Mechanical Assembly of Molded Components and Hardware

Midwest Molding, Inc. combines molded plastic components, inserts, hardware, and related parts into functional assemblies for demanding manufacturing applications. With project engineering support, error-proofing, part re-formulation for cost savings, and integrated molding capabilities, the team helps simplify sourcing while supporting consistent quality and delivery for automotive, electronics, consumer goods, and appliance customers.

Technicians assembling molded plastic components and hardware in a manufacturing facility

Our Mechanical Assembly Services

Integrated molding and assembly services connect molded parts, inserts, hardware, and wiring into complete manufactured assemblies.

Multi-Component Assembly

Midwest Molding combines injection molded parts with additional components to create complete assemblies. Project engineers support error proofing, redesign optimization, functionality, and quality throughout the manufacturing process.

Insert & Composite Molding

Insert and composite molding combines materials or pre-existing components through injection molding. Dedicated equipment, robotics, and engineering support help produce complex assemblies for automotive, electronics, and consumer goods.

Wire Harness Assembly

Wire harness assembly supports ready-to-install electrical assemblies for automotive, transportation, electronics, and consumer goods applications, backed by project management and integrated molding capabilities.

Integrated Manufacturing Support

Integrated Assembly For Complex Components

Mechanical assembly can bring molded parts, inserts, hardware, and wiring together through one coordinated manufacturing partner. Midwest Molding supports complex component designs with multi-component assembly, insert and composite molding, wire harness assembly, error proofing, and redesign optimization. Its Bartlett, Illinois manufacturing facility combines molding, assembly, engineering, and quality support to help customers manage demanding production requirements from one source.

Finished molded component assembly with inserts and wiring on a production table
The Midwest Molding Difference

Why Choose Midwest Molding, Inc.?

A single manufacturing partner for complex molded components, assemblies, engineering, and quality support.

Integrated Capabilities

Access molding, assembly, and welding capabilities from one manufacturing provider for coordinated production support.

Experienced Management

An experienced management team supports complex manufacturing programs across the automotive, electronics, and consumer goods industries.

Quality Systems

Quality and environmental certifications support controlled plastic molding and assembly production for demanding customers.

Error Proofing and Cost Savings

Project engineers support error proofing, redesign optimization, and cost-conscious improvements for complex assemblies.

Meet The Manufacturing Team

Experienced professionals support complex molding and assembly programs from program launch through production.

Midwest Molding, Inc. is a specialized plastic injection molding and assembly manufacturer headquartered at 1560 Hecht Drive in Bartlett, Illinois. The company’s experienced management team supports long-term growth across the manufacturing industries it serves, with capabilities spanning injection molding, assembly, and welding. Its manufacturing and project engineers help customers manage complex molded components, integrated assemblies, tooling, and process optimization. With an average of more than 35 years of manufacturing industry experience across its management team, Midwest Molding focuses on precision plastic molding and assembly for demanding manufacturing needs. The company supports automotive, transportation, electronics, consumer goods, and appliance applications through integrated production capabilities and established quality systems.

ExperienceManagement team averages more than 35 years
Facility120,000 sq. ft. manufacturing facility
LocationHeadquartered in Bartlett, Illinois

Frequently Asked Questions

What do mechanical assemblers do?

Mechanical assemblers bring separate components together to create a functioning product or subassembly. For molded-component programs, this can include joining injection molded parts with inserts, hardware, wiring, or other components. Midwest Molding supports this work through multi-component assembly, insert and composite molding, wire harness assembly, project engineering, error proofing, and redesign optimization.

What does "mechanical assembly" mean?

What types of molded components can be assembled?

Can molded parts and hardware be combined in one assembly?

Does Midwest Molding provide wire harness assembly?

Can Midwest Molding support a project from tooling through assembly?

Which industries use these assembly services?

How can I discuss a mechanical assembly project with Midwest Molding?

Have More Assembly Questions?

Talk with Midwest Molding about your molded component and hardware requirements.

Certified & Recognized

Awards and Recognition

IATF 16949 certification mark

IATF 16949

Certification listed by Midwest Molding, Inc.

ISO 14001:2015 certification mark

ISO 14001:2015

Certification listed for environmental management.

ISO 14001:2004 certification mark

ISO 14001:2004

Certification listed by Midwest Molding, Inc.

ISO 9001:2008 certification mark

ISO 9001:2008

Certification listed by Midwest Molding, Inc.

Minority Business Enterprise certification mark

Minority Business Enterprise certification

Certification listed by Midwest Molding, Inc.

Discuss Your Mechanical Assembly Needs

Share your molded component, hardware, or wire harness requirements and connect with Midwest Molding’s project team.

Contact Us Today

For immediate assistance, feel free to give us a direct call at 224.208.1110.