An extensive range of robust fittings and weatherproof products.


Connectivity solutions such as high brackets, busbars, and connector pins.

Power Transmission & Distribution

Connectors & structural components for cutouts, transformers, & substations.


Complex sensor housings & fracture-critical products.


Robust castings and assemblies for everyday appliances.

Commercial Hardware

Finished components for commercial & residential hardware applications.

Electronics & Telecom

Precision metal stamped sensors, connectors and cast housings & covers.

Fluid Power

Durable, precision products for high-pressure applications.

Food & Beverage

Handles, leveling pins, flow valves & button housings.


Custom housings to fully assembled commercial & industrial light fixtures.


Durable corrosion-resistant engineered castings and subassemblies.

Medical & Dental

Medical-grade parts for implants, housings, manifolds, and pumps.

Oil & Gas

Custom housings and covers for flow control, pressure valves & meters.

Power Tools

Durable yet lightweight custom metal housings.


Innovative precision metal stamped parts.

High Pressure Die Casting

High-pressure liquid metal is pressed into a precision metal mold cavity, and then cooled & solidified under pressure.

Ideal for a wide range of applications, including automotive, agricultural, electronics, and medical.

Sand Casting

Castings with complex shapes & inner cavities that are produced in a sand mold

Ideal for parts with complex shapes and inner cavities

Gravity Die Casting

A mold is filled with liquid metal using gravity and cooled and solidified in the mold to obtain a casting

Ideal for parts with complex shapes made with steel, aluminum or magnesium alloys

Investment Casting

A process used to obtain a mold without a parting surface; creates parts with high dimensional & geometric accuracy

Ideal for near-net shaped parts with complex shapes and high precision requirements

Partner Services

Custom Tooling, Machining, Surface Finishing, Special Purpose Machine Design & Development

Precision Metal Stamping

More than 80 presses convert metal sheets into custom parts

Ideal for parts for electronic connectors and microprocessor chips

Swiss Screw Machining

A specialized CNC machine capable of producing extremely small, precise parts

Ideal for complex miniature screws, contact pins & micro-fasteners

Partner Services

Rapid Prototypes, Heat Treating, Automated Assembly

Company History

Learn more about our company milestones.

Plant Locations

Learn more about our global manufacturing facilities.

Company News

See our company announcements and press releases.

Contact Us

Let us know how we can help create a solution for you


Download catalogs and key product guides.

Global Code of Conduct

Download our Code of Conduct and report violations.

Innovation at Sigma

Purposeful innovation – the continual improvement and innovation of custom-designed and precision-made products and solutions.

Engineered Solutions

Sigma offers solutions for complex product characteristics and technical requirements.

Global Supply Chain Management

U.S.-based supply chain management teams support our customers.

Partner Services

Sigma is a vertically integrated single-source solution provider.

Why Sigma

Your single-source solution for diverse connection needs.

True to our name, Sigma Engineered Solutions creates value through the sum of world-class engineering, state-of-the-art manufacturing, first-time-right quality, and superior customer service across the globe. Our goal is to be your partner of choice by being a company that is great to do business with – a company you can trust to provide you with products and services that solve your diverse connection needs.

Customer Testimonials

“I have worked with Sigma for many years and have great respect for the organization and its capabilities. The Sigma team is conscientious and professional. Their engineering, testing, manufacturing, and warehousing capabilities are excellent. They understand applicable standards and provide valuable feedback. They communicate in a timely and clear manner with a focus on exceeding expectations. Sigma is an important and valued partner.”

– Industry leader in protecting electrical infrastructure in the harshest environments

“Our success is directly related to the overwhelming commitment of talent and resources from the global Sigma team. They are professional, capable, and great to work with.”

– Industry-leading company in the Power Transmission & Distribution segment

“This unprecedented year has proven that Sigma is a true partner! Your team’s proactivity and responsiveness paired with honest communication helped us deal with this tough, fast-paced environment. We appreciate your team’s great attention to detail on new product launches. On behalf of our entire team…Thank you!”

– The largest provider of end-to-end wire and cable management for indoor and outdoor applications

“The Sigma team has inspired our company from day one with innovative product and process development. The team spirit, communication, and approach has made Sigma a reliable partner for us. The latest product development, in terms of a technology change from gravity die casting to pressure die casting, has clearly shown that Sigma thinks and works with foresight.”

– Leading technology company focused on industry, infrastructure, transport, and healthcare

“Tooling Dynamics is a top-notch company that likes to put customer service first! They are not just another supplier to us; we are more like partners in our business relationship. Great quality at a competitive price and a great company to work with!”

– Leading manufacturer of electronic interconnect solutions

Global Supply Chain

Sigma Engineered Solutions has a global manufacturing footprint, including 13 on-shore, near-shore, and off-shore facilities. We support customers with sales, customer service, and technical teams based in the U.S., India, and Mexico. Our capabilities include:

  • Warehousing
  • Offshore production
  • Packaging services

Industry-Leading Engineering Expertise

With more than 500 highly-skilled engineers on staff, Sigma Engineered Solutions has the expertise to take your products from concept design through production. Our team can design, develop, and manufacture Special Purpose Machines and tools in-house to substantially reduce lead times and ensure that your intellectual property is protected.

Purposeful Innovation

We are driven by a desire to continually improve and innovate precision-made products and solutions. Our global engineering team can work with you to design, develop, and build prototypes and products with shorter lead times.