Assembly Services — Joined In-Die at Press Speed
ISTAMPING's assembly services combine precision metal stamping with automated and semi-automated assembly, so parts leave our plant as finished subassemblies. In-die assembly joins components during the stamping stroke itself, while secondary lines handle hardware insertion, riveting, welding, and stacking under one roof.
- In-die assembly
- Hardware and fastener insertion
- Insert molding and overmolding
- Material range
- Precision quality control
Fast Engineering ResponseNDA ProtectedSTEP / IGES / X_T / DWG
Trusted Tier-1 & OEM Standards:
PROCESS RISKS WE PREVENT
Assembly Services: Risks We Engineer Out
Recurring failure modes seen in incoming RFQs for assembly services — and how each is prevented on our line.
01
Component alignment in automated assembly
Our Solution
Precision tooling, checking fixtures, and vision-guided placement keep stamped components aligned at production rates, protecting joint quality and dimensional consistency.
02
Joint integrity at high production speed
Our Solution
In-line camera vision and process parameter monitoring catch staking, riveting, and welding defects the moment they appear, protecting the batch and downstream customers.
03
Mixed-material and insert assembly stability
Our Solution
Material pairing and thermal effects are managed with validated process windows and in-die positioning, so inserts, plastics, and dissimilar metals stay secure across the product life.
SERVICE SCOPE & CAPABILITIES
Assembly Services: What We Cover
ISTAMPING's assembly services combine precision metal stamping with automated and semi-automated assembly, so parts leave the plant as finished subassemblies. In-die assembly joins components during the stamping stroke itself, while secondary lines handle hardware insertion, riveting, welding, and stacking under one roof.
Capabilities
- In-die assembly
- Hardware and fastener insertion
- Insert molding and overmolding
- Material range
- Precision quality control
Applications
- Connector assemblies
- Relay and sensor components
- Terminals with inserted hardware
- Stacked busbars
- Housings with pressed-in fasteners
Equipment
- Engineering
- Tooling
- Quality
Process
- Design the joining die
- Combine stamping and assembly
- Eliminate separate handling
- Add secondary operations
- Ship finished subassemblies
DFM & ENGINEERING SUPPORT
Design for Manufacturability, Built In
Before tooling starts, our engineers review your drawing for material, tolerance, bend, and volume economics — and lock the process that will hold it across millions of strokes.
What We Review in Your Drawing
Component alignment in automated assembly
Precision tooling, checking fixtures, and vision-guided placement keep stamped components aligned at production rates, protecting joint quality and dimensional consistency.
Joint integrity at high production speed
In-line camera vision and process parameter monitoring catch staking, riveting, and welding defects the moment they appear, protecting the batch and downstream customers.
Mixed-material and insert assembly stability
Material pairing and thermal effects are managed with validated process windows and in-die positioning, so inserts, plastics, and dissimilar metals stay secure across the product life.
What Our DFM Review Checks
Bend radii
Inside radius held at R≥1.0t on spring tempers; tighter bends flagged for anneal or grade change before die design starts.
Holes & cutouts
Hole diameter ≥0.8t, pushed to 0.6t only with hardened punch steel; thin-gauge cutouts checked for tear-out.
Burr & edge quality
Burr height held under 0.05 mm so parts mate flat in assembly and plating adheres at the edges.
Tolerance & plating impact
Critical features piloted to ±0.005 mm; plating thickness (gold 2-8 µm, tin/zinc 5-12 µm) compensated in die design.
Get a DFM Review of Your Part
Send us your 2D/3D drawing — engineering runs a free DFM analysis and pricing follows the review.
STEP / IGES / X_T / DWG / PDF
TECHNICAL CAPABILITIES
Assembly Services: Specifications & Equipment
Part Specifications
| Specification Parameter | Automotive & EV Standard | High-Precision Custom |
|---|---|---|
| Assembly Processes | Threading, staking, tapping, hardware insertion, joining, stacking, welding, riveting | Per drawing |
| In-Die Assembly | Stamping + assembly in one operation | Per drawing |
| Secondary Assembly | Semi-automated assembly lines | Per drawing |
| Integration | Insert molding, overmolding | Per drawing |
Press & Equipment
Engineering
3D CAD design assistance
Tooling
In-house complex progressive tooling
Quality
In-line camera vision systems
Production Process
Design the joining die
Complex progressive tooling is built with the capability to join components during stamping production.
Combine stamping and assembly
The punch press simultaneously produces stampings and assembles components in one operation.
Eliminate separate handling
Joining happens inside the stamping stroke, eliminating separate handling and reducing total production time.
Add secondary operations
Semi-automated assembly lines complement in-die joining for parts that need secondary operations.
MATERIALS & COMPLIANCE
Materials We Stamp & Compliance Documents
Every program ships with material traceability and the quality documents buyers need for automotive and EV supply chains.
Brass
Common Alloys
Finishing
Copper
Common Alloys
Finishing
Phosphor Bronze
Common Alloys
Finishing
FULL MATERIAL RANGE
Stamping on More Than These Alloys?
Our coil inventory and in-house die experience cover the full precision-stamping material range — send the grade and gauge, and we confirm stampability before quoting.
Stamping on Your Alloy or Coating?
Send the grade, gauge and part drawing — we confirm stampability, die and feed design, and quote on 25–110T presses at ±0.005 mm.
MTC / CoC / RoHS available per lot
QUALITY ASSURANCE & INSPECTION
In-House Quality Lab, Verified on Every Lot
IATF 16949:2016 certified with CMM, optical measurement and 100% dimensional inspection at press speed.
Inspection HardwareIn-House Quality Lab
- CMM & optical measurement for flat and 3D parts
- In-line vision systems inspecting at press speed
- SPC on critical features to catch drift as a trend
Quality StandardsIATF 16949:2016 Certified
- IATF 16949:2016 automotive quality management
- ISO 14001:2015 environmental management
- PPAP documentation for automotive & EV programs
TraceabilityFull Lot Traceability
- First-article inspection against the drawing
- Lot-level material traceability back to the coil
- Inspection records on every shipment
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.
INDUSTRY CASES
Case Studies for Assembly Services
Aug 28 · 7 min read
EV Busbar Case Study: Battery Pack Interconnects
High-volume busbar stamping for EV battery pack interconnects — tolerance, plating and delivery evidence.
Aug 28 · 7 min read
Progressive Die Case Study: Automotive Terminal Program
A multi-million-piece terminal program run on progressive dies with SPC and PPAP evidence.
Aug 28 · 16 min read
EV Charging Connector Stamping Guide
How precision stamping serves EV charging connector programs — materials, tolerances and plating.
ORDERING & FAQ
How to Order Assembly Services & Frequently Asked Questions
From drawing to delivered parts: a four-step path with engineering review at the front and 100% dimensional inspection at the back — then the questions buyers ask us most.
Step 1
Submit CAD & Specs
Send 2D/3D drawings (STEP, DWG, PDF) with quantity, material, and tolerance requirements.
Step 2
DFM Feedback & Quotation
Our engineering team conducts DFM analysis and follows up with a competitive quote after the review.
Step 3
Precision Manufacturing
High-speed progressive die stamping, secondary forming, finishing, and surface treatment per your specifications.
Step 4
100% QC & Express Shipping
100% dimensional inspection, anti-corrosion packaging, and global express delivery.
What assembly operations can ISTAMPING perform?
Threading, tapping, staking, riveting, welding, stacking, hardware insertion, in-die joining, and integration with insert molding and overmolding, on automated and semi-automated lines.
What is in-die assembly?
A progressive die that joins components to the part during the stamping stroke, so the press produces and assembles in one operation at up to 300 SPM, cutting total production time.
Can you insert hardware such as nuts, studs, and fasteners?
Yes. Fasteners, screw machine parts, bushings, nuts, studs, plastic pieces, and metal inserts can be joined to stamped parts in-die or on secondary assembly lines.
What quality checks apply to assembled parts?
In-line camera vision systems verify assembled features during production, while CMM and optical measurement confirm dimensions under the IATF 16949:2016 quality system.
Do you handle prototype and low-volume assemblies?
Yes. Semi-automated assembly lines serve prototypes and low volumes, and the same tooling path scales to automated high-volume production.
Why consolidate assembly with stamping?
One supplier manages the full process from strip to finished assembly, eliminating inter-plant logistics, reducing WIP, and giving you a single point of quality accountability.
Ready to Start Your Precision Stamping Program?
Send your drawing today — engineering runs a free DFM review and detailed pricing follows the review.
100% Confidential | NDA Protected | 24H Response
GO DEEPER
Pair This Service With the Right Parts
Assemblies
Consolidate stamping, plating and assembly under one PPAP and one accountable line.
View Product Specs
Brackets
Get brackets that mate first time — hole position and flatness controlled in the die.
View Product Specs
Bus Bars
Carry the load cooler with plated contact faces on formed copper and aluminum busbars.
View Product Specs