PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7057656Gear Synchronizer Assembly

U S Army Tank Automotive Command Amsta-Im-Mm · NSN 2520-00-654-3458 · FSC 2520 · No Item Name Available
Verified by PartsTable
NSN 2520-00-654-3458 — this item is cataloged by the U.S. Government under National Stock Number 2520-00-654-3458. Primary manufacturer part number: 7057656.
Features
  • Gear Synchronizer Assembly — FSC 2520
  • General Characteristics Item Description: CONSIST OF,2 OUTER STOP RINGS P/N 1669893,2 ASSEMBLY-INNER STOP RING AND CLUTCH PINS P/N 1669891,1 SLIDING CLUTCH P/N 1664334,1 CLUTCH GEAR P/N 1664335
  • 4 verified cross-references
  • Primary manufacturer: U S Army Tank Automotive Command Amsta-Im-Mm
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
General Description

The Gear Synchronizer Assembly, cataloged under National Stock Number 2520-00-654-3458, is classified within Federal Supply Class 2520 (No Item Name Available) of the Vehicular Equipment Components group. The primary manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 1 verified specification, 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN2520-00-654-3458
Primary Part Number7057656
Item NameGear Synchronizer Assembly
FSC / FSG2520 / 25 — No Item Name Available
ManufacturerU S Army Tank Automotive Command Amsta-Im-Mm
StatusCANCELLED
General Characteristics Item DescriptionCONSIST OF,2 OUTER STOP RINGS P/N 1669893,2 ASSEMBLY-INNER STOP RING AND CLUTCH PINS P/N 1669891,1 SLIDING CLUTCH P/N 1664334,1 CLUTCH GEAR P/N 1664335
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
2810-00-118-954292128 INTERCHANGEABLE
Cover,rockerbox
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
5915-01-092-640292128 INTERCHANGEABLE
Filter,band Pass
Drs Signal Solutions, Inc.
4920-01-300-196192128 INTERCHANGEABLE
Test Program Set
Textron Systems Corporation Dba Textron Systems Corp
4920-01-300-574392198 INTERCHANGEABLE
Test Program Set
Textron Systems Corporation Dba Textron Systems Corp
5930-01-511-774792128 INTERCHANGEABLE
Switch,toggle
Nemco Inc
Cross-Reference Index
Part NumberManufacturer
92128 New Venture Gear Inc New Process Gear Div (USA)
1669890 Chrysler Realty Company Llc Dba Daimler Chrysler (USA)
92198 New Venture Gear Inc New Process Gear Div (USA)
7057656 PRIMARY U S Army Tank Automotive Command Amsta-Im-Mm (USA)
Related Parts
2810-00-118-9542INTERCHANGEABLE
COVER,ROCKERBOX
92128
5915-01-092-6402INTERCHANGEABLE
FILTER,BAND PASS
92128
4920-01-300-1961INTERCHANGEABLE
TEST PROGRAM SET
92128
4920-01-300-5743INTERCHANGEABLE
TEST PROGRAM SET
92198
5930-01-511-7747INTERCHANGEABLE
SWITCH,TOGGLE
92128

Frequently Asked Questions

What is NSN 2520-00-654-3458?

NSN 2520-00-654-3458 is a Gear Synchronizer Assembly, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 2520 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2520-00-654-3458?

NSN 2520-00-654-3458 has 4 cross-referenced part numbers: 92128 (New Venture Gear Inc New Process Gear Div), 1669890 (Chrysler Realty Company Llc Dba Daimler Chrysler), 92198 (New Venture Gear Inc New Process Gear Div), 7057656 (U S Army Tank Automotive Command Amsta-Im-Mm).

What NSN replaces 2520-00-654-3458?

There are 5 known substitutes for 2520-00-654-3458: 2810-00-118-9542, 5915-01-092-6402, 4920-01-300-1961 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7057656?

Key specifications for 7057656: General Characteristics Item Description: CONSIST OF,2 OUTER STOP RINGS P/N 1669893,2 ASSEMBLY-INNER STOP RING AND CLUTCH PINS P/N 1669891,1 SLIDING CLUTCH P/N 1664334,1 CLUTCH GEAR P/N 1664335. 1 total characteristics are documented in the Federal Logistics Information System.

Is NSN 2520-00-654-3458 still in active supply?

NSN 2520-00-654-3458 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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