PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

E101Reticle,optical Instrument

Unertl John Optical Co Inc · NSN 6650-01-459-7155 · FSC 6650 · No Item Name Available
Verified by PartsTable
NSN 6650-01-459-7155 — this item is cataloged by the U.S. Government under National Stock Number 6650-01-459-7155. Primary manufacturer part number: E101.
Features
  • Reticle,optical Instrument — FSC 6650
  • Style Designator: CROSSLINE
  • Diameter: 0.5860 INCHES NOMINAL IN
  • 1 verified cross-reference
  • Primary manufacturer: Unertl John Optical Co Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Reticle,optical Instrument, cataloged under National Stock Number 6650-01-459-7155, is classified within Federal Supply Class 6650 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Unertl John Optical Co Inc. Government technical data includes 2 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6650-01-459-7155
Primary Part NumberE101
Item NameReticle,optical Instrument
FSC / FSG6650 / 66 — No Item Name Available
ManufacturerUnertl John Optical Co Inc
StatusACTIVE
Style DesignatorCROSSLINE
Diameter0.5860 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5985-00-061-0230 INTERCHANGEABLE
Attenuator,variable
3455-00-224-373210305 INTERCHANGEABLE
Cutter,milling,end
Union Butterfield Corp P O Box 9000 Crystal Lake Il 60039
3020-00-249-6210478660R91 INTERCHANGEABLE
Gear,bevel
Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/
5985-00-296-1295 INTERCHANGEABLE
Antenna
2805-00-517-991520012A INTERCHANGEABLE
Valve,poppet,engine
Brinkley Technology Group Llc Dba Hercules Manufacturing
5961-00-560-4233 INTERCHANGEABLE
Transistor
5940-01-399-2465 INTERCHANGEABLE
Terminal,lug
6105-01-437-0493E15D4 INTERCHANGEABLE
Motor,alternating Current
General Electric Co Motor Business Group
5999-01-439-7073E101 INTERCHANGEABLE
Heater,thermal Release
Schneider Electric Usa, Inc.
5999-01-523-5357E101 INTERCHANGEABLE
Switch,disconnect
Koolant Koolers, Inc Dba Schreiber Engineering Corp Div
Cross-Reference Index
Part NumberManufacturer
E101 PRIMARY Unertl John Optical Co Inc (USA)
Related Parts
5985-00-061-0230INTERCHANGEABLE
ATTENUATOR,VARIABLE
3455-00-224-3732INTERCHANGEABLE
CUTTER,MILLING,END
10305
3020-00-249-6210INTERCHANGEABLE
GEAR,BEVEL
478660R91
5985-00-296-1295INTERCHANGEABLE
ANTENNA
2805-00-517-9915INTERCHANGEABLE
VALVE,POPPET,ENGINE
20012A
5961-00-560-4233INTERCHANGEABLE
TRANSISTOR
5940-01-399-2465INTERCHANGEABLE
TERMINAL,LUG
6105-01-437-0493INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
E15D4
5999-01-439-7073INTERCHANGEABLE
HEATER,THERMAL RELEASE
E101
5999-01-523-5357INTERCHANGEABLE
SWITCH,DISCONNECT
E101
5930-01-557-1623INTERCHANGEABLE
SWITCH,TOGGLE
E-101
4940-01-614-4583INTERCHANGEABLE
WATER EVAPORATOR
E-101

Frequently Asked Questions

What is NSN 6650-01-459-7155?

NSN 6650-01-459-7155 is a Reticle,optical Instrument, manufactured by Unertl John Optical Co Inc, classified under FSC 6650 (No Item Name Available). Status: active.

What are the part numbers for NSN 6650-01-459-7155?

NSN 6650-01-459-7155 has 1 cross-referenced part number: E101 (Unertl John Optical Co Inc).

What NSN replaces 6650-01-459-7155?

There are 12 known substitutes for 6650-01-459-7155: 5985-00-061-0230, 3455-00-224-3732, 3020-00-249-6210 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of E101?

Key specifications for E101: Style Designator: CROSSLINE; Diameter: 0.5860 INCHES NOMINAL IN; End Item Identification: SNIPER SCOPE, MODEL C3. 3 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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