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.

Electronics & Telecom Market Solutions

Serving the Electronics & Telecom Markets with Precision Parts

We support the electronics and telecom industries with high-quality, precision parts produced by Sigma Connectivity and Sigma Castings.

Electronic sensors and connectors produced by Sigma Connectivity help make products faster and more efficient and can be found in next-generation wireless infrastructure, mobile devices, gaming systems, graphic processing units, high-resolution screens, interactive touchscreens, and advanced connectivity solutions for automobiles. Sigma Connectivity specializes in high volume, precision metal stamping, with expertise in working with very thin gauge metals under extremely tight tolerances – many of our stampings are one-half to one-quarter the thickness of a piece of hair.

Sigma Castings produces strong, accurate parts used throughout the telecom industry. Our housings and covers can be found in base stations for cell towers, and we eliminate impurities in the casting process that can lead to distortion in transmission. Our global supply chain solutions provide you with a reliable source of products, and we can manufacture customized parts made to your specifications.

Sigma Engineered Solutions can assist you in the design, prototyping, building, development, and all phases of manufacturing your custom parts. We also offer automated quality control to check critical dimensions and tolerances

We make precise sensors and connectors that meet the most exacting tolerances.

Featured Product: Digital Meter Cover

Digital Meter Cover

Additional Product Examples

Outdoor mobile antenna is on the roof. The base station repeater is installed at the top of the building. Wireless telephone transmitter is a close up.
Antenna Parts
Camera Arms
home automation unit
Home Automation Units
LGA Contacts
LGA Contacts

Our Services

Sigma offers a number of services that can help with your Electronic product needs.

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Rapid Prototyping

Product Testing

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Custom Tooling

Precision Machining

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Surface Finishing

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Special Purpose Machine Design & Development

See All Services