PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-DTL-3661/35Lens,light

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6210-01-492-2776 · FSC 6210 · No Item Name Available
Verified by PartsTable
NSN 6210-01-492-2776 — this item is cataloged by the U.S. Government under National Stock Number 6210-01-492-2776. Primary manufacturer part number: MIL-DTL-3661/35.
Features
  • Lens,light — FSC 6210
  • Thread Class: 2A A
  • Thread Quantity: 32 PER INCH
  • Material: PLASTIC LENS
  • Thread Series: UNEF
  • Surface Condition: SMOOTH FACE
  • Effective Diameter: 0.438 INCHES NOMINAL IN
  • Hazardous Locations/environmental Protection: DUSTTIGHT
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
  • Applications requiring Plastic Lens construction
General Description

The Lens,light, cataloged under National Stock Number 6210-01-492-2776, 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 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6210-01-492-2776
Primary Part NumberMIL-DTL-3661/35
Item NameLens,light
FSC / FSG6210 / 62 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Thread Class2A A
Thread Quantity32 PER INCH
MaterialPLASTIC LENS
Thread SeriesUNEF
Surface ConditionSMOOTH FACE
Effective Diameter0.438 INCHES NOMINAL IN
Hazardous Locations/environmental ProtectionDUSTTIGHT
Style DesignatorSTOVEPIPE
ColorBLUE LENS
Light Transmission DesignTRANSPARENT LENS
Surface ConditionSMOOTH BACK
Thread Diameter0.312 INCHES IN
Effective Length0.452 INCHES NOMINAL IN
Specification/standard Data81349-MIL-L-3661/35 GOVERNMENT SPECIFICATION
Mounting MethodEXTERNAL THREAD
Thread DirectionRIGHT-HAND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
6210-00-151-5358 INTERCHANGEABLE
Lens,light
6210-00-176-4954 INTERCHANGEABLE
Lens,light
6210-00-176-4955 INTERCHANGEABLE
Lens,light
6210-00-176-4956 INTERCHANGEABLE
Lens,light
6210-00-183-0511 INTERCHANGEABLE
Lens,light
6210-00-183-0513 INTERCHANGEABLE
Lens,light
6210-00-256-6333 INTERCHANGEABLE
Lens,light
6210-00-256-6342 INTERCHANGEABLE
Lens,light
6210-00-401-9796 INTERCHANGEABLE
Lens,light
6210-00-480-7852 INTERCHANGEABLE
Lens,light
Cross-Reference Index
Part NumberManufacturer
MIL-DTL-3661/35 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M3661/35-LC35B Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-L-3661/35 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
6210-00-151-5358INTERCHANGEABLE
LENS,LIGHT
6210-00-176-4954INTERCHANGEABLE
LENS,LIGHT
6210-00-176-4955INTERCHANGEABLE
LENS,LIGHT
6210-00-176-4956INTERCHANGEABLE
LENS,LIGHT
6210-00-183-0511INTERCHANGEABLE
LENS,LIGHT
6210-00-183-0513INTERCHANGEABLE
LENS,LIGHT
6210-00-256-6333INTERCHANGEABLE
LENS,LIGHT
6210-00-256-6342INTERCHANGEABLE
LENS,LIGHT
6210-00-401-9796INTERCHANGEABLE
LENS,LIGHT
6210-00-480-7852INTERCHANGEABLE
LENS,LIGHT

Frequently Asked Questions

What is NSN 6210-01-492-2776?

NSN 6210-01-492-2776 is a Lens,light, 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 6210-01-492-2776?

NSN 6210-01-492-2776 has 3 cross-referenced part numbers: MIL-DTL-3661/35 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M3661/35-LC35B (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-L-3661/35 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 6210-01-492-2776?

There are 10 known substitutes for 6210-01-492-2776: 6210-00-151-5358, 6210-00-176-4954, 6210-00-176-4955 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-DTL-3661/35?

Key specifications for MIL-DTL-3661/35: Thread Class: 2A A; Thread Quantity: 32 PER INCH; Material: PLASTIC LENS; Overall Length: 0.681 INCHES NOMINAL IN. 19 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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