7-64 Outer Diameter
7/64" (0.109375) Inch Outer Diameter Standard Extension Springs
Definition of 7/64" Outer Diameter Extension Springs:
A 7/64" (seven sixty-fourths of an inch) outer diameter extension spring has an outer diameter of 0.109375 inches and is commonly used in lightweight mechanical applications where small but reliable tension is required. These springs are ideal for micro-mechanisms, electrical components, and precision instruments.
The Spring Store by Acxess Spring offers a wide inventory of 7/64" OD extension springs in various hook styles, wire diameters, and preload settings. Use our online spring finder to get exact results fast.
How To Measure Your 7/64" Inner Diameter Stock Extension Spring




Your 7/64" (seven sixty-fourths of an inch) extension spring’s outer diameter is a key dimension in determining its fit and performance. Even slight changes in this measurement can alter the force and usability of the spring in your design. A 7/64" OD extension spring is small enough for compact devices, but strong enough for consistent load-bearing applications.
Our 7/64" (0.109375) OD extension springs come in various options for total coils, wire diameter, initial tension, and body length. These factors directly impact load, travel, and lifecycle.
All of our stock 7/64" outer diameter extension springs are made with premium materials such as 302 stainless steel (ASTM A 313) and music wire (ASTM A 228) to provide strength, precision, and corrosion resistance.
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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