SIGMA‌ ‌Surplus‌

‌Automation,‌ ‌Electrical,‌ ‌and‌ ‌Industrial‌ ‌Parts‌

SIGMA Surplus, a division of SIGMA Group, makes it easy to buy and sell spare parts. We serve all manufacturing industries with our wide selection of PLCs, HMIs, VFDs, servo drives, sensors and much more!

When your production line goes down, SIGMA Surplus helps you get you back up and running quickly. We deliver parts fast, offering same-day shipping on orders placed before 2 p.m. CST as well as overnight and international shipping options.

We source our parts from reliable, trusted suppliers across the United States and beyond - many of them from customers like yourself.

We are committed to building relationships through convenient transactions and a guarantee in our work. Every inspected and tested part in our inventory is backed by a free two-year warranty, giving you peace of mind when it comes to mission-critical parts.

Visit our about page to learn more about SIGMA Surplus and start buying or selling your parts.

  • 2 Year Warranty
    on inspected and tested parts
  • Same Day Shipping
    available on orders before 2 PM CST
  • 7500+ Positive Reviews
    99.8% positive feedback from our buyers
  • Quality Customer Service
    Our team takes care of you

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We add stock to our inventory daily