Assemblies — One Quality System, End to End
Assemblies are complete finished products or sub-assemblies built from multiple stamped components joined together - often combining metal stampings with plastic parts, hardware and inserts.
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Trusted Tier-1 & OEM Standards:
Performance
TURNKEY ASSEMBLY CAPABILITY
Within our in-die assembly process, presses simultaneously produce stampings and assemble components in one operation, reducing total production time. Stamped parts can also be produced in one operation and then placed in a secondary operation to assemble or insert components. Assembly processes include threading, staking, tapping, hardware insertion, press-fit joining, stacking, welding, riveting and insert molding - so stamped part assembly ships as a tested unit, not a bag of components.
By consolidating stamping, managed plating, assembly and insert molding under one quality system, ISTAMPING eliminates tolerance stack-up between vendors and streamlines your supply chain into a single turnkey supplier.
From automotive sub-assemblies to EV busbar assemblies with molded housings, we produce high-volume oem metal stamping parts and metal parts assembly with 100% quality assurance and competitive cost.
Materials
Common Materials
- Cold-rolled Steel
- Stainless Steel SUS301 / 304
- C26000 / C36000 Brass
- C1100 Copper
- Aluminum 5052 / 6061
- C5191 / C5210 Phosphor Bronze
Specifications
Technical Specifications
Components per assembly
2 – 40 stamped + fastened parts
Material thickness
0.10 – 3.0 mm
Joining methods
Riveting, welding, press-fit, adhesive
Positioning precision
±0.005 mm
Insert molding
Overmolded terminals & bushings
QC
100% vision + functional test
Product Range
Types of Assemblies We Produce
The form factors below are the ones we run most often on coil-fed progressive dies — tell us yours if it is not listed.
QUALITY ASSURANCE & INSPECTION
Rigorous Precision Inspection & Quality Control Standards
Inspection HardwareHigh-Precision Testing Equipment
- ZEISS CMM for complex 3D contours
- Nikon optical projector & tool presetters (0.001 mm resolution)
- Vickers hardness testers & surface roughness gauge
Quality StandardsInspection Built Into Every Run
- 100% critical dimension inspection before packaging & shipment
- Concentricity & runout verification under optical magnifiers
- Surface micro-scratch & polish quality double-check
Material ComplianceFull Material & Heat Treatment Traceability
- Spectrometer material composition analysis report provided
- Original Mill Test Certificate (MTC) & heat treatment logs
- RoHS & REACH environmental compliance statements
Talk to Our Engineers About Quality Documentation
Tell us what your project requires, and our team confirms which inspection and material documentation can be included with your quote.
Manufacturing Process
How We Manufacture Assemblies
From drawing review to delivered parts — die design, stamping, plating and inspection records all owned in-house.
Design & Engineering
We review the full assembly drawing - stamped components, joining methods, hardware and tolerances - to plan a manufacturing sequence that consolidates stamping, managed plating and assembly under one quality system.
Progressive Die Tooling
Precision progressive dies are built in-house to stamp the individual components, with in-die assembly options that join parts in the same press stroke sequence.
High-Speed Stamping
Components are stamped in high volume with in-process monitoring, holding ±0.005 mm precision on piloted features before assembly.
Secondary Assembly
Threading, staking, tapping, hardware insertion, riveting, welding and insert molding are performed in-die or in dedicated assembly cells with vision-verified joints.
Joining Method Selection
Each joint is specified against load, conductivity and cycle requirements: riveting and press-fit for mechanical retention, resistance and laser welding for current-carrying joints, adhesive where dissimilar materials cannot be heat-affected, threaded inserts and bushings where the assembly meets a fastener. Tolerance stack-up across the joint chain is reviewed at DFM, not discovered at first article.
Applications
Where Assemblies Are Used
Each card opens the industry page for that application — programs, materials and controls by sector.
Automotive
Automotive & mobility sub-assemblies (structural, powertrain-adjacent) — The automotive industry is our most demanding and most important market.
E-Mobility / Electric Vehicles
EV battery & busbar assemblies with molded housings — The electric vehicle revolution is redefining precision manufacturing.
Appliance
Appliance & white-goods assembled modules — Home appliance manufacturers require high-volume stamped components that balance cost, quality and reliability…
Electrical
Industrial equipment & enclosure assemblies — Electrical metal stamping for power distribution - copper and aluminum busbars, silver and nickel plated contacts…
Electronics
Electronics & connector sub-assemblies — Consumer and industrial electronics require ever-smaller, ever-more-precise stamped components…
Medical
Medical & sensor integrated stamped parts — Medical metal stamping for sensor components, surgical instrument parts and device contacts…
In-House Tool Room
Made in Our Own Tool Room
Every progressive die behind our stamped parts is 100% in-house stamping tooling — design, machining, assembly and T1 trial all under our roof. That is why tooling issues get solved on the shop floor in hours, not by email exchange with an outside die shop.
±0.001 mm Achieved
Combined machining accuracy down to ±0.001 mm, Ra0.05 µm surfaces and Ø0.05 mm micro end mills for tight die features.
30 In-House Machines
30 die-making machines — wire EDM, CNC and precision grinding — keep every die build and repair on our own schedule.
2–5 Weeks for Stamp Dies
Typical stamping die delivery in 2–5 weeks, with T1 trials run on our own presses before you commit to volume.
One Accountable Chain
Self-designed progressive dies, machined in-house, run at 60–300 SPM with CCD inline inspection — no outsourced-die handoff where quality falls between suppliers.
INSIDE THE PLANT
Inside Our Stamping Line
Real equipment and inspection floor from our Dongguan plant — 25–110T high-speed presses, in-house tool room, and a CMM lab running first-article inspection on every program.
Engineering Support
Design-for-Manufacturability Support
Our engineers review your assembly at the quoting stage - component count, joining methods, tolerance stack-up and plating sequence - and recommend design-for-manufacturability adjustments that reduce tooling cost, shorten lead time and improve joint reliability in the field.
FAQ
Questions Buyers Ask
Straight answers on materials, plating, supply format, quality and timing — send your drawing for anything specific.
What types of stamped assemblies do you build?
We build multi-component stamped assemblies - terminal and connector sub-assemblies, insert-molded parts, busbar assemblies, and welded or riveted bracket assemblies - combining stamping, plating and secondary operations in one facility.
Can you do insert molding or overmolding on stamped parts?
Yes. We integrate stamped metal contacts and terminals with plastic housings through insert molding and overmolding, producing finished connector assemblies that ship ready for installation.
How do you control quality across multiple components?
Every program begins with a feasibility review and run-at-rate study. In-line camera vision and sensor inspection track each component and the assembled unit, supporting zero-defect, high-volume delivery under IATF 16949.
What are typical lead times for assemblies?
Prototype assemblies can be turned around in 2–3 weeks; production lead times depend on tooling complexity, molding requirements and volume. Send us your drawings for a firm schedule.
How tight are tolerances across a multi-part stamped assembly?
Individual stamped components hold ±0.005 mm on piloted features; the assembly tolerance is the stack of component and joint tolerances, so we run a stack-up analysis at quoting and call out the joints that need in-die or fixture control.
What drawing file formats do you accept?
PDF, STEP, IGES, DWG or DXF — send whatever you have with material, annual volume and target tolerance, and your drawing goes straight to our engineering team for a DFM pass. No finished drawing yet? A photo of the part or a sketch with a few key dimensions is enough to start.
NEXT PROGRAM
Spec Your Next Part Here
Sibling part families on the same presses, dies and quality system — one RFQ covers the mix.
Terminals
Spec your terminals on ±0.005 mm dies with selective plating right on the contact faces.
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Wire & Cable Connectors
Hold crimp integrity with fine-pitch dies and plated contact faces, reel-packed.
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Brackets
Get brackets that mate first time — hole position and flatness controlled in the die.
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