PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7028Frame,ophthalmic Trial Lens Set

Lombart Brothers, Inc Dba Marco Lombart Div Marco Lombart · NSN 6540-00-346-2240 · FSC 6540 · No Item Name Available
Verified by PartsTable
NSN 6540-00-346-2240 — this item is cataloged by the U.S. Government under National Stock Number 6540-00-346-2240. Primary manufacturer part number: 7028.
Features
  • Frame,ophthalmic Trial Lens Set — FSC 6540
  • Corneal Sighting Device: INCLUDED
  • Left Circular Scale Range: -140.0 TO 145.0
  • Right Circular Scale Range: -35.0 TO 40.0
  • Accessory Components and Quantity: BOOKLET,INSTRUCTION 2
  • Graduated Nosepiece: INCLUDED
  • Cell Quantity: 3
  • 1 verified cross-reference
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Frame,ophthalmic Trial Lens Set, cataloged under National Stock Number 6540-00-346-2240, 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 Lombart Brothers, Inc Dba Marco Lombart Div Marco Lombart. Government technical data includes 6 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. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6540-00-346-2240
Primary Part Number7028
Item NameFrame,ophthalmic Trial Lens Set
FSC / FSG6540 / 65 — No Item Name Available
ManufacturerLombart Brothers, Inc Dba Marco Lombart Div Marco Lombart
StatusACTIVE
Corneal Sighting DeviceINCLUDED
Left Circular Scale Range-140.0 TO 145.0
Right Circular Scale Range-35.0 TO 40.0
Accessory Components and QuantityBOOKLET,INSTRUCTION 2
Graduated NosepieceINCLUDED
Cell Quantity3
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 10
Motor,alternating Current
5975-00-262-9155 INTERCHANGEABLE
Brace,crossarm
6810-00-281-7476 INTERCHANGEABLE
Potassium Nitrate
5977-00-361-4676HC2660 INTERCHANGEABLE
Brush,electrical Contact
Federal Mogul Corp Sub Wagner Brake Moog Automotive Div
5360-00-664-4277 INTERCHANGEABLE
Spring,helical,compression
6150-00-768-02867028 INTERCHANGEABLE
Cable Assembly,power,electrical,
Spencer Industries Inc
5120-01-095-5592 INTERCHANGEABLE
Wrench,clutch Adjusting
5980-01-318-3138 INTERCHANGEABLE
Display,optoelectronic
8305-01-333-4488Z65800 INTERCHANGEABLE
Cloth,laminated
Zodiac of North America, Inc. Dba Zodiac of North America Inc Div Milpro
6510-01-414-68787028 INTERCHANGEABLE
Bandage,adhesive
Covidien Sales Llc Dba Covidien Sales
Cross-Reference Index
Part NumberManufacturer
7028 PRIMARY Lombart Brothers, Inc Dba Marco Lombart Div Marco Lombart (USA)
Related Parts
6105-01-369-4696SUCCESSOR
MOTOR,ALTERNATING CURRENT
5975-00-262-9155INTERCHANGEABLE
BRACE,CROSSARM
6810-00-281-7476INTERCHANGEABLE
POTASSIUM NITRATE
5977-00-361-4676INTERCHANGEABLE
BRUSH,ELECTRICAL CONTACT
HC2660
5360-00-664-4277INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
6150-00-768-0286INTERCHANGEABLE
CABLE ASSEMBLY,POWER,ELECTRICAL,
7028
5120-01-095-5592INTERCHANGEABLE
WRENCH,CLUTCH ADJUSTING
5980-01-318-3138INTERCHANGEABLE
DISPLAY,OPTOELECTRONIC
8305-01-333-4488INTERCHANGEABLE
CLOTH,LAMINATED
Z65800
6510-01-414-6878INTERCHANGEABLE
BANDAGE,ADHESIVE
7028

Frequently Asked Questions

What is NSN 6540-00-346-2240?

NSN 6540-00-346-2240 is a Frame,ophthalmic Trial Lens Set, manufactured by Lombart Brothers, Inc Dba Marco Lombart Div Marco Lombart, classified under FSC 6540 (No Item Name Available). Status: active.

What are the part numbers for NSN 6540-00-346-2240?

NSN 6540-00-346-2240 has 1 cross-referenced part number: 7028 (Lombart Brothers, Inc Dba Marco Lombart Div Marco Lombart).

What NSN replaces 6540-00-346-2240?

There are 10 known substitutes for 6540-00-346-2240: 6105-01-369-4696, 5975-00-262-9155, 6810-00-281-7476 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7028?

Key specifications for 7028: Corneal Sighting Device: INCLUDED; Part Name Assigned by Controlling Agency: FRAME OPHTHALMIC TRIAL LENS SET W/CORNEAL SIGHTING DEVICE; Left Circular Scale Range: -140.0 TO 145.0; Right Circular Scale Range: -35.0 TO 40.0. 8 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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