LIGHT FIRST POSITION HORIZONTAL; Panel Accommodation Hole Diameter: 0.469 INCHES NOMINAL IN; Overall Diameter: 0.553 INCHES NOMINAL IN; Lamp Bulb Size Designator: T-2. 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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