insert-molded & overmolded
As electrical, medical, sensing, and industrial products become more compact, stamped metal components are increasingly integrated directly into molded assemblies.
Gromax supports precision stamped inserts for molding applications where position, retention, exposed contacts, dimensional control, and metal-to-plastic integration are critical.
where our stampings fit
Insert-molded and overmolded assemblies use stamped metal components to provide electrical, mechanical, and structural functions within molded housings.
Part requirements depend on resin, molding conditions, insert geometry, retention, exposed contacts, electrical function, and final assembly.
key design & manufacturing requirements
Medical-device stampings should be evaluated within the complete electrical, mechanical, and molded assembly.
Gromax can review these interactions before production tooling begins.
Insert Position & Retention
Tabs, barbs, undercuts, holes, coined features, and formed geometry may be used to help hold the metal insert in position before and during molding.
Mold Flow & Molding Forces
Insert geometry should account for resin flow, gate location, pressure, temperature, and the potential for the metal component to shift or distort during molding.
Exposed Contact Geometry
Terminals, pins, contacts, and conductive surfaces must remain correctly positioned and free from unwanted resin where electrical or mechanical interfaces are required.
Material & Thermal Compatibility
Metal selection, temper, plating, resin type, molding temperature, and differential thermal expansion can influence dimensional stability and long-term performance.
Formed Geometry & Coplanarity
Bend angles, formed height, terminal spacing, and coplanarity may affect how the insert loads into the mold and how the finished assembly mates with other components.
Plating & Surface Condition
Tin, nickel, gold, silver, or other specified finishes may be required for conductivity, solderability, corrosion resistance, contact performance, or downstream assembly.
quality, compliance & production support
Insert-molded programs require close coordination between stamping, molding, inspection, and assembly to maintain insert position and process consistency.
Gromax operates under an **ISO 9001:2015 quality system** and supports customer-specific requirements across automotive, medical, industrial, and electronics programs.
Critical-Dimension Inspection
Verify insert position, terminal spacing, formed height, contact location, hole position, coplanarity, and other features that affect mold loading or final assembly.
Material & Finish Control
Review alloy, temper, plating, coating thickness, lot identification, and specified surface requirements.
Custom Gaging & Functional Checks
Use application-specific fixtures where insert position, terminal alignment, exposed-contact location, or final molded geometry are difficult to verify with standard measurement alone.
Tool & Process Control
Support production with progressive-die maintenance, dimensional monitoring, burr control, forming review, troubleshooting, root-cause analysis, and corrective action.
Molding-Process Coordination
Review stamped-part features that affect insert loading, retention, resin shutoff, mold clearance, and downstream assembly so stamping and molding requirements work together.
Customer-Specific Qualification
Support PPAP, FAI, capability studies, control plans, traceability, inspection records, and other customer-defined documentation where required.
Have an Insert-Molded Component You’d Like Us to Review?
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Customer Confidentiality
& Export Control Notice
To protect customer confidentiality and controlled technical information, Gromax does not publicly display customer-specific drawings, specifications, or sensitive part details without appropriate authorization.
Images shown are illustrative only and are used to represent the types of parts, geometries, and manufacturing capabilities Gromax supports. They do not depict specific customer designs or proprietary technical data.