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Compression Springs Compression Springs

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Extension Springs Extension Springs

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Torsion Springs Torsion Springs

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Conical Springs Conical Springs

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5-16 Outer Diameter

5/16" (0.3125) Inch Outer Diameter Standard Extension Springs

Definition of 5/16" Outer Diameter Extension Springs:
A 5/16" (five sixteenths of an inch) outer diameter extension spring has an outer diameter of 0.3125 inches. This compact spring size is ideal for small mechanical assemblies, precision instruments, electronics, and hobbyist applications that require consistent pull strength and flexibility.

At The Spring Store by Acxess Spring, we offer a wide selection of 5/16" OD extension springs in various wire sizes, hook configurations, coil counts, and load ratings to fit your technical requirements.

How To Measure Your 5/16" Inner Diameter Stock Extension Spring

how to measure a extension springhow to measure a extension spring
extension force chartextension force chart

Your 5/16" (five sixteenths of an inch) extension spring’s outer diameter is a determining factor in its performance and fit in tight spaces. A 5/16" OD extension spring is perfect for compact applications that require precise force control and elasticity.

The 5/16" (0.3125) OD extension springs available at The Spring Store are offered in multiple variations — including different wire diameters, coil counts, body lengths, and hook styles — to suit your design needs.

All of our 5/16" OD extension springs are manufactured using high-quality 302 stainless steel (ASTM A 313) or music wire (ASTM A 228) for optimal durability, corrosion resistance, and spring-back performance.

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  • Price Part Number Image Ship type
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  • Special Price $28.54 Regular Price $32.82 As low as $22.84
    PE062-313-40290-SST-2560-NH-N-IN
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    PE062-313-40290-SST-2560-NH-N-IN Ships Today in in in lbs/in in lbs in in Stainless Steel 302 (SST) No Hook (NH)
  • Special Price $4.14 Regular Price $4.77 As low as $0.90
    PE026-313-51808-MW-1895-CO-N-IN
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    PE026-313-51808-MW-1895-CO-N-IN Ships within 5 Business Days in in in lbs/in in lbs in in Music Wire (MW) Cross-Over Hook (CO)

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