PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A6567CDisk,clutch,vehicular

Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic · NSN 2520-00-931-4638 · FSC 2520 · No Item Name Available
Verified by PartsTable
NSN 2520-00-931-4638 — this item is cataloged by the U.S. Government under National Stock Number 2520-00-931-4638. Primary manufacturer part number: A6567C.
Features
  • Disk,clutch,vehicular — FSC 2520
  • Outside Diameter: 7.995 INCHES MINIMUM AND 8.005 INCHES MAXIMUM IN
  • Disk Type: INTERNAL TEETH
  • Flexibility: RIGID
  • Disk Material: STEEL
  • Teeth Quantity Per Disk: 40
  • Design Type: DRY
  • 3 verified cross-references
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Disk,clutch,vehicular, cataloged under National Stock Number 2520-00-931-4638, is classified within Federal Supply Class 2520 (No Item Name Available) of the Vehicular Equipment Components group. The primary manufacturer of record is Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2520-00-931-4638
Primary Part NumberA6567C
Item NameDisk,clutch,vehicular
FSC / FSG2520 / 25 — No Item Name Available
ManufacturerTwin Disc, Incorporated Dba Twin Disc Mid-Atlantic
StatusACTIVE
Outside Diameter7.995 INCHES MINIMUM AND 8.005 INCHES MAXIMUM IN
Disk TypeINTERNAL TEETH
FlexibilityRIGID
Disk MaterialSTEEL
Teeth Quantity Per Disk40
Design TypeDRY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5930-00-777-2285A6567 INTERCHANGEABLE
Plate,switch
Simmonds Precision Products Inc
4820-00-780-6877A6567 INTERCHANGEABLE
Valve,safety Relief
Stewart Avionics Inc
5310-01-149-9548A-6578 INTERCHANGEABLE
Nut
Anderson Greenwood Lp Dba Anderson Greenwood Crosby
Cross-Reference Index
Part NumberManufacturer
A6567A Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
A6567 Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
A6567C PRIMARY Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
Related Parts
5930-00-777-2285INTERCHANGEABLE
PLATE,SWITCH
A6567
4820-00-780-6877INTERCHANGEABLE
VALVE,SAFETY RELIEF
A6567
5310-01-149-9548INTERCHANGEABLE
NUT
A-6578

Frequently Asked Questions

What is NSN 2520-00-931-4638?

NSN 2520-00-931-4638 is a Disk,clutch,vehicular, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 2520 (No Item Name Available). Status: active.

What are the part numbers for NSN 2520-00-931-4638?

NSN 2520-00-931-4638 has 3 cross-referenced part numbers: A6567A (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic), A6567 (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic), A6567C (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic).

What NSN replaces 2520-00-931-4638?

There are 3 known substitutes for 2520-00-931-4638: 5930-00-777-2285, 4820-00-780-6877, 5310-01-149-9548. Verify interchangeability with system specifications before substitution.

What are the specifications of A6567C?

Key specifications for A6567C: Outside Diameter: 7.995 INCHES MINIMUM AND 8.005 INCHES MAXIMUM IN; Disk Type: INTERNAL TEETH; Flexibility: RIGID; Disk Material: STEEL. 6 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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