PartsTable TECHNICAL DATA SHEET

NSN 6540-01-473-3746Government record, cited

Push Button, Switch6540-01-473-3746

NSN 6540-01-473-3746 · NIIN 014733746 · Part number U2-04-0002

Lombart Brothers, Inc Dba Marco Lombart Div Marco Lombart · FSC 6540 — Ophthalmic Instruments, Equipment, and Supplies · FSG 65 — Medical, Dental, and Veterinary Equipment · CAGE 63381

Government record, cited

NSN 6540-01-473-3746 — this item is cataloged by the U.S. Government under National Stock Number 6540-01-473-3746. Manufacturer of record part number: U2-04-0002.

Also searched as 6540-01-473-3746 · 6540014733746 · NIIN 014733746 · 01-473-3746 · FSC 6540 Ophthalmic Instruments, Equipment, and Supplies · CAGE 63381 · U2-04-0002 · 99-0808

Nearby stock numbers ← 6540-01-473-3710 Cover Unit, Lensmete · 6540-01-473-3755 →

Features

Push Button,switch — FSC 6540
1 manufacturer part number on file
Manufacturer of record: Lombart Brothers, Inc Dba Marco Lombart Div Marco Lombart

Identification

NSN: 6540-01-473-3746
NIIN: 014733746
FSC: 6540 — Ophthalmic Instruments, Equipment, and Supplies
FSG: 65 — Medical, Dental, and Veterinary Equipment
Primary part number: U2-04-0002
Manufacturer: Lombart Brothers, Inc Dba Marco Lombart Div Marco Lombart

General Description

The Push Button,switch, cataloged under National Stock Number 6540-01-473-3746, is classified within Federal Supply Class 6540 (Ophthalmic Instruments, Equipment, and Supplies) of the Medical, Dental, and Veterinary Equipment group. The manufacturer of record is Lombart Brothers, Inc Dba Marco Lombart Div Marco Lombart. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications

Parameter	Value
NSN	6540-01-473-3746
Primary Part Number	U2-04-0002
Item Name	Push Button,switch
FSC / FSG	6540 / 65 — Ophthalmic Instruments, Equipment, and Supplies
Manufacturer	Lombart Brothers, Inc Dba Marco Lombart Div Marco Lombart
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X
Unit of Issue	EA

Cross-Reference Index

Part Number	Manufacturer
U2-04-0002 PRIMARY	Lombart Brothers, Inc Dba Marco Lombart Div Marco Lombart (USA)

Reference documents

Reference	Meaning
99-0808	5/1 Secondary reference U.S. Government activity

No interchangeability data on file.

Other items in FSC 6540 — Ophthalmic Instruments, Equipment, and Supplies

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

6540-00-001-0100

6540-00-001-0100 · Item name not on file

6540-00-001-0101

LENS,OPHTHALMIC,SPHERE

6540-00-001-0101

LENS,OPHTHALMIC,SPHERE

6540-00-001-0102

6540-00-001-0102 · Item name not on file

6540-00-001-0103

6540-00-001-0103 · Item name not on file

6540-00-001-0104

6540-00-001-0104 · Item name not on file

6540-00-001-0105

6540-00-001-0105 · Item name not on file

6540-00-001-0106

6540-00-001-0106 · Item name not on file

Frequently Asked Questions

What is NSN 6540-01-473-3746?

NSN 6540-01-473-3746 is a Push Button,switch, manufactured by Lombart Brothers, Inc Dba Marco Lombart Div Marco Lombart, classified under FSC 6540, Ophthalmic Instruments, Equipment, and Supplies. Status: active.

What part numbers are listed for NSN 6540-01-473-3746?

NSN 6540-01-473-3746 has 1 manufacturer part number on file: U2-04-0002 (Lombart Brothers, Inc Dba Marco Lombart Div Marco Lombart).

What are the specifications of U2-04-0002?

Key specifications for U2-04-0002: Part Name Assigned by Controlling Agency: PUSH BUTTON SWITCH END ITEM 6540014730339 LIGHT SLIT OPHTHALMIC; End Item Identification: LIGHT,SLIT,OPHTHALMIC, C/N 99-0781, P/N 1050-G5, NSN 6540-01-473-0339. 0 specifications are documented in the U.S. Government catalog.

Is NSN 6540-01-473-3746 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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