PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

TP102Optical Square

Newpor Spectra Physics Ltd · NSN 4920-01-045-8920 · FSC 4920 · No Item Name Available
Verified by PartsTable
NSN 4920-01-045-8920 — this item is cataloged by the U.S. Government under National Stock Number 4920-01-045-8920. Primary manufacturer part number: TP102.
Features
  • Optical Square — FSC 4920
  • Functional Description: USED WITH 18190000165 FIXTURE DURING MAINTENANCE
  • 1 verified cross-reference
  • Primary manufacturer: Newpor Spectra Physics Ltd
Applications
  • Maintenance depot operations
  • Field repair and servicing
  • Vehicle maintenance facilities
General Description

The Optical Square, cataloged under National Stock Number 4920-01-045-8920, is classified within Federal Supply Class 4920 (No Item Name Available) of the Maintenance and Repair Shop Equipment group. The primary manufacturer of record is Newpor Spectra Physics Ltd. 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
NSN4920-01-045-8920
Primary Part NumberTP102
Item NameOptical Square
FSC / FSG4920 / 49 — No Item Name Available
ManufacturerNewpor Spectra Physics Ltd
StatusACTIVE
Functional DescriptionUSED WITH 18190000165 FIXTURE DURING MAINTENANCE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
6650-00-458-2394 INTERCHANGEABLE
Square,optical
5935-00-642-0626 INTERCHANGEABLE
Plug,telephone
5950-01-050-6671 INTERCHANGEABLE
Transformer,pulse
6675-01-399-1622TP102 INTERCHANGEABLE
Pen,lettering,freehand
National Imprint Corporation
Cross-Reference Index
Part NumberManufacturer
TP102 PRIMARY Newpor Spectra Physics Ltd (GBR)
Related Parts
6650-00-458-2394INTERCHANGEABLE
SQUARE,OPTICAL
5935-00-642-0626INTERCHANGEABLE
PLUG,TELEPHONE
5950-01-050-6671INTERCHANGEABLE
TRANSFORMER,PULSE
6675-01-399-1622INTERCHANGEABLE
PEN,LETTERING,FREEHAND
TP102

Frequently Asked Questions

What is NSN 4920-01-045-8920?

NSN 4920-01-045-8920 is a Optical Square, manufactured by Newpor Spectra Physics Ltd, classified under FSC 4920 (No Item Name Available). Status: active.

What are the part numbers for NSN 4920-01-045-8920?

NSN 4920-01-045-8920 has 1 cross-referenced part number: TP102 (Newpor Spectra Physics Ltd).

What NSN replaces 4920-01-045-8920?

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

What are the specifications of TP102?

Key specifications for TP102: Part Name Assigned by Controlling Agency: OPTICAL SQUARE; Functional Description: USED WITH 18190000165 FIXTURE DURING MAINTENANCE. 2 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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