PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

GLASS BACK TORICGlass Back Toric

Opticast Inc · NSN 6540-01-504-0410 · FSC 6540 · No Item Name Available
Verified by PartsTable
NSN 6540-01-504-0410 — this item is cataloged by the U.S. Government under National Stock Number 6540-01-504-0410. Primary manufacturer part number: GLASS BACK TORIC.
Features
  • Glass Back Toric — FSC 6540
  • 3 verified cross-references
  • Primary manufacturer: Opticast Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Glass Back Toric, cataloged under National Stock Number 6540-01-504-0410, is classified within Federal Supply Class 6540 (No Item Name Available) of the Medical, Dental, and Veterinary Equipment group. The primary manufacturer of record is Opticast Inc. This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6540-01-504-0410
Primary Part NumberGLASS BACK TORIC
Item NameGlass Back Toric
FSC / FSG6540 / 65 — No Item Name Available
ManufacturerOpticast Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 1
2805-00-384-0910022381 INTERCHANGEABLE
Cap,engine E,haust
Caterpillar Inc Div Caterpillar Defense
Cross-Reference Index
Part NumberManufacturer
6540NCM021752 Defense Medical Standardization Board (USA)
02-2381 Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia (USA)
GLASS BACK TORIC PRIMARY Opticast Inc (USA)
Related Parts
2805-00-384-0910INTERCHANGEABLE
CAP,ENGINE E,HAUST
022381

Frequently Asked Questions

What is NSN 6540-01-504-0410?

NSN 6540-01-504-0410 is a Glass Back Toric, manufactured by Opticast Inc, classified under FSC 6540 (No Item Name Available). Status: active.

What are the part numbers for NSN 6540-01-504-0410?

NSN 6540-01-504-0410 has 3 cross-referenced part numbers: 6540NCM021752 (Defense Medical Standardization Board), 02-2381 (Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia), GLASS BACK TORIC (Opticast Inc).

What NSN replaces 6540-01-504-0410?

There is 1 known substitute for 6540-01-504-0410: 2805-00-384-0910. Verify interchangeability with system specifications before substitution.

What are the specifications of GLASS BACK TORIC?

Key specifications for GLASS BACK TORIC: Special Features: REPLACEMENT BACK (TORIC) FOR THE OPTICAST MOLD WITH CYLINDER; Part Name Assigned by Controlling Agency: GLASS BACK TORIC FOR THE OPTICAST MOLD WITH CYLINDER MOLDING LENS; End Item Identification: FOR USE NSN 6540-01-504-0426, SYSTEM, MOLDING LENS. 3 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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