NSN 6640-01-473-0261 — this item is cataloged by the U.S. Government under National Stock Number 6640-01-473-0261. Manufacturer of record part number: ESP0004.
Also searched as6640-01-473-0261 ·
6640014730261 ·
NIIN 014730261 ·
01-473-0261 ·
FSC 6640 Laboratory Equipment and Supplies · CAGE 17332 · ESP0004 · NC9618537 · 99-1413
The Switch on-Off, cataloged under National Stock Number 6640-01-473-0261, is classified within Federal Supply Class 6640 (Laboratory Equipment and Supplies) of the Instruments and Laboratory Equipment group. The manufacturer of record is Scientific Industries Inc. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
Catalog Facts
Item Name
Switch on-Off
FSC / FSG
6640 — Laboratory Equipment and Supplies (FSG 66)
Manufacturers
Redwood County Telephone Company (CAGE 0B655); Scientific Industries Inc (CAGE 17332)
Technical Specifications
Parameter
Value
NSN
6640-01-473-0261
Primary Part Number
ESP0004
Item Name
Switch on-Off
FSC / FSG
6640 / 66 — Laboratory Equipment and Supplies
Manufacturer
Scientific Industries Inc
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Other items in FSC 6640 — Laboratory Equipment and Supplies
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
6640-00-001-3348
6640-00-001-3348 · Item name not on file
6640-00-001-6670
LID,ANAEROBIC CULTURE APPARATUS
6640-00-001-6868
CONTROLLER,TIME AND TEMPERATURE,
6640-00-001-6871
6640-00-001-6871 · Item name not on file
6640-00-001-8928
6640-00-001-8928 · Item name not on file
6640-00-001-9167
6640-00-001-9167 · Item name not on file
6640-00-001-9168
6640-00-001-9168 · Item name not on file
6640-00-003-4362
6640-00-003-4362 · Item name not on file
Frequently Asked Questions
What is NSN 6640-01-473-0261?
NSN 6640-01-473-0261 is a Switch on-Off, manufactured by Scientific Industries Inc, classified under FSC 6640, Laboratory Equipment and Supplies. Status: active.
What part numbers are listed for NSN 6640-01-473-0261?
NSN 6640-01-473-0261 has 2 manufacturer part numbers on file: NC9618537 (Redwood County Telephone Company), ESP0004 (Scientific Industries Inc).
What are the specifications of ESP0004?
Key specifications for ESP0004: Part Name Assigned by Controlling Agency: SWITCH ON-OF; End Item Identification: FOR USE WITH THE VORTEX MIXER, MODEL G560. 0 specifications are documented in the U.S. Government catalog.
Is NSN 6640-01-473-0261 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). 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.