PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-DTL-3661/29Lens,light

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6210-01-012-4599 · FSC 6210 · No Item Name Available
Verified by PartsTable
NSN 6210-01-012-4599 — this item is cataloged by the U.S. Government under National Stock Number 6210-01-012-4599. Primary manufacturer part number: MIL-DTL-3661/29.
Features
  • Lens,light — FSC 6210
  • Thread Series: UNEF
  • Effective Length: 0.423 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN
  • Mounting Device Quantity: 1
  • Surface Condition: SMOOTH BACK
  • Thread Class: 2A A
  • Thread Diameter: 0.312 INCHES IN
  • Thread Direction: RIGHT-HAND
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 6210-01-012-4599, 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 7 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6210-01-012-4599
Primary Part NumberMIL-DTL-3661/29
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
Thread SeriesUNEF
Effective Length0.423 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN
Mounting Device Quantity1
Surface ConditionSMOOTH BACK
Thread Class2A A
Thread Diameter0.312 INCHES IN
Thread DirectionRIGHT-HAND
Style DesignatorSTOVEPIPE
Thread Quantity32 PER INCH
Mounting MethodEXTERNAL THREAD
Effective Diameter0.438 INCHES NOMINAL IN
Surface ConditionSMOOTH FACE
Hazardous Locations/environmental ProtectionDUSTTIGHT
ColorYELLOW, AVIATION LENS
Light Transmission DesignTRANSLUCENT LENS
MaterialPLASTIC LENS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 11
6210-00-183-0331 INTERCHANGEABLE
Lens,light
6210-00-401-9790162-1472 INTERCHANGEABLE
Lens,light
Dialight Corporation
6210-00-538-0887 INTERCHANGEABLE
Lens,light
6210-01-111-7707 INTERCHANGEABLE
Lens,light
6210-01-112-7572 INTERCHANGEABLE
Lens,light
6210-01-131-9129 INTERCHANGEABLE
Lens,light
6210-01-142-5843 INTERCHANGEABLE
Light,indicator
6210-01-144-2791 INTERCHANGEABLE
Light,indicator
6210-01-151-2323 INTERCHANGEABLE
Lens,light
6210-01-270-4596 INTERCHANGEABLE
Lens,light
Cross-Reference Index
Part NumberManufacturer
MIL-DTL-3661/29 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
12P42TL Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch (USA)
131A8044 Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron (USA)
MIL-L-3661/29 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
LC29YT2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
330AT Littelfuse, Inc. (USA)
162-1473 Dialight Corporation (USA)
Related Parts
6210-00-183-0331INTERCHANGEABLE
LENS,LIGHT
6210-00-401-9790INTERCHANGEABLE
LENS,LIGHT
162-1472
6210-00-538-0887INTERCHANGEABLE
LENS,LIGHT
6210-01-111-7707INTERCHANGEABLE
LENS,LIGHT
6210-01-112-7572INTERCHANGEABLE
LENS,LIGHT
6210-01-131-9129INTERCHANGEABLE
LENS,LIGHT
6210-01-142-5843INTERCHANGEABLE
LIGHT,INDICATOR
6210-01-144-2791INTERCHANGEABLE
LIGHT,INDICATOR
6210-01-151-2323INTERCHANGEABLE
LENS,LIGHT
6210-01-270-4596INTERCHANGEABLE
LENS,LIGHT
6210-01-525-3639INTERCHANGEABLE
LENS,LIGHT

Frequently Asked Questions

What is NSN 6210-01-012-4599?

NSN 6210-01-012-4599 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 6210-01-012-4599?

NSN 6210-01-012-4599 has 7 cross-referenced part numbers: MIL-DTL-3661/29 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 12P42TL (Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch), 131A8044 (Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron), MIL-L-3661/29 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), LC29YT2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 2 more.

What NSN replaces 6210-01-012-4599?

There are 11 known substitutes for 6210-01-012-4599: 6210-00-183-0331, 6210-00-401-9790, 6210-00-538-0887 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-DTL-3661/29?

Key specifications for MIL-DTL-3661/29: Thread Series: UNEF; Effective Length: 0.423 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN; Mounting Device Quantity: 1; Surface Condition: SMOOTH BACK. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6210-01-012-4599 still in active supply?

NSN 6210-01-012-4599 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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