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Flexible Shaft Assembly

NSN: 1680-00-528-1718 | Model: 15939-021-03
ITAR Registered seal

An item consisting of a casing with fittings and attachments on each end and a spirally wound wire core with formed en (s) and/or crimped on end fittings. It is designed to transmit rotary motion around bends from a motor or other power source to drive various types of equipment, such as tachometers, speedometers, remote controls, instruments, and the like, which are located at an angle and/or distance from the power source. See also control assembly, push-pull.

NSN Properties and Flags
NATO Stock Number
Yes - ITAR Controlled
Thread Class
2A both ends
Thread Direction
Right-hand both ends
Thread Length
0.281 inches both ends
Spline Major Diameter
0.310 inches both ends
Overall Length
22.093 inches
Spline Quantity
12 both ends
Spline Minor Diameter
0.242 inches both ends
Thread Depth
0.281 inches both ends
Tip Length
0.500 inches both ends
Pitch Diameter
0.250 inches both ends
Core Material
Screw Thread Series Designator
Uns both ends
Core Diameter
0.250 inches
Thread Location
Internal both ends
End Type
Round, internal splinted both ends
Width Across Flats
0.750 inches both ends
End Connection Type
Threaded internal both ends
Spline Pressure Angle In Deg
14.5 both ends
Spline Length
0.242 inches both ends
Spline Type
In volute both ends
Not included both ends
Casing Material
Wrenching Facility Type
Hexagon both ends
Cross Section Size And Location
0.406 inches diameter both ends
Torsional Deflection Rating
50 degrees ft-lb in. Torsional deflection in winding direction, 75 degrees ft-lb in unwinding direction
Casing Length Between Ferrules
21.093 inches
Casing Outside Diameter
0.445 inches
Swivel End
Not provided both ends
0.875 inches both ends
Lubrication Fitting
Not provided both ends
21.529 inches
Core Rotation Direction
Clockwise or counterclockwise
Core Removability
Minimum Operating Radius
3.000 inches
Fsc Application Data
Actuator installation, oil cooler flap, aircraft

Pricing and Availability

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NSN 1680-00-528-1718 Datasheet

Supply Class (FSC):
Miscellaneous Aircraft Accessories And Components
Cross Reference:
  • 15939-021-03
  • 15939-021-03
  • 15939-021-03
Cage Codes:
  • Safran Power Usa, Llc (CAGE 3CPE0)
  • Lucas Aerospace Power Equipment (CAGE 31435)
  • Ge Aviation Systems Llc (CAGE 35351)
Schedule B & Trade:
  • Schedule B: 8803300060 (NAICS 336413)

    Other parts of airplanes or helicopters for use in military aircraft (excludes propellers, rotors, undercarriages, and parts thereof)

  • SITC: 79295

    Parts of airplanes or helicopters, n.E.S.

  • End Use: 50070

    Parts for military-type goods


N - Indicates there is no data in the humors and the nsn is in a fsc not generally suspected of containing hazardous materials.


A - Item does not contain precious metal.


- Represents items with no adp components


- The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Freight Information:
  • NMFC:

    129920 - Shafts/shafting, flex noi stl

  • WCC:

    671 - Aircraft parts, to include test/tool sets and equipment (other than armament systems)

  • ACC:

    A - Supplies and equipment for aircraft and aerial targets, including aircraft and maintenance parts, aircraft accessories, aircraft

  • ADC:

    A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.

  • LTL:

    M - 85.0

  • SHC:

    Z - Other or no special handling required (sh)

  • TCC:

    Z - No special type of cargo code applicable

NSN Management Codes:
  • SOS
  • AAC
  • Quantity per pack
  • Unit of Measure
  • Shelf Life
  • Classification Control
  • Repariability

Questions & Answers:

What are the historical prices recorded for this stock number?
Historical data shows pricing from $510.10 to $850.16..
Does NSN 1680-00-528-1718 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Department Of The Air Force
What is the NIIN of NSN 1680-00-528-1718?
005281718 or 00-528-1718
Does NSN 1680-00-528-1718 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 1680-00-528-1718?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Jan 01, 1963