PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

TP102Square,optical

Hilger and Watts Inc · NSN 6650-00-458-2394 · FSC 6650 · No Item Name Available
Verified by PartsTable
NSN 6650-00-458-2394 — this item is cataloged by the U.S. Government under National Stock Number 6650-00-458-2394. Primary manufacturer part number: TP102.
Features
  • Square,optical — FSC 6650
  • General Characteristics Item Description: STEEL AND GLASS,O/A DIM.,2.188 IN. LG,2.188 IN. W,1.625 IN. THK,APERTURE 1.000 IN. BY 1.000 IN.,A PENTAGONAL PRISM HAVING THE PROPERTY OF DEFLECTING A BEAM OF LIGHT THROUGH A RIGHT ANGLE,IRRESPECTIVE OF THE ANGLE OF THE BEAM TO THE PRISM FACE IN
  • 1 verified cross-reference
  • Primary manufacturer: Hilger and Watts Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Square,optical, cataloged under National Stock Number 6650-00-458-2394, is classified within Federal Supply Class 6650 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Hilger and Watts Inc. Government technical data includes 1 verified specification, 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6650-00-458-2394
Primary Part NumberTP102
Item NameSquare,optical
FSC / FSG6650 / 66 — No Item Name Available
ManufacturerHilger and Watts Inc
StatusACTIVE
General Characteristics Item DescriptionSTEEL AND GLASS,O/A DIM.,2.188 IN. LG,2.188 IN. W,1.625 IN. THK,APERTURE 1.000 IN. BY 1.000 IN.,A PENTAGONAL PRISM HAVING THE PROPERTY OF DEFLECTING A BEAM OF LIGHT THROUGH A RIGHT ANGLE,IRRESPECTIVE OF THE ANGLE OF THE BEAM TO THE PRISM FACE IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5935-00-642-0626 INTERCHANGEABLE
Plug,telephone
4920-01-045-8920TP102 INTERCHANGEABLE
Optical Square
Newpor Spectra Physics Ltd
5950-01-050-6671 INTERCHANGEABLE
Transformer,pulse
6675-01-399-1622TP102 INTERCHANGEABLE
Pen,lettering,freehand
National Imprint Corporation
Cross-Reference Index
Part NumberManufacturer
TP102 Hilger and Watts Inc (USA)
Related Parts
5935-00-642-0626INTERCHANGEABLE
PLUG,TELEPHONE
4920-01-045-8920INTERCHANGEABLE
OPTICAL SQUARE
TP102
5950-01-050-6671INTERCHANGEABLE
TRANSFORMER,PULSE
6675-01-399-1622INTERCHANGEABLE
PEN,LETTERING,FREEHAND
TP102

Frequently Asked Questions

What is NSN 6650-00-458-2394?

NSN 6650-00-458-2394 is a Square,optical, manufactured by Hilger and Watts Inc, classified under FSC 6650 (No Item Name Available). Status: active.

What are the part numbers for NSN 6650-00-458-2394?

NSN 6650-00-458-2394 has 1 cross-referenced part number: TP102 (Hilger and Watts Inc).

What NSN replaces 6650-00-458-2394?

There are 4 known substitutes for 6650-00-458-2394: 5935-00-642-0626, 4920-01-045-8920, 5950-01-050-6671 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of TP102?

Key specifications for TP102: General Characteristics Item Description: STEEL AND GLASS,O/A DIM.,2.188 IN. LG,2.188 IN. W,1.625 IN. THK,APERTURE 1.000 IN. BY 1.000 IN.,A PENTAGONAL PRISM HAVING THE PROPERTY OF DEFLECTING A BEAM OF LIGHT THROUGH A RIGHT ANGLE,IRRESPECTIVE OF THE ANGLE OF THE BEAM TO THE PRISM FACE IN. 1 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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