PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A1537Disk,clutch,vehicular

Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic · NSN 2520-00-426-1722 · FSC 2520 · No Item Name Available
Verified by PartsTable
NSN 2520-00-426-1722 — this item is cataloged by the U.S. Government under National Stock Number 2520-00-426-1722. Primary manufacturer part number: A1537.
Features
  • Disk,clutch,vehicular — FSC 2520
  • Disk Type: EXTERNAL TEETH
  • Disk Material: FIBER
  • Flexibility: RIGID
  • Design Type: WET
  • Teeth Quantity Per Disk: 30
  • 4 verified cross-references
  • Primary manufacturer: Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Disk,clutch,vehicular, cataloged under National Stock Number 2520-00-426-1722, 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 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2520-00-426-1722
Primary Part NumberA1537
Item NameDisk,clutch,vehicular
FSC / FSG2520 / 25 — No Item Name Available
ManufacturerTwin Disc, Incorporated Dba Twin Disc Mid-Atlantic
StatusACTIVE
Disk TypeEXTERNAL TEETH
Disk MaterialFIBER
FlexibilityRIGID
Design TypeWET
Teeth Quantity Per Disk30
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
8455-00-137-2562 INTERCHANGEABLE
Insignia,shoulder Sleeve
4730-00-343-695572-30 3-4 INTERCHANGEABLE
Strainer,sediment
Kraissl Co Inc the
8455-00-741-6066 INTERCHANGEABLE
Insignia,shoulder Sleeve
8455-01-528-9421 INTERCHANGEABLE
Insignia,shoulder Sleeve
8455-01-654-1683 INTERCHANGEABLE
Insignia,shoulder Sleeve
8455-01-699-3470 INTERCHANGEABLE
Insignia,shoulder Sleeve
Cross-Reference Index
Part NumberManufacturer
TDA1983 Kolberg-Pioneer, Inc (USA)
TDA1983 Portec Inc Pioneer Div (USA)
PM44-61-9596 Us Army Aviation and Missile Command (USA)
A1537 PRIMARY Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
Related Parts
8455-00-137-2562INTERCHANGEABLE
INSIGNIA,SHOULDER SLEEVE
4730-00-343-6955INTERCHANGEABLE
STRAINER,SEDIMENT
72-30 3-4
8455-00-741-6066INTERCHANGEABLE
INSIGNIA,SHOULDER SLEEVE
8455-01-528-9421INTERCHANGEABLE
INSIGNIA,SHOULDER SLEEVE
8455-01-654-1683INTERCHANGEABLE
INSIGNIA,SHOULDER SLEEVE
8455-01-699-3470INTERCHANGEABLE
INSIGNIA,SHOULDER SLEEVE

Frequently Asked Questions

What is NSN 2520-00-426-1722?

NSN 2520-00-426-1722 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 2520-00-426-1722?

NSN 2520-00-426-1722 has 4 cross-referenced part numbers: TDA1983 (Kolberg-Pioneer, Inc), TDA1983 (Portec Inc Pioneer Div), PM44-61-9596 (Us Army Aviation and Missile Command), A1537 (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic).

What NSN replaces 2520-00-426-1722?

There are 6 known substitutes for 2520-00-426-1722: 8455-00-137-2562, 4730-00-343-6955, 8455-00-741-6066 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A1537?

Key specifications for A1537: Disk Type: EXTERNAL TEETH; Disk Material: FIBER; Flexibility: RIGID; Design Type: WET. 5 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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