PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

301221Mirror,optical Instrument

Northrop Grumman Corp Electronic Systems Defensive System Div · NSN 6650-00-005-2145 · FSC 6650 · No Item Name Available
Verified by PartsTable
NSN 6650-00-005-2145 — this item is cataloged by the U.S. Government under National Stock Number 6650-00-005-2145. Primary manufacturer part number: 301221.
Features
  • Mirror,optical Instrument — FSC 6650
  • Reflection Reducing Surface: ONE
  • Material: SILVER REFLECTIVE BACKING
  • Material Document and Classification: MIL-G-174 MIL SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
  • Material: GLASS OPTICAL LOCATION NOT OTHERWISE SPECIFIED
  • Diameter: 4.710 INCHES NOMINAL IN
  • Thickness: 1.071 INCHES NOMINAL IN
  • 2 verified cross-references
Applications
  • Applications requiring Silver Reflective Backing construction
General Description

The Mirror,optical Instrument, cataloged under National Stock Number 6650-00-005-2145, is classified within Federal Supply Class 6650 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Northrop Grumman Corp Electronic Systems Defensive System Div. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6650-00-005-2145
Primary Part Number301221
Item NameMirror,optical Instrument
FSC / FSG6650 / 66 — No Item Name Available
ManufacturerNorthrop Grumman Corp Electronic Systems Defensive System Div
StatusACTIVE
Reflection Reducing SurfaceONE
MaterialSILVER REFLECTIVE BACKING
Material Document and ClassificationMIL-G-174 MIL SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
MaterialGLASS OPTICAL LOCATION NOT OTHERWISE SPECIFIED
Diameter4.710 INCHES NOMINAL IN
Thickness1.071 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5133-00-051-5750 INTERCHANGEABLE
Drill,twist
5340-00-165-7758206-062-834-1 INTERCHANGEABLE
Clamp,loop
Bell Textron Inc
5998-00-217-8105301221 INTERCHANGEABLE
Circuit Card Assembly
Dranetz Technologies Inc
9905-00-690-21168756610 INTERCHANGEABLE
Plate,identification
U S Army Tank Automotive Command Amsta-Im-Mm
5950-01-298-585830122 INTERCHANGEABLE
Transformer,power
Hunzicker Brothers Inc
2540-01-352-3636301221 INTERCHANGEABLE
Support,seat,vehicular
Seats Inc Div Seats Incorporated
Cross-Reference Index
Part NumberManufacturer
301221 PRIMARY Northrop Grumman Corp Electronic Systems Defensive System Div (USA)
301221 Cvi Laser Llc Dba Cvi Optical Components (USA)
Related Parts
5133-00-051-5750INTERCHANGEABLE
DRILL,TWIST
5340-00-165-7758INTERCHANGEABLE
CLAMP,LOOP
206-062-834-1
5998-00-217-8105INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
301221
9905-00-690-2116INTERCHANGEABLE
PLATE,IDENTIFICATION
8756610
5950-01-298-5858INTERCHANGEABLE
TRANSFORMER,POWER
30122
2540-01-352-3636INTERCHANGEABLE
SUPPORT,SEAT,VEHICULAR
301221

Frequently Asked Questions

What is NSN 6650-00-005-2145?

NSN 6650-00-005-2145 is a Mirror,optical Instrument, manufactured by Northrop Grumman Corp Electronic Systems Defensive System Div, classified under FSC 6650 (No Item Name Available). Status: active.

What are the part numbers for NSN 6650-00-005-2145?

NSN 6650-00-005-2145 has 2 cross-referenced part numbers: 301221 (Northrop Grumman Corp Electronic Systems Defensive System Div), 301221 (Cvi Laser Llc Dba Cvi Optical Components).

What NSN replaces 6650-00-005-2145?

There are 6 known substitutes for 6650-00-005-2145: 5133-00-051-5750, 5340-00-165-7758, 5998-00-217-8105 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 301221?

Key specifications for 301221: Reflection Reducing Surface: ONE; Material: SILVER REFLECTIVE BACKING; Material Document and Classification: MIL-G-174 MIL SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED; Material: GLASS OPTICAL LOCATION NOT OTHERWISE SPECIFIED. 6 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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