PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21-640Switch,centrifugal

Pollak Joseph Corp · NSN 5930-01-674-5670 · FSC 5930 · No Item Name Available
Verified by PartsTable
NSN 5930-01-674-5670 — this item is cataloged by the U.S. Government under National Stock Number 5930-01-674-5670. Primary manufacturer part number: 21-640.
Features
  • Switch,centrifugal — FSC 5930
  • 3 verified cross-references
  • Primary manufacturer: Pollak Joseph Corp
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Switch,centrifugal, cataloged under National Stock Number 5930-01-674-5670, is classified within Federal Supply Class 5930 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Pollak Joseph Corp. This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameSwitch,centrifugal
FSC / FSG5930 — No Item Name Available (FSG 59)
ManufacturersOshkosh Defense Llc (CAGE 75Q65); Pollak Joseph Corp (CAGE 77326); U S Army Tank Automotive Command Amsta-Im-Mm (CAGE 19207)
Technical Specifications
ParameterValue
NSN5930-01-674-5670
Primary Part Number21-640
Item NameSwitch,centrifugal
FSC / FSG5930 / 59 — No Item Name Available
ManufacturerPollak Joseph Corp
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5310-00-209-5116 INTERCHANGEABLE
Washer,lock
5355-00-604-37401168879 INTERCHANGEABLE
Knob
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
4730-00-736-925621640 INTERCHANGEABLE
Packing Nut
Schneider Electric Systems Usa Inc
5330-01-255-0136638-05-508-0008 INTERCHANGEABLE
Seal,plain
Renold Inc Div Ajax
3040-01-294-3267 INTERCHANGEABLE
Worm Shaft
5330-01-328-432721640 INTERCHANGEABLE
Retainer,packing
Parker Hannifin Corporation Div Hydraulic Systems Division
Cross-Reference Index
Part NumberManufacturer
3686489 Oshkosh Defense Llc (USA)
21-640 PRIMARY Pollak Joseph Corp (USA)
12601861 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
Related Parts
5310-00-209-5116INTERCHANGEABLE
WASHER,LOCK
5355-00-604-3740INTERCHANGEABLE
KNOB
1168879
4730-00-736-9256INTERCHANGEABLE
PACKING NUT
21640
5330-01-255-0136INTERCHANGEABLE
SEAL,PLAIN
638-05-508-0008
3040-01-294-3267INTERCHANGEABLE
WORM SHAFT
5330-01-328-4327INTERCHANGEABLE
RETAINER,PACKING
21640

Frequently Asked Questions

What is NSN 5930-01-674-5670?

NSN 5930-01-674-5670 is a Switch,centrifugal, manufactured by Pollak Joseph Corp, classified under FSC 5930 (No Item Name Available). Status: active.

What are the part numbers for NSN 5930-01-674-5670?

NSN 5930-01-674-5670 has 3 cross-referenced part numbers: 3686489 (Oshkosh Defense Llc), 21-640 (Pollak Joseph Corp), 12601861 (U S Army Tank Automotive Command Amsta-Im-Mm).

What NSN replaces 5930-01-674-5670?

There are 6 known substitutes for 5930-01-674-5670: 5310-00-209-5116, 5355-00-604-3740, 4730-00-736-9256 and 3 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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