PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1Bracket,mounting,phoropter Unit

Lombart Brothers, Inc Dba Marco Lombart Div Marco Lombart · NSN 6540-01-321-6974 · FSC 6540 · No Item Name Available
Verified by PartsTable
NSN 6540-01-321-6974 — this item is cataloged by the U.S. Government under National Stock Number 6540-01-321-6974. Primary manufacturer part number: 1.
Features
  • Bracket,mounting,phoropter Unit — FSC 6540
  • General Characteristics Item Description: FOR USE ON PHOROPTER UNIT MDL. RT-1
  • Purchase Description Identification: 63381-1
  • 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 Bracket,mounting,phoropter Unit, cataloged under National Stock Number 6540-01-321-6974, 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6540-01-321-6974
Primary Part Number1
Item NameBracket,mounting,phoropter Unit
FSC / FSG6540 / 65 — No Item Name Available
ManufacturerLombart Brothers, Inc Dba Marco Lombart Div Marco Lombart
StatusACTIVE
General Characteristics Item DescriptionFOR USE ON PHOROPTER UNIT MDL. RT-1
Purchase Description Identification63381-1
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 7
5306-00-080-349910915209 SUCCESSOR
Bolt,eye
U S Army Tank Automotive Command Amsta-Im-Mm
Bolt,eye
5340-00-290-09731 SUCCESSOR
Cap-Plug,protective,dust and Moi
Caplugs Llc Dba Mokon Div Caplugs
Power Supply
5340-00-497-8670249-1 SUCCESSOR
Snap Hook
Buckles International, Inc.
Bar,extension,pipe Hanger
6530-01-464-5951DLA-5951 SUCCESSOR
Container,medical Evacuation
Creative Logistics Ltd
Cross-Reference Index
Part NumberManufacturer
1 PRIMARY Lombart Brothers, Inc Dba Marco Lombart Div Marco Lombart (USA)
Related Parts
5306-00-080-3499SUCCESSOR
BOLT,EYE
10915209
5306-00-255-4507SUCCESSOR
BOLT,EYE
5340-00-290-0973SUCCESSOR
CAP-PLUG,PROTECTIVE,DUST AND MOI
1
6130-00-428-3747SUCCESSOR
POWER SUPPLY
5340-00-497-8670SUCCESSOR
SNAP HOOK
249-1
5340-00-676-8975SUCCESSOR
BAR,EXTENSION,PIPE HANGER
6530-01-464-5951SUCCESSOR
CONTAINER,MEDICAL EVACUATION
DLA-5951

Frequently Asked Questions

What is NSN 6540-01-321-6974?

NSN 6540-01-321-6974 is a Bracket,mounting,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 6540-01-321-6974?

NSN 6540-01-321-6974 has 1 cross-referenced part number: 1 (Lombart Brothers, Inc Dba Marco Lombart Div Marco Lombart).

What NSN replaces 6540-01-321-6974?

There are 7 known substitutes for 6540-01-321-6974: 5306-00-080-3499, 5306-00-255-4507, 5340-00-290-0973 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1?

Key specifications for 1: End Item Identification: 6540-00-965-2497; General Characteristics Item Description: FOR USE ON PHOROPTER UNIT MDL. RT-1; Purchase Description Identification: 63381-1; Part Name Assigned by Controlling Agency: BRACKET MOUNTING 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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