Electrical

An extensive range of robust fittings and weatherproof products.

Automotive

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

Power Transmission & Distribution

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

Aerospace

Complex sensor housings & fracture-critical products.

Appliances

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.

Lighting

Custom housings to fully assembled commercial & industrial light fixtures.

Marine

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.

Solar

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

Resources

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.

Sustainability at Sigma

Our commitment to excellence drives us to build a better, more sustainable future in all aspects of our operations.

Safety at Sigma

Safety is more than just a priority at Sigma Engineered Solutions – it’s a core value.

< Products

Water Tight Hub

Material: Zinc Die-Cast
Category: Fittings
Sub Category: Rigid
Type(s): Water Tight Hub
Feature(s): Insulated

Water tight hubs are used to terminate rigid threaded conduit or IMC to enclosure.

  • Assembled with 90°C rated insulator and rubber sealing ring
  • UL listed and CSA certified for wet locations
  • Meets NEMA sealing requirements for Type 2, 3R, 4, 4X, 5 and 12 rated enclosures
  • Die-cast from high strength zinc alloy
Model Number
WTH050I
WTH075I
WTH100I
WTH125I
WTH150I
WTH200I
WTH250I
WTH300I
WTH350I
WTH400I
ABC
1.431.50.55
ABC
1.681.50.74
ABC
21.810.94
ABC
2.371.911.29
ABC
2.751.881.51
ABC
3.251.891.98
ABC
3.782.62.41
UL: E155411
CSA: LR57925

Standards: UL 514B, CSA C22.2 No. 18.3-12
65!

WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov.

< Products

Water Tight Hub

Material: Zinc Die-Cast
Category: Fittings
Sub Category: Rigid
Type(s): Water Tight Hub

Used to terminate rigid threaded conduit or IMC to enclosure

  • UL listed and CSA certified for wet locations
  • Meets NEMA sealing requirements for Type 2, 3R, 4, 4X, 5 and 12 rated enclosures
Model Number
WTH050
WTH075
WTH100
WTH125
WTH150
WTH200
WTH250
WTH300
WTH350
WTH400
UL: E155411
CSA: LR57925

Standards: UL 514B, CSA C22.2 No. 18.3-12
< Products

Water Tight Hub with Grounding Screw

Material: Zinc Die-Cast
Category: Fittings
Sub Category: Rigid
Type(s): Water Tight Hub
Feature(s): Insulated

Used to terminate rigid threaded conduit or IMC to enclosure

  • UL listed and CSA certified for wet locations
  • Meets NEMA sealing requirements for Type 2, 3R, 4, 4X, 5 and 12 rated enclosures
  • Assembled with 90°C rated insulator and rubber sealing ring
  • With bonding screw for grounding
Model Number
WTHG050I
WTHG075I
WTHG100I
WTHG125I
WTHG150I
WTHG200I
WTHG250I
WTHG300I
WTHG350I
WTHG400I
UL: E88878
CSA: LR57925

Standards: UL 514B, CSA C22.2 No. 18.3-12
< Products

Water Tight Hub

Material: Zinc Die-Cast
Category: Fittings
Sub Category: Rigid
Type(s): Water Tight Hub
Feature(s): Insulated

Water tight hubs are used to terminate rigid threaded conduit or IMC to enclosure.

  • Assembled with 90°C rated insulator and rubber sealing ring
  • UL listed and CSA certified for wet locations
  • Meets NEMA sealing requirements for Type 2, 3R, 4, 4X, 5 and 12 rated enclosures
  • Die-cast from high strength zinc alloy
Model Number Retail Pack Master Pack Package Type
49070 1 10 Polybag
44070 2 10 Polybag
44071 1 10 Polybag
02-54072 1 10 Polybag
02-54073 1 10 Polybag
02-54074 1 5 Polybag
02-54075 1 3 Polybag
02-54076 1 2 Polybag
ABC
1.431.50.55
ABC
1.681.50.74
ABC
21.810.94
ABC
2.371.911.29
ABC
2.751.881.51
ABC
3.251.891.98
ABC
3.782.62.41
UL: E155411
CSA: LR57925

Standards: UL 514B, CSA C22.2 No. 18.3-12
65!

WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov.