PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

321GNLens,light

Littelfuse, Inc. · NSN 6210-00-045-5499 · FSC 6210 · No Item Name Available
Verified by PartsTable
NSN 6210-00-045-5499 — this item is cataloged by the U.S. Government under National Stock Number 6210-00-045-5499. Primary manufacturer part number: 321GN.
Features
  • Lens,light — FSC 6210
  • Material: COPPER ALLOY HOLDER
  • Color: GREEN, AVIATION LENS
  • Hazardous Locations/environmental Protection: DUSTTIGHT
  • Light Transmission Design: TRANSPARENT LENS
  • Thread Series: UNEF
  • Style Designator: FLAT
  • Holder Surface Treatment: NICKEL
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
  • Applications requiring Copper Alloy Holder construction
General Description

The Lens,light, cataloged under National Stock Number 6210-00-045-5499, is classified within Federal Supply Class 6210 (No Item Name Available) of the Lighting Fixtures and Lamps group. The primary manufacturer of record is Littelfuse, Inc.. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 6 manufacturers, 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
NSN6210-00-045-5499
Primary Part Number321GN
Item NameLens,light
FSC / FSG6210 / 62 — No Item Name Available
ManufacturerLittelfuse, Inc.
StatusACTIVE
MaterialCOPPER ALLOY HOLDER
ColorGREEN, AVIATION LENS
Hazardous Locations/environmental ProtectionDUSTTIGHT
Light Transmission DesignTRANSPARENT LENS
Thread SeriesUNEF
Style DesignatorFLAT
Holder Surface TreatmentNICKEL
Thread Diameter0.312 INCHES IN
Surface ConditionSMOOTH BACK
Overall Diameter0.562 INCHES NOMINAL IN
Effective Diameter0.469 INCHES NOMINAL IN
MaterialPLASTIC LENS
ColorNICKEL HOLDER
Surface ConditionSMOOTH FACE
Mounting MethodEXTERNAL THREAD
Mounting Device Quantity1
Thread Quantity32 PER INCH
Thread Class2A A
Thread DirectionRIGHT-HAND
Features ProvidedROTATABLE ALIGNMENT CAPABILITY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
6210-00-050-0582 INTERCHANGEABLE
Lens,light
Cross-Reference Index
Part NumberManufacturer
321GN Littelfuse, Inc. (USA)
RM22BGC Genisco Filter Corp (USA)
LC11GN2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
LC11GN2 Dialight Corporation (USA)
7P35 Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch (USA)
MIL-L-3661/11 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
32NGN Littelfuse, Inc. (USA)
178-0332-500 Dialight Corporation (USA)
RM22BGC Spectrum Control, Inc. Div Api Technologies - Eis/wesson (USA)
Related Parts
6210-00-050-0582INTERCHANGEABLE
LENS,LIGHT

Frequently Asked Questions

What is NSN 6210-00-045-5499?

NSN 6210-00-045-5499 is a Lens,light, manufactured by Littelfuse, Inc., classified under FSC 6210 (No Item Name Available). Status: active.

What are the part numbers for NSN 6210-00-045-5499?

NSN 6210-00-045-5499 has 9 cross-referenced part numbers: 321GN (Littelfuse, Inc.), RM22BGC (Genisco Filter Corp), LC11GN2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), LC11GN2 (Dialight Corporation), 7P35 (Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch) and 4 more.

What NSN replaces 6210-00-045-5499?

There is 1 known substitute for 6210-00-045-5499: 6210-00-050-0582. Verify interchangeability with system specifications before substitution.

What are the specifications of 321GN?

Key specifications for 321GN: Material: COPPER ALLOY HOLDER; Color: GREEN, AVIATION LENS; Hazardous Locations/environmental Protection: DUSTTIGHT; Light Transmission Design: TRANSPARENT LENS. 21 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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