PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

L12126Target Unit Assy

Lombart Brothers, Inc Dba Marco Lombart Div Marco Lombart · NSN 6540-01-473-3704 · FSC 6540 · No Item Name Available
Verified by PartsTable
NSN 6540-01-473-3704 — this item is cataloged by the U.S. Government under National Stock Number 6540-01-473-3704. Primary manufacturer part number: L12126.
Features
  • Target Unit Assy — FSC 6540
  • 2 verified cross-references
  • Primary manufacturer: Lombart Brothers, Inc Dba Marco Lombart Div Marco Lombart
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Target Unit Assy, cataloged under National Stock Number 6540-01-473-3704, 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. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6540-01-473-3704
Primary Part NumberL12126
Item NameTarget Unit Assy
FSC / FSG6540 / 65 — No Item Name Available
ManufacturerLombart Brothers, Inc Dba Marco Lombart Div Marco Lombart
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 3
3110-00-142-0146020-009-1C INTERCHANGEABLE
Ball,bearing
Virginia Industries, Inc. Div Hartford Technologies, Inc.
5315-00-663-392199-1451 INTERCHANGEABLE
Pin,straight,headless
Hamilton Sundstrand Corporation
2930-01-538-9734 INTERCHANGEABLE
Clutch,fan,engine
Cross-Reference Index
Part NumberManufacturer
L12126 PRIMARY Lombart Brothers, Inc Dba Marco Lombart Div Marco Lombart (USA)
99-1451 Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia (USA)
Related Parts
3110-00-142-0146INTERCHANGEABLE
BALL,BEARING
020-009-1C
5315-00-663-3921INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
99-1451
2930-01-538-9734INTERCHANGEABLE
CLUTCH,FAN,ENGINE

Frequently Asked Questions

What is NSN 6540-01-473-3704?

NSN 6540-01-473-3704 is a Target Unit Assy, 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 6540-01-473-3704?

NSN 6540-01-473-3704 has 2 cross-referenced part numbers: L12126 (Lombart Brothers, Inc Dba Marco Lombart Div Marco Lombart), 99-1451 (Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia).

What NSN replaces 6540-01-473-3704?

There are 3 known substitutes for 6540-01-473-3704: 3110-00-142-0146, 5315-00-663-3921, 2930-01-538-9734. Verify interchangeability with system specifications before substitution.

What are the specifications of L12126?

Key specifications for L12126: End Item Identification: LENSMETER, C/N 99-1441, P/N 4005, MODEL 201, NSN 6540-01-473-0353; Part Name Assigned by Controlling Agency: TARGET UNIT ASSEMBLY END ITEM 6540014730353 LENSMETER. 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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