PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

66613Transmission,mechanical,vehicula

Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic · NSN 2520-01-417-6679 · FSC 2520 · No Item Name Available
Verified by PartsTable
NSN 2520-01-417-6679 — this item is cataloged by the U.S. Government under National Stock Number 2520-01-417-6679. Primary manufacturer part number: 66613.
Features
  • Transmission,mechanical,vehicula — FSC 2520
  • Transfer Transmission Type: INTEGRAL
  • Features Provided: SEPARABLE POWER TAKEOFF UNIT MOUNTING FEATURE
  • Torque Capacity: 2648.000 FOOT-POUNDS NOMINAL FT
  • 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 Transmission,mechanical,vehicula, cataloged under National Stock Number 2520-01-417-6679, 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 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2520-01-417-6679
Primary Part Number66613
Item NameTransmission,mechanical,vehicula
FSC / FSG2520 / 25 — No Item Name Available
ManufacturerTwin Disc, Incorporated Dba Twin Disc Mid-Atlantic
StatusACTIVE
Transfer Transmission TypeINTEGRAL
Features ProvidedSEPARABLE POWER TAKEOFF UNIT MOUNTING FEATURE
Torque Capacity2648.000 FOOT-POUNDS NOMINAL FT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5120-00-242-3268034C INTERCHANGEABLE
Screwdriver,offset
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5210-00-357-9438599-9642-130 INTERCHANGEABLE
Gage Stock,thickness
Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa
6150-01-129-350566613 INTERCHANGEABLE
Lead,electrical
Unison Industries Llc
3455-01-292-599766613 INTERCHANGEABLE
Broach,square
Dumont Corp the
3110-01-321-479002-22220 INTERCHANGEABLE
Bearing,ball,annular
Warfield Electric Co Inc
5120-01-367-376754622 INTERCHANGEABLE
Screwdriver,offset
Pratt-Read Tools, Llc
7025-01-588-9490GFA 1510A-TRU INTERCHANGEABLE
Terminal,data Processing
All Green Corp
Cross-Reference Index
Part NumberManufacturer
66613 PRIMARY Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
26-0300-01-R Atap Inc (USA)
26-0300-01 Renk America Llc Div Renk America (USA)
TD61-1172 BOM 66613 Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
Related Parts
5120-00-242-3268INTERCHANGEABLE
SCREWDRIVER,OFFSET
034C
5210-00-357-9438INTERCHANGEABLE
GAGE STOCK,THICKNESS
599-9642-130
6150-01-129-3505INTERCHANGEABLE
LEAD,ELECTRICAL
66613
3455-01-292-5997INTERCHANGEABLE
BROACH,SQUARE
66613
3110-01-321-4790INTERCHANGEABLE
BEARING,BALL,ANNULAR
02-22220
5120-01-367-3767INTERCHANGEABLE
SCREWDRIVER,OFFSET
54622
7025-01-588-9490INTERCHANGEABLE
TERMINAL,DATA PROCESSING
GFA 1510A-TRU

Frequently Asked Questions

What is NSN 2520-01-417-6679?

NSN 2520-01-417-6679 is a Transmission,mechanical,vehicula, 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 2520-01-417-6679?

NSN 2520-01-417-6679 has 4 cross-referenced part numbers: 66613 (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic), 26-0300-01-R (Atap Inc), 26-0300-01 (Renk America Llc Div Renk America), TD61-1172 BOM 66613 (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic).

What NSN replaces 2520-01-417-6679?

There are 7 known substitutes for 2520-01-417-6679: 5120-00-242-3268, 5210-00-357-9438, 6150-01-129-3505 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 66613?

Key specifications for 66613: Transfer Transmission Type: INTEGRAL; Features Provided: SEPARABLE POWER TAKEOFF UNIT MOUNTING FEATURE; End Item Identification: TRUCK,FIRE/CRASH P23; Torque Capacity: 2648.000 FOOT-POUNDS NOMINAL FT. 4 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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