PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5775Countershaft

Thomas C. Wilson, Inc. Dba Thomas C Wilson · NSN 4940-00-391-4606 · FSC 4940 · No Item Name Available
Verified by PartsTable
NSN 4940-00-391-4606 — this item is cataloged by the U.S. Government under National Stock Number 4940-00-391-4606. Primary manufacturer part number: 5775.
Features
  • Countershaft — FSC 4940
  • 1 verified cross-reference
  • Primary manufacturer: Thomas C. Wilson, Inc. Dba Thomas C Wilson
Applications
  • Maintenance depot operations
  • Field repair and servicing
  • Vehicle maintenance facilities
General Description

The Countershaft, cataloged under National Stock Number 4940-00-391-4606, is classified within Federal Supply Class 4940 (No Item Name Available) of the Maintenance and Repair Shop Equipment group. The primary manufacturer of record is Thomas C. Wilson, Inc. Dba Thomas C Wilson. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameCountershaft
FSC / FSG4940 — No Item Name Available (FSG 49)
ManufacturersThomas C. Wilson, Inc. Dba Thomas C Wilson (CAGE 66042)
Technical Specifications
ParameterValue
NSN4940-00-391-4606
Primary Part Number5775
Item NameCountershaft
FSC / FSG4940 / 49 — No Item Name Available
ManufacturerThomas C. Wilson, Inc. Dba Thomas C Wilson
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
2995-00-136-24205775 INTERCHANGEABLE
Housing Assy,hydrau
Eaton Aerospace, Llc Dba Jackson South
4730-00-188-63141831 INTERCHANGEABLE
Fitting,lubrication
Stewart-Warner Corporation
4820-00-311-527005-0775 INTERCHANGEABLE
Seat,valve
Speakman Company Dba Speakman Div Plumbing, Safety, and Shower Products
3120-00-338-48455775 INTERCHANGEABLE
Bearing
Harbormaster Marine, Inc
5950-00-510-52625775 INTERCHANGEABLE
Transformer,power
Cae Usa Inc.
2805-00-532-00615775 INTERCHANGEABLE
Flywheel,engine
R.h. Industries, Inc.
5950-00-538-5665 INTERCHANGEABLE
Transformer,audio Frequency
3020-00-694-0420 INTERCHANGEABLE
Gear,helical
5306-00-695-70695775 INTERCHANGEABLE
Bolt,spring
Fwd Seagrave Holdings Lp
5950-00-732-844734008 INTERCHANGEABLE
Transformer,audio Frequency
Freed Transformer Co
Cross-Reference Index
Part NumberManufacturer
5775 Thomas C. Wilson, Inc. Dba Thomas C Wilson (USA)
Related Parts
2995-00-136-2420INTERCHANGEABLE
HOUSING ASSY,HYDRAU
5775
4730-00-188-6314INTERCHANGEABLE
FITTING,LUBRICATION
1831
4820-00-311-5270INTERCHANGEABLE
SEAT,VALVE
05-0775
3120-00-338-4845INTERCHANGEABLE
BEARING
5775
5950-00-510-5262INTERCHANGEABLE
TRANSFORMER,POWER
5775
2805-00-532-0061INTERCHANGEABLE
FLYWHEEL,ENGINE
5775
5950-00-538-5665INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
3020-00-694-0420INTERCHANGEABLE
GEAR,HELICAL
5306-00-695-7069INTERCHANGEABLE
BOLT,SPRING
5775
5950-00-732-8447INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
34008
5975-00-849-4082INTERCHANGEABLE
COVER,CONDUIT OUTLET
6105-01-369-0419INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
ECP4409T-4

Frequently Asked Questions

What is NSN 4940-00-391-4606?

NSN 4940-00-391-4606 is a Countershaft, manufactured by Thomas C. Wilson, Inc. Dba Thomas C Wilson, classified under FSC 4940 (No Item Name Available). Status: active.

What are the part numbers for NSN 4940-00-391-4606?

NSN 4940-00-391-4606 has 1 cross-referenced part number: 5775 (Thomas C. Wilson, Inc. Dba Thomas C Wilson).

What NSN replaces 4940-00-391-4606?

There are 12 known substitutes for 4940-00-391-4606: 2995-00-136-2420, 4730-00-188-6314, 4820-00-311-5270 and 9 more. Verify interchangeability with system specifications before substitution.

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