PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-L-3661/26Lens,light

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6210-00-140-0326 · FSC 6210 · No Item Name Available
Verified by PartsTable
NSN 6210-00-140-0326 — this item is cataloged by the U.S. Government under National Stock Number 6210-00-140-0326. Primary manufacturer part number: MIL-L-3661/26.
Features
  • Lens,light — FSC 6210
  • Light Transmission Design: TRANSLUCENT LENS
  • Thread Quantity: 32 PER INCH
  • Color: GREEN, IDENTIFICATION LENS
  • Effective Diameter: 0.438 INCHES NOMINAL IN
  • Thread Direction: RIGHT-HAND
  • Mounting Method: EXTERNAL THREAD
  • Material: PLASTIC LENS
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 6210-00-140-0326, 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 6 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: Cancelled.

Technical Specifications
ParameterValue
NSN6210-00-140-0326
Primary Part NumberMIL-L-3661/26
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
StatusCANCELLED
Light Transmission DesignTRANSLUCENT LENS
Thread Quantity32 PER INCH
ColorGREEN, IDENTIFICATION LENS
Effective Diameter0.438 INCHES NOMINAL IN
Thread DirectionRIGHT-HAND
Mounting MethodEXTERNAL THREAD
MaterialPLASTIC LENS
Thread SeriesUNEF
Thread Diameter0.312 INCHES IN
Effective Length0.438 INCHES NOMINAL IN
Surface ConditionSMOOTH FACE
Surface ConditionSMOOTH BACK
Thread Class2A A
Hazardous Locations/environmental ProtectionELECTROMAGNETIC INTERFERENCE SHIELDED AND DUSTTIGHT
Style DesignatorSTOVEPIPE
Mounting Device Quantity1
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
6210-00-140-0327 INTERCHANGEABLE
Lens,light
6210-00-140-0328 INTERCHANGEABLE
Lens,light
6210-00-472-3823 INTERCHANGEABLE
Lens,light
6210-01-037-1265 INTERCHANGEABLE
Light,indicator
Cross-Reference Index
Part NumberManufacturer
MIL-L-3661/26 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
7P39TL Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch (USA)
MIL-DTL-3661/26 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
LC26GN2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
7P39 Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch (USA)
LC26GT2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
6210-00-140-0327INTERCHANGEABLE
LENS,LIGHT
6210-00-140-0328INTERCHANGEABLE
LENS,LIGHT
6210-00-472-3823INTERCHANGEABLE
LENS,LIGHT
6210-01-037-1265INTERCHANGEABLE
LIGHT,INDICATOR

Frequently Asked Questions

What is NSN 6210-00-140-0326?

NSN 6210-00-140-0326 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: cancelled.

What are the part numbers for NSN 6210-00-140-0326?

NSN 6210-00-140-0326 has 6 cross-referenced part numbers: MIL-L-3661/26 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 7P39TL (Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch), MIL-DTL-3661/26 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), LC26GN2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 7P39 (Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch) and 1 more.

What NSN replaces 6210-00-140-0326?

There are 4 known substitutes for 6210-00-140-0326: 6210-00-140-0327, 6210-00-140-0328, 6210-00-472-3823 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-L-3661/26?

Key specifications for MIL-L-3661/26: Light Transmission Design: TRANSLUCENT LENS; Thread Quantity: 32 PER INCH; Overall Length: 0.626 INCHES NOMINAL IN; Color: GREEN, IDENTIFICATION LENS. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6210-00-140-0326 still in active supply?

NSN 6210-00-140-0326 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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