PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

PB1Test Set,optical Power

Thorlabs, Inc · NSN 6650-01-668-5458 · FSC 6650 · No Item Name Available
Verified by PartsTable
NSN 6650-01-668-5458 — this item is cataloged by the U.S. Government under National Stock Number 6650-01-668-5458. Primary manufacturer part number: PB1.
Features
  • Test Set,optical Power — FSC 6650
  • Width: 2.48 INCHES NOMINAL IN
  • Diameter: 2.48 INCHES NOMINAL IN
  • Height: 0.40 INCHES NOMINAL IN
  • Material: STEEL CORROSION RESISTING HOUSING
  • 1 verified cross-reference
  • Primary manufacturer: Thorlabs, Inc
Applications
  • Applications requiring Steel Corrosion Resisting Housing construction
General Description

The Test Set,optical Power, cataloged under National Stock Number 6650-01-668-5458, is classified within Federal Supply Class 6650 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Thorlabs, Inc. Government technical data includes 4 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6650-01-668-5458
Primary Part NumberPB1
Item NameTest Set,optical Power
FSC / FSG6650 / 66 — No Item Name Available
ManufacturerThorlabs, Inc
StatusACTIVE
Width2.48 INCHES NOMINAL IN
Diameter2.48 INCHES NOMINAL IN
Height0.40 INCHES NOMINAL IN
MaterialSTEEL CORROSION RESISTING HOUSING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
3130-00-027-594464690-SL INTERCHANGEABLE
Bearing Unit,ball
Altra Industrial Motion Corp.
5930-00-195-94283101-1194 INTERCHANGEABLE
Switch,push
Keysight Technologies Inc
5930-00-359-8880 INTERCHANGEABLE
Switch,push
5210-00-640-6176HPB1 INTERCHANGEABLE
Gage,bearing Clearance
Hastings Manufacturing Co Div Hastings Manufacturing Company
3110-00-820-940550470 INTERCHANGEABLE
Bearing,ball,annular
Badger Fire Protection Inc
5975-00-962-9884 INTERCHANGEABLE
Bushing,electrical Conduit
5930-00-970-6369 INTERCHANGEABLE
Push Button
5975-01-235-3845SM-A-949358-71 INTERCHANGEABLE
Bushing,electrical Conduit
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
6635-01-352-1395PB-1 INTERCHANGEABLE
Powder Blower
Parker Research Corporation
7510-01-548-4303PB-1 INTERCHANGEABLE
Binder,loose-Leaf
Boeing Digital Solutions, Inc.
Cross-Reference Index
Part NumberManufacturer
PB1 PRIMARY Thorlabs, Inc (USA)
Related Parts
3130-00-027-5944INTERCHANGEABLE
BEARING UNIT,BALL
64690-SL
5930-00-195-9428INTERCHANGEABLE
SWITCH,PUSH
3101-1194
5930-00-359-8880INTERCHANGEABLE
SWITCH,PUSH
5210-00-640-6176INTERCHANGEABLE
GAGE,BEARING CLEARANCE
HPB1
3110-00-820-9405INTERCHANGEABLE
BEARING,BALL,ANNULAR
50470
5975-00-962-9884INTERCHANGEABLE
BUSHING,ELECTRICAL CONDUIT
5930-00-970-6369INTERCHANGEABLE
PUSH BUTTON
5975-01-235-3845INTERCHANGEABLE
BUSHING,ELECTRICAL CONDUIT
SM-A-949358-71
6635-01-352-1395INTERCHANGEABLE
POWDER BLOWER
PB-1
7510-01-548-4303INTERCHANGEABLE
BINDER,LOOSE-LEAF
PB-1

Frequently Asked Questions

What is NSN 6650-01-668-5458?

NSN 6650-01-668-5458 is a Test Set,optical Power, manufactured by Thorlabs, Inc, classified under FSC 6650 (No Item Name Available). Status: active.

What are the part numbers for NSN 6650-01-668-5458?

NSN 6650-01-668-5458 has 1 cross-referenced part number: PB1 (Thorlabs, Inc).

What NSN replaces 6650-01-668-5458?

There are 10 known substitutes for 6650-01-668-5458: 3130-00-027-5944, 5930-00-195-9428, 5930-00-359-8880 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of PB1?

Key specifications for PB1: Width: 2.48 INCHES NOMINAL IN; Diameter: 2.48 INCHES NOMINAL IN; Height: 0.40 INCHES NOMINAL IN; Special Features: ACCOMODATES IMPERIAL AND METRIC. 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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