PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21840Disk,clutch,vehicular

Klauer Manufacturing Company · NSN 2520-00-374-9551 · FSC 2520 · No Item Name Available
Verified by PartsTable
NSN 2520-00-374-9551 — this item is cataloged by the U.S. Government under National Stock Number 2520-00-374-9551. Primary manufacturer part number: 21840.
Features
  • Disk,clutch,vehicular — FSC 2520
  • 1 verified cross-reference
  • Primary manufacturer: Klauer Manufacturing Company
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Disk,clutch,vehicular, cataloged under National Stock Number 2520-00-374-9551, is classified within Federal Supply Class 2520 (No Item Name Available) of the Vehicular Equipment Components group. The primary manufacturer of record is Klauer Manufacturing Company. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameDisk,clutch,vehicular
FSC / FSG2520 — No Item Name Available (FSG 25)
ManufacturersKlauer Manufacturing Company (CAGE 33844)
Technical Specifications
ParameterValue
NSN2520-00-374-9551
Primary Part Number21840
Item NameDisk,clutch,vehicular
FSC / FSG2520 / 25 — No Item Name Available
ManufacturerKlauer Manufacturing Company
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5330-00-009-3898 INTERCHANGEABLE
Seal,plain Encased
2520-00-371-31971K6729 INTERCHANGEABLE
Disk,clutch,vehicular
Caterpillar Inc Div Caterpillar Defense
1680-00-944-5671PM21840 INTERCHANGEABLE
Grip Assy,hoist Con
Unison Industries Llc
5985-01-345-8701218-40 INTERCHANGEABLE
Attenuator,fixed
Cinch Connectivity Solutions Inc
6240-01-382-0108F096/741 INTERCHANGEABLE
Lamp,fluorescent
Osram Sylvania Inc
Cross-Reference Index
Part NumberManufacturer
21840 PRIMARY Klauer Manufacturing Company (USA)
Related Parts
5330-00-009-3898INTERCHANGEABLE
SEAL,PLAIN ENCASED
2520-00-371-3197INTERCHANGEABLE
DISK,CLUTCH,VEHICULAR
1K6729
1680-00-944-5671INTERCHANGEABLE
GRIP ASSY,HOIST CON
PM21840
5985-01-345-8701INTERCHANGEABLE
ATTENUATOR,FIXED
218-40
6240-01-382-0108INTERCHANGEABLE
LAMP,FLUORESCENT
F096/741

Frequently Asked Questions

What is NSN 2520-00-374-9551?

NSN 2520-00-374-9551 is a Disk,clutch,vehicular, manufactured by Klauer Manufacturing Company, classified under FSC 2520 (No Item Name Available). Status: active.

What are the part numbers for NSN 2520-00-374-9551?

NSN 2520-00-374-9551 has 1 cross-referenced part number: 21840 (Klauer Manufacturing Company).

What NSN replaces 2520-00-374-9551?

There are 5 known substitutes for 2520-00-374-9551: 5330-00-009-3898, 2520-00-371-3197, 1680-00-944-5671 and 2 more. Verify interchangeability with system specifications before substitution.

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