An extensive range of robust fittings and weatherproof products.
Connectivity solutions such as high brackets, busbars, and connector pins.
Connectors & structural components for cutouts, transformers, & substations.
Complex sensor housings & fracture-critical products.
Robust castings and assemblies for everyday appliances.
Finished components for commercial & residential hardware applications.
Precision metal stamped sensors, connectors and cast housings & covers.
Durable, precision products for high-pressure applications.
Handles, leveling pins, flow valves & button housings.
Custom housings to fully assembled commercial & industrial light fixtures.
Durable corrosion-resistant engineered castings and subassemblies.
Medical-grade parts for implants, housings, manifolds, and pumps.
Custom housings and covers for flow control, pressure valves & meters.
Durable yet lightweight custom metal housings.
Innovative precision metal stamped parts.
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.
Castings with complex shapes & inner cavities that are produced in a sand mold
Ideal for parts with complex shapes and inner cavities
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
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
Custom Tooling, Machining, Surface Finishing, Special Purpose Machine Design & Development
More than 80 presses convert metal sheets into custom parts
Ideal for parts for electronic connectors and microprocessor chips
A specialized CNC machine capable of producing extremely small, precise parts
Ideal for complex miniature screws, contact pins & micro-fasteners
Rapid Prototypes, Heat Treating, Automated Assembly
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Learn more about our global manufacturing facilities.
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Purposeful innovation – the continual improvement and innovation of custom-designed and precision-made products and solutions.
Sigma offers solutions for complex product characteristics and technical requirements.
U.S.-based supply chain management teams support our customers.
Sigma is a vertically integrated single-source solution provider.
Closure plugs are used to seal off unused knockouts in weatherproof boxes, extension rings and cluster covers.