9-64 Outer Diameter
9/64" (0.140625) Inch Outer Diameter Standard Extension Springs
Definition of 9/64" Outer Diameter Extension Springs:
A 9/64" (nine sixty-fourths of an inch) outer diameter extension spring has an outer diameter of 0.140625 inches. This is a very small extension spring size typically used in lightweight mechanical devices, electronic systems, and precision instruments that require delicate tension and minimal load.
At The Spring Store by Acxess Spring, we carry a variety of 9/64" OD extension springs with options in wire diameter, hook configuration, coil count, and overall length, designed for precision and small-scale mechanical performance.
How To Measure Your 9/64" Inner Diameter Stock Extension Spring




Your 9/64" (nine sixty-fourths of an inch) extension spring’s outer diameter plays a critical role in low-force, high-precision applications. A 9/64" OD extension spring is ideal for electronics, medical devices, small mechanical assemblies, and other systems where minimal space and force are key.
The 9/64" (0.140625) OD extension springs offered at The Spring Store come in various wire diameters, coil lengths, body sizes, and hook styles to accommodate your exact design requirements.
All of our 9/64" OD extension springs are made from premium 302 stainless steel (ASTM A 313) or music wire (ASTM A 228), ensuring durability, elasticity, and excellent performance in compact designs.
-
Price Part Number Image Ship typeOutside Diameter
Ship type
Inside Diameter
Outside Diameter
Free Length
Inside Diameter
Rate
Free Length
Max. Deflection
Spring rate or spring constant: The amout of force required to move the spring 1 inch of distance or in millimeters the amount of force required to move the spring 1 millimeter of distance.
Max. Load
Max. Deflection
Solid Height
The maximum amount of force or load you can place on this spring. If you put more force than this you will distort or fatigue the spring.
Wire Diameter
Solid Height
Total Coils
Wire Diameter
Material Type
Total Coils
End Type
Material Type
End Type