PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2A75Shaft,drive,flexible

Dynalec Corporation · NSN 3040-00-580-9668 · FSC 3040 · No Item Name Available
Verified by PartsTable
NSN 3040-00-580-9668 — this item is cataloged by the U.S. Government under National Stock Number 3040-00-580-9668. Primary manufacturer part number: 2A75.
Features
  • Shaft,drive,flexible — FSC 3040
  • FSC Application Data: TACHOMETER,INDICATING
  • Threaded Securing Hole Location: 0.125 IN. FROM END THROUGH TO BORE IN
  • End Type: ROUND FEMALE
  • Unit Type: WIRE WOUND
  • Securing Hole Thread Size: 4-40
  • Unthreaded Securing Hole Quantity: 1
  • Machined Feature Size: 0.188 IN. DIA BY 0.313 IN. LG BORE IN
Applications
  • Applications requiring Steel Shaft construction
General Description

The Shaft,drive,flexible, cataloged under National Stock Number 3040-00-580-9668, is classified within Federal Supply Class 3040 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Dynalec Corporation. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 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
NSN3040-00-580-9668
Primary Part Number2A75
Item NameShaft,drive,flexible
FSC / FSG3040 / 30 — No Item Name Available
ManufacturerDynalec Corporation
StatusACTIVE
FSC Application DataTACHOMETER,INDICATING
Threaded Securing Hole Location0.125 IN. FROM END THROUGH TO BORE IN
End TypeROUND FEMALE
Unit TypeWIRE WOUND
Securing Hole Thread Size4-40
Unthreaded Securing Hole Quantity1
Machined Feature Size0.188 IN. DIA BY 0.313 IN. LG BORE IN
Threaded Securing Hole Quantity1
Unthreaded Securing Hole Location1/8 IN. FROM END 180 DEG FROM THD HOLE IN
Cross Section Size and Location0.375 INCHES NOMINAL DIAMETER IN
MaterialSTEEL SHAFT
Hole Diameter0.052 INCHES NOMINAL IN
Outside Diameter0.156 INCHES NOMINAL IN
End Overall Length0.563 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5120-00-227-8074JHWS-115P INTERCHANGEABLE
Extension,socket Wrench
Williams J H Industrial Products Inc
4710-00-494-5885778-3414-001 INTERCHANGEABLE
Tube,transition,air Duct
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
3120-01-194-4815 INTERCHANGEABLE
Bushing,sleeve
5965-01-243-2968 INTERCHANGEABLE
Headset,electrical
6210-01-355-556402-0250276-00 INTERCHANGEABLE
Light,beacon
Whelen Engineering Company, Inc. Dba Whelen Engineering Co Inc Div Whelen Engineering Company
4920-01-610-1836A610 INTERCHANGEABLE
Tube,flash,bracket
General Atomics Aeronautical Systems, Inc.
Cross-Reference Index
Part NumberManufacturer
A610 Dynalec Corporation (USA)
2A75 The Electric Tachometer Corp. (USA)
2A75 PRIMARY Dynalec Corporation (USA)
A610 The Electric Tachometer Corp. (USA)
Related Parts
5120-00-227-8074INTERCHANGEABLE
EXTENSION,SOCKET WRENCH
JHWS-115P
4710-00-494-5885INTERCHANGEABLE
TUBE,TRANSITION,AIR DUCT
778-3414-001
3120-01-194-4815INTERCHANGEABLE
BUSHING,SLEEVE
5965-01-243-2968INTERCHANGEABLE
HEADSET,ELECTRICAL
6210-01-355-5564INTERCHANGEABLE
LIGHT,BEACON
02-0250276-00
4920-01-610-1836INTERCHANGEABLE
TUBE,FLASH,BRACKET
A610

Frequently Asked Questions

What is NSN 3040-00-580-9668?

NSN 3040-00-580-9668 is a Shaft,drive,flexible, manufactured by Dynalec Corporation, classified under FSC 3040 (No Item Name Available). Status: active.

What are the part numbers for NSN 3040-00-580-9668?

NSN 3040-00-580-9668 has 4 cross-referenced part numbers: A610 (Dynalec Corporation), 2A75 (The Electric Tachometer Corp.), 2A75 (Dynalec Corporation), A610 (The Electric Tachometer Corp.).

What NSN replaces 3040-00-580-9668?

There are 6 known substitutes for 3040-00-580-9668: 5120-00-227-8074, 4710-00-494-5885, 3120-01-194-4815 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2A75?

Key specifications for 2A75: FSC Application Data: TACHOMETER,INDICATING; Threaded Securing Hole Location: 0.125 IN. FROM END THROUGH TO BORE IN; Special Features: TERMINAL ENDS ARE BRASS; End Type: ROUND FEMALE. 16 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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