PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

GSB1Shade,optical Instrument

Leica Geosystems Inc. · NSN 6650-00-997-4331 · FSC 6650 · No Item Name Available
Verified by PartsTable
NSN 6650-00-997-4331 — this item is cataloged by the U.S. Government under National Stock Number 6650-00-997-4331. Primary manufacturer part number: GSB1.
Features
  • Shade,optical Instrument — FSC 6650
  • 2 verified cross-references
  • Primary manufacturer: Leica Geosystems Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Shade,optical Instrument, cataloged under National Stock Number 6650-00-997-4331, is classified within Federal Supply Class 6650 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Leica Geosystems Inc.. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameShade,optical Instrument
FSC / FSG6650 — No Item Name Available (FSG 66)
ManufacturersLeica Geosystems Inc. (CAGE 35643)
Technical Specifications
ParameterValue
NSN6650-00-997-4331
Primary Part NumberGSB1
Item NameShade,optical Instrument
FSC / FSG6650 / 66 — No Item Name Available
ManufacturerLeica Geosystems Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5330-01-100-3075200821 INTERCHANGEABLE
Rubber Strip
Cummins Inc.
5342-01-173-079920082-1 INTERCHANGEABLE
Retainer,door
Actron Manufacturing, Inc. Dba Actron Manufacturing Inc
5950-01-260-8632 INTERCHANGEABLE
Reactor
5935-01-450-8873G8892-20726C5BA INTERCHANGEABLE
Backshell,electrical Connector
Glenair, Inc.
5920-01-622-2565GSB1 INTERCHANGEABLE
Fuse,cartridge
Mersen Usa Ep Corp. Dba Ferraz Shawmut
Cross-Reference Index
Part NumberManufacturer
GSB1 Leica Geosystems Inc. (USA)
200821 Leica Geosystems Inc. (USA)
Related Parts
5330-01-100-3075INTERCHANGEABLE
RUBBER STRIP
200821
5342-01-173-0799INTERCHANGEABLE
RETAINER,DOOR
20082-1
5950-01-260-8632INTERCHANGEABLE
REACTOR
5935-01-450-8873INTERCHANGEABLE
BACKSHELL,ELECTRICAL CONNECTOR
G8892-20726C5BA
5920-01-622-2565INTERCHANGEABLE
FUSE,CARTRIDGE
GSB1

Frequently Asked Questions

What is NSN 6650-00-997-4331?

NSN 6650-00-997-4331 is a Shade,optical Instrument, manufactured by Leica Geosystems Inc., classified under FSC 6650 (No Item Name Available). Status: active.

What are the part numbers for NSN 6650-00-997-4331?

NSN 6650-00-997-4331 has 2 cross-referenced part numbers: GSB1 (Leica Geosystems Inc.), 200821 (Leica Geosystems Inc.).

What NSN replaces 6650-00-997-4331?

There are 5 known substitutes for 6650-00-997-4331: 5330-01-100-3075, 5342-01-173-0799, 5950-01-260-8632 and 2 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com