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Assembly & Secondary Operations
Deliver Production-Ready Parts—Finished, Assembled, and Certified
Gromax eliminates vendor complexity by providing stamping, finishing, and assembly under one roof—reducing handling, speeding delivery, and ensuring every part meets performance, cosmetic, and compliance standards.
From deburring to plating, fastener installation to marking, we deliver fully finished, production-ready parts for seamless integration into your assembly line.
Capabilities
High-precision stamping for prototypes, pilot runs, and full-scale production.
Mechanical Assembly
Mechanical Assembly
• In-die and post-process tapping, thread forming, and riveting
• Fastener installation, pin insertion, bracket and subassembly builds
• Spot welding and laser welding for permanent joining
• Fastener installation, pin insertion, bracket and subassembly builds
• Spot welding and laser welding for permanent joining
Surface Treatments
Surface Treatments
• Plating: tin, nickel, silver, gold for conductivity and corrosion protection
• Passivation, anodizing, powder coating for enhanced durability
• Electropolishing and ultrasonic cleaning for medical-grade or cosmetic finishes
• Passivation, anodizing, powder coating for enhanced durability
• Electropolishing and ultrasonic cleaning for medical-grade or cosmetic finishes
Edge Finishing & Conditioning
Edge Finishing & Conditioning
• Deburring, tumbling, edge rolling, coining, and precision sanding
• Finishing to meet functional fit, mating surface, or cosmetic requirements
• Finishing to meet functional fit, mating surface, or cosmetic requirements
Marking & Identification
Marking & Identification
• Laser etching for logos, serialization, lot codes, and barcoding
• Part number and traceability marking to support regulated industries
• Part number and traceability marking to support regulated industries
Heat Treating & Stress Relief
Heat Treating & Stress Relief
Post-stamping heat treatment to stabilize mechanical properties and relieve forming stress in high-strength materials
Adhesive Bonding & Lamination
Adhesive Bonding & Lamination
Application of adhesive-backed components, insert bonding, or lamination for multi-material and overmold-ready assemblies
Integrated Inspection & Testing
Integrated Inspection & Testing
In-process and final CMM dimensional inspection, functional testing, and compliance validation with documentation.
Assembly Kitting & Packaging
Assembly Kitting & Packaging
Kitting of finished parts with fasteners, gaskets, or subcomponents; bagging and packaging for line-ready or installation-ready delivery
Industry
Application
Finished, Assembled, and Certified Parts for Critical Industries
Electrical & Power
• Stamped copper (C110) and aluminum (1100, 6061) busbars for low- and medium-voltage power systems
• Contact blades, fuse clips, grounding lugs, terminal connectors for switchgear and panelboards
• Brackets and support plates for electrical enclosures and power distribution units
• Contact blades, fuse clips, grounding lugs, terminal connectors for switchgear and panelboards
• Brackets and support plates for electrical enclosures and power distribution units
Key Benefits
• Achieve ±0.002” hole-to-bend tolerances for electrical clearance and assembly fit
• Integrate in-die deburring and coining to provide burr-free, plating-ready edges
• Provide tin, nickel, silver plating in-house for conductivity and corrosion resistance
• Support serialized laser marking and lot traceability for UL, RoHS, REACH compliance
• Integrate in-die deburring and coining to provide burr-free, plating-ready edges
• Provide tin, nickel, silver plating in-house for conductivity and corrosion resistance
• Support serialized laser marking and lot traceability for UL, RoHS, REACH compliance
Electronics & Sensors
• EMI/RFI shielding covers and enclosures for PCB assemblies and control modules
• Stamped sensor lead frames, carrier strips, and thermal management shields
• Battery contacts, pogo pins, micro-formed spring contacts for portable electronics
• Stamped sensor lead frames, carrier strips, and thermal management shields
• Battery contacts, pogo pins, micro-formed spring contacts for portable electronics
Key Benefits
• Maintain ±0.0015” critical feature tolerances in thin-gauge brass, phosphor bronze, and stainless steels (0.003”-0.020”)
• Deliver passivated or electropolished surfaces to improve conductivity and corrosion protection
• Enable laser marking, serialization, and barcode application on small form factor components
• Validate flatness, coplanarity, and bend radii to ensure PCBA and overmolding compatibility
• Deliver passivated or electropolished surfaces to improve conductivity and corrosion protection
• Enable laser marking, serialization, and barcode application on small form factor components
• Validate flatness, coplanarity, and bend radii to ensure PCBA and overmolding compatibility
Defense & Aerospace
• Shielded enclosures, avionics brackets, lightweight structural clips for aerospace electronics
• Grounding terminals, antenna components, communication module housings for military systems
• Drone airframe brackets, UAV control enclosures, and unmanned systems hardware
• Grounding terminals, antenna components, communication module housings for military systems
• Drone airframe brackets, UAV control enclosures, and unmanned systems hardware
Key Benefits
• Provide ITAR-compliant, DFARS-certified material sourcing and traceable lot control
• Deliver MIL-spec plating (nickel, tin, cadmium) and laser-marked serialization for defense contracts
• Meet ±0.0015” critical dimension tolerances for mission-critical applications
• Support environmental testing (thermal, vibration, salt fog) with validated surface finishes and assembly integrity
• Deliver MIL-spec plating (nickel, tin, cadmium) and laser-marked serialization for defense contracts
• Meet ±0.0015” critical dimension tolerances for mission-critical applications
• Support environmental testing (thermal, vibration, salt fog) with validated surface finishes and assembly integrity
Medical Device & Equipment
• Surgical staples, precision cutting blades, micro-stamped biopsy and endoscopic tools
• Implantable metal frames, pacemaker lead housings, neurostimulation device components
• EMI shielding for diagnostic equipment enclosures and imaging electronics
• Implantable metal frames, pacemaker lead housings, neurostimulation device components
• EMI shielding for diagnostic equipment enclosures and imaging electronics
Key Benefits
• Perform passivation, electropolishing, and ultrasonic cleaning per ASTM F86, ISO 13485 standards
• Ensure biocompatible material handling (316L stainless, titanium grades 2/5, MP35N alloys)
• Deliver ±0.001” edge and bend tolerances with burr-free, smooth finishes for patient-contact safety
• Provide full material certs, FAIR documentation, and traceable lot reports to support FDA submission and CE marking
• Ensure biocompatible material handling (316L stainless, titanium grades 2/5, MP35N alloys)
• Deliver ±0.001” edge and bend tolerances with burr-free, smooth finishes for patient-contact safety
• Provide full material certs, FAIR documentation, and traceable lot reports to support FDA submission and CE marking
Industrial Machinery
• Structural brackets, reinforcement plates, heavy-duty flat springs, linkage arms for automation equipment
• Mounting panels, enclosures, machine guards, formed mechanical connectors for industrial systems
• Custom lever arms and tab assemblies for conveyor and material handling machinery
• Mounting panels, enclosures, machine guards, formed mechanical connectors for industrial systems
• Custom lever arms and tab assemblies for conveyor and material handling machinery
Key Benefits
• Validate mechanical strength and fatigue resistance through die-integrated forming and coining
• Provide powder coating, anodizing, or passivation for corrosion protection in harsh environments
• Enable pre-installed PEM hardware, tapped holes, and welded subassemblies to reduce fabrication time
• Achieve ±0.002” positional tolerances for assembly-critical features
• Provide powder coating, anodizing, or passivation for corrosion protection in harsh environments
• Enable pre-installed PEM hardware, tapped holes, and welded subassemblies to reduce fabrication time
• Achieve ±0.002” positional tolerances for assembly-critical features
Molding-Integrated Applications
• Stamped metal inserts for injection overmolding in sensor housings, connectors, hybrid plastic-metal components
• Lead frames and terminal inserts embedded in automotive, electronic, or appliance overmolded assemblies
• Metal skeletons and conductive backbones for structural composite overmolding
• Lead frames and terminal inserts embedded in automotive, electronic, or appliance overmolded assemblies
• Metal skeletons and conductive backbones for structural composite overmolding
Key Benefits
• Ensure insert dimensional tolerances and plating adhesion compatibility with thermoplastics (e.g., nylon, PPS, PBT)
• Validate geometry for mold cavity fit and material flow via prototype and pilot stamping
• Provide production-representative stamped inserts with pre-applied plating or surface treatments
• Reduce mold iteration cycles and rework risk by delivering fully validated insert geometry
• Validate geometry for mold cavity fit and material flow via prototype and pilot stamping
• Provide production-representative stamped inserts with pre-applied plating or surface treatments
• Reduce mold iteration cycles and rework risk by delivering fully validated insert geometry
Quality Systems & Compliance
ISO 9001:2015 Certified
Certified quality management system covering stamping, secondary operations, mechanical assembly, and finishing processes to ensure consistent production, documented inspection, and continuous improvement.
ITAR Registered Facility
Authorized under International Traffic in Arms Regulations (ITAR) to handle and process controlled defense and aerospace components with secure documentation and traceable workflows.
FAIR, PPAP, and Traceability Documentation
Provide First Article Inspection Reports (FAIR per AS9102/ISO standards), Production Part Approval Process (PPAP Levels 1-3) documentation, and lot-level material and process traceability to support customer validation, regulatory compliance, and quality audits.
Process Validation & Testing
Offer process validation and verification including capability studies (Cp, Cpk), dimensional inspection (CMM reports), functional/mechanical testing, and material certification (ASTM, AMS, ISO standards) to meet industry-specific compliance (e.g., FDA, ISO 13485, AS9100, IATF 16949).
Featured
Case Study
THE CLIENT
Type: Major Tier-1 defense contractor supplying subassemblies for secure military communications and avionics systems
Stage: Preparing for LRIP (Low-Rate Initial Production) on a new encrypted field communication module for U.S. military deployment
Team: Cross-functional team of 6 design engineers, 2 manufacturing engineers, and 1 quality manager coordinating with multiple approved suppliers
Primary Need: Deliver a fully finished EMI shield cover—stamped, plated, fastener-installed, serialized and marked—meeting MIL-STD-130 identification, ITAR control, and DFARS material compliance within a 6-week qualification deadline to support First Article Inspection and initial production approval
THE CHALLENGE
Required a stamped aluminum EMI shield (5052-H32, 0.040” thick) with:
• 4 PEM fasteners pre-installed for automated chassis assembly
• Nickel plating per MIL-DTL-26074, Class 1, Grade A for conductivity and corrosion resistance
• Laser-etched marking per MIL-STD-130 including NSN, CAGE code, and serialization
Needed to hold ±0.002” hole-to-bend tolerance for precise fit in enclosure assembly
Had to eliminate post-processing steps to reduce supplier chain delays and maintain ITAR-controlled workflow
THE SOLUTION
Gromax engineered a progressive die integrating in-die piercing, coining, and deburring to achieve plating-ready, burr-free edges meeting plating adhesion specs
Performed die simulation to validate material flow and eliminate stress cracking at bends under tight radii
Completed stamping, nickel plating (MIL-DTL-26074), PEM fastener insertion (per NASM45938), and laser marking (MIL-STD-130 UID format) entirely in-house under ITAR control
Delivered First Article Inspection Report (FAIR per AS9102) with complete CMM dimensional validation, material certs, plating cert, fastener lot traceability, and serialization record
THE RESULTS
Eliminated two outside vendors (plating and fastener insertion) previously used in prototype builds
Delivered FAIR-approved, LRIP-ready parts 10 days ahead of deadline to support production readiness review
Reduced total lead time by 38%, eliminated logistics risk, and consolidated all compliance documentation under a single supplier
Enabled customer to proceed directly to pilot build with approved production process and documented traceability
Get Production-Ready Parts—No Extra Processing Needed...
From stamping to plating, marking to assembly—Gromax simplifies your supply chain.