PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

43Headrest,phoropter Unit

Lombart Brothers, Inc Dba Marco Lombart Div Marco Lombart · NSN 6540-01-321-6976 · FSC 6540 · No Item Name Available
Verified by PartsTable
NSN 6540-01-321-6976 — this item is cataloged by the U.S. Government under National Stock Number 6540-01-321-6976. Primary manufacturer part number: 43.
Features
  • Headrest,phoropter Unit — FSC 6540
  • General Characteristics Item Description: FOREHEAD REST; FOR USE ON PHOROPTER UNIT; MDL. RT-1
  • Purchase Description Identification: 63381-43
  • 1 verified cross-reference
  • 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 Headrest,phoropter Unit, cataloged under National Stock Number 6540-01-321-6976, 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 2 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6540-01-321-6976
Primary Part Number43
Item NameHeadrest,phoropter Unit
FSC / FSG6540 / 65 — No Item Name Available
ManufacturerLombart Brothers, Inc Dba Marco Lombart Div Marco Lombart
StatusACTIVE
General Characteristics Item DescriptionFOREHEAD REST; FOR USE ON PHOROPTER UNIT; MDL. RT-1
Purchase Description Identification63381-43
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 2
Socket,caster
5340-01-024-25981007 SUCCESSOR
Key Blank
Ilco Unican Corp Dba Wolf Sales
Cross-Reference Index
Part NumberManufacturer
43 PRIMARY Lombart Brothers, Inc Dba Marco Lombart Div Marco Lombart (USA)
Related Parts
5340-00-567-5665SUCCESSOR
SOCKET,CASTER
5340-01-024-2598SUCCESSOR
KEY BLANK
1007

Frequently Asked Questions

What is NSN 6540-01-321-6976?

NSN 6540-01-321-6976 is a Headrest,phoropter Unit, 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 6540-01-321-6976?

NSN 6540-01-321-6976 has 1 cross-referenced part number: 43 (Lombart Brothers, Inc Dba Marco Lombart Div Marco Lombart).

What NSN replaces 6540-01-321-6976?

There are 2 known substitutes for 6540-01-321-6976: 5340-00-567-5665, 5340-01-024-2598. Verify interchangeability with system specifications before substitution.

What are the specifications of 43?

Key specifications for 43: General Characteristics Item Description: FOREHEAD REST; FOR USE ON PHOROPTER UNIT; MDL. RT-1; Purchase Description Identification: 63381-43; End Item Identification: 6540-00-965-2497; Part Name Assigned by Controlling Agency: HEADREST PHOROPTER UNIT END ITEM NSN 6540-00-965-2497. 4 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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