+1 (262) 255 0223
Precision Metal Stamping
Precision Parts. Consistent Quality. Production-Ready.
When precision, complexity, and compliance put production at risk, Gromax delivers. We provide high-accuracy, high-volume metal stamping with in-house progressive dies—ensuring every part meets functional, assembly, and regulatory demands on time and on spec.
Capabilities
High-precision stamping for prototypes, pilot runs, and full-scale production.
Progressive Die Stamping
Progressive Die Stamping
Multi-station progressive stamping using Class A tooling for complex geometries, tight tolerances, and high-speed production.
Single-Stage and Compound Stamping
Single-Stage and Compound Stamping
Ideal for flat parts, deep draws, or low-quantity runs requiring standalone forming or blanking operations.
Prototype & Pilot Stamping
Prototype & Pilot Stamping
Short-run stamping with prototype or bridge tooling to validate form, fit, function, and manufacturability before production.
Tight Tolerance Stamping
Tight Tolerance Stamping
Capable of holding ±0.0015” tolerances on critical dimensions with in-die feature control and secondary ops integration.
In-Die Operations
In-Die Operations
Integrated coining, deburring, tapping, extruding, or parting to reduce downstream processing and assembly steps.
Material Expertise
Material Expertise
Experience stamping copper, brass, stainless steel, low-carbon steel, beryllium copper, and specialty alloys for electrical, medical, and aerospace applications.
Industry
Application
Precision Built for Performance Industries
Electrical & Power
• Precision-stamped copper and aluminum busbars for power distribution systems
• Contact blades, terminals, grounding clips, and fuse holders for switchgear and circuit protection
• Stamped mounting brackets and heat dissipation plates for electrical enclosures
• Contact blades, terminals, grounding clips, and fuse holders for switchgear and circuit protection
• Stamped mounting brackets and heat dissipation plates for electrical enclosures
Key Benefits
• Achieve ±0.002” critical tolerances for reliable electrical fit and clearance
• Ensure burr-free edges and plating-ready surfaces via in-die deburring and coining
• Validate electrical and thermal performance prior to full-scale production
• Ensure burr-free edges and plating-ready surfaces via in-die deburring and coining
• Validate electrical and thermal performance prior to full-scale production
Electronics & Sensors
• Stamped EMI/RFI shields, sensor lead frames, and electronic enclosures for PCB assemblies
• Battery contacts, pogo pins, spring contacts, and micro-connectors for compact electronics
• Thin-gauge shield covers and grounding tabs for portable devices
• Battery contacts, pogo pins, spring contacts, and micro-connectors for compact electronics
• Thin-gauge shield covers and grounding tabs for portable devices
Key Benefits
• Maintain tight flatness and planarity in thin-gauge materials (as low as 0.005”)
• Support micro-feature punching and fine bend radii without cracking or warping
• Enable assembly-ready parts with plating or coating compatibility
• Support micro-feature punching and fine bend radii without cracking or warping
• Enable assembly-ready parts with plating or coating compatibility
Defense & Aerospace
• Stamped shielding enclosures, lightweight brackets, avionics housings, and antenna components
• Mission-critical electrical contacts, grounding lugs, and fastener clips for aerospace systems
• Drone housings, unmanned vehicle brackets, and lightweight metal structures
• Mission-critical electrical contacts, grounding lugs, and fastener clips for aerospace systems
• Drone housings, unmanned vehicle brackets, and lightweight metal structures
Key Benefits
• Meet ITAR compliance and material traceability standards from prototype through production
• Deliver mission-critical tolerances (±0.0015”) and fatigue-resistant forming for high-stress environments
• Validate parts for thermal, vibrational, and mechanical durability testing
• Deliver mission-critical tolerances (±0.0015”) and fatigue-resistant forming for high-stress environments
• Validate parts for thermal, vibrational, and mechanical durability testing
Medical Device & Equipment
• Stamped surgical staples, precision blades, biopsy tools, and micro-stamped surgical components
• Implantable metal frames, pacemaker housings, and lead frames for medical electronics
• EMI/RFI shielding for diagnostic and imaging equipment
• Implantable metal frames, pacemaker housings, and lead frames for medical electronics
• EMI/RFI shielding for diagnostic and imaging equipment
Key Benefits
• Ensure biocompatible material handling and certified material traceability
• Achieve sharp cutting/forming edges and precision bends for critical medical geometries
• Support FDA submission and ISO 13485 compliance with documentation-ready validation
• Achieve sharp cutting/forming edges and precision bends for critical medical geometries
• Support FDA submission and ISO 13485 compliance with documentation-ready validation
Industrial Machinery
• Stamped structural brackets, mounting plates, linkages, and reinforcement clips
• Flat springs, mechanical connectors, protective guards, and enclosure panels
• Custom lever arms and machine interface components
• Flat springs, mechanical connectors, protective guards, and enclosure panels
• Custom lever arms and machine interface components
Key Benefits
• Validate mechanical strength, fatigue resistance, and load-bearing capability
• Achieve tight dimensional fit-up for assembly integration
• Reduce fabrication steps via integrated forming, coining, and hole-piercing in-die
• Achieve tight dimensional fit-up for assembly integration
• Reduce fabrication steps via integrated forming, coining, and hole-piercing in-die
Molding-Integrated Applications
• Stamped metal inserts for injection overmolding in sensors, connectors, and hybrid assemblies
• Lead frames, grounding clips, and terminal inserts embedded in plastic housings
• Metal backbones for overmolded electronics or composite structures
• Lead frames, grounding clips, and terminal inserts embedded in plastic housings
• Metal backbones for overmolded electronics or composite structures
Key Benefits
• Ensure insert dimensional tolerances and plating/adhesion compatibility with molding resins
• Reduce mold trial iterations by validating insert geometry and material prep in prototype runs
• Enable seamless integration of stamped metal components into molded assemblies
• Reduce mold trial iterations by validating insert geometry and material prep in prototype runs
• Enable seamless integration of stamped metal components into molded assemblies
Quality Systems & Compliance
ISO 9001:2015 Certified
Certified quality system ensures consistent stamping process, dimensional integrity, and traceable documentation for every lot.
ITAR Registered Facility
Qualified to stamp ITAR-controlled parts for defense and aerospace applications.
Direct Engineering Access
Collaborate directly with stamping engineers to troubleshoot, optimize, and validate designs for manufacturability.
Material Certifications & Traceability Available
Material certs and lot traceability provided to meet regulatory, medical, or defense compliance.
Featured
Case Study
THE CLIENT
Type: Manufacturer of power distribution modules and energy storage systems for industrial and EV applications
Stage: Launching a new product line for battery management systems (BMS) targeting large-scale commercial EV fleets
Team: Engineering team of 8 electrical/mechanical engineers; outsourced metal stamping and assembly; limited in-house prototyping
Primary Need: Required production-representative copper busbars to validate electrical, thermal, and assembly performance ahead of UL certification and customer pilot builds—on a compressed 4-week timeline
THE CHALLENGE
Needed 5,000 stamped copper busbars (C110, 0.080” thick) for new BMS enclosure design validation
Required ±0.002” hole-to-bend tolerance to ensure automated assembly fit and reliable electrical connections
Needed in-die deburring to eliminate manual finishing and reduce contact resistance at electrical interfaces
Project constrained by 4-week deadline to meet customer’s pilot production and third-party compliance testing
THE SOLUTION
Designed a progressive die with integrated pierce, bend, coining, and in-die deburring stations to achieve dimensional, surface, and contact spec requirements
Utilized wire EDM-cut die components and precision-ground inserts for high wear zones to maintain tolerance over the run
Performed die simulation and material flow analysis to confirm forming integrity and prevent cracking at critical bends
Built, assembled, and tested die 100% in-house; completed first-article inspection (FAIR) and CMM validation reports prior to production release
Provided DFM recommendations to optimize bend radii and hole clearances, reducing forming load by 12% and improving strip material yield
THE RESULTS
Delivered progressive die and first production lot of 5,000 busbars in 26 calendar days
Achieved 100% within-tolerance parts on first production run, meeting UL pre-certification sample requirements
Enabled customer to complete design validation and third-party compliance testing on schedule
Reduced downstream finishing cost by 30% via in-die deburring integration, eliminating manual deburring step
Tool transitioned directly into full production with no post-run modifications
Get Precision Stamped Parts—Ready for Your Production
Send us your part drawing and we’ll deliver production-grade stamped components, engineered for precision and manufacturability.