1-8 Outer Diameter
1/8" (0.125) Inch Outer Diameter Standard Extension Springs
Definition of 1/8" Outer Diameter Extension Springs:
A 1/8" (one eighth of an inch) outer diameter extension spring has an outer diameter of 0.125 inches and is typically used in light-duty tension applications such as electronics, miniature devices, and precision tools. These springs offer a balance between compact size and functional strength.
The Spring Store by Acxess Spring offers a wide inventory of in-stock 1/8" OD extension springs with multiple wire diameters, body lengths, and initial tension levels to fit your design needs.
How To Measure Your 1/8" Inner Diameter Stock Extension Spring




Your 1/8" (one eighth of an inch) extension spring’s outer diameter is a critical parameter in determining how much force it can handle and whether it fits your assembly. Small variations in this dimension can significantly affect performance, especially in precision assemblies or electronic enclosures.
Our 1/8" (0.125) OD extension springs are available with various wire thicknesses, lengths, and hook styles. The wire diameter and number of coils influence how much load the spring can carry and how far it can stretch under tension.
All of our 1/8" OD stock extension springs are manufactured using high-quality materials like 302 stainless steel (ASTM A 313) and music wire (ASTM A 228) to ensure longevity, strength, and resistance to environmental wear.
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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