BOM and incoming control
We consolidate the parts on the build, check the incoming lots against their drawings and keep the traceability between the components and the finished unit.
Build the assembly, not just the parts.
Some buyers do not want another parts supplier. They want the assembly, or the complete build, to arrive finished, tested and ready for their label. We take the bill of materials, the joining, the test and the packing under one contract.
- One contract for parts and build
- Joining and test under one route
- Higher engineering load, stated up front
At a glance
- Stage
- Serial production and build
- Input
- BOM, drawings, build and test specification
- Output
- Finished, tested assemblies or builds
- Next step
- Call-off, replenishment or new variant
Why this service exists
A parts order stops at the loading dock. A contract build carries the incoming parts, the assembly sequence, the joining method, the test and the packaging. It removes the coordination between several suppliers from your line.
It also carries more risk, so the scope has to be explicit. We agree the build specification, the test method, the acceptance criteria and the change-control route before the first unit is made.
What the build covers
Assembly and joining
Riveting, welding, brazing, screwing, insert moulding and harness routing are specified in the build instruction, with the tooling and torque or pull values recorded where they matter.
Test and acceptance
The test is agreed before the build: continuity, hi-pot, millivolt drop, pull test, dimensional check or a functional check. The unit is not shipped on an assumption.
Packing and identity
The finished unit is packed to the agreed standard, labelled and shipped with the build record. Where the buyer's label or serialisation applies, it is part of the build instruction.
How a contract build runs
The build is quoted as a build, not as a sum of parts.
01
Build review
We review the BOM, the assembly drawing, the test specification and the volume. The build boundary is written down: what we make, what you supply, what we test.
02
Prototype build
A small build proves the sequence, the fixtures and the test before the line is set. The first unit is inspected and approved against the build specification.
03
Production and control
The build runs to the instruction. Critical joins and tests are recorded. Changes to a part, a process or a supplier go through the agreed change route.
04
Test, pack, ship
Each unit or lot is tested to the agreed plan, packed to the agreed standard and shipped with the build record.
Parts supply or contract build
Scope
Parts supply
The parts on the drawing
Contract build
The parts, the build and the test
Incoming control
Parts supply
Your line checks the parts
Contract build
We control the incoming lots
Joining
Parts supply
Your process
Contract build
Specified and recorded in the build
Test
Parts supply
Your test
Contract build
Agreed test and acceptance record
Commercial
Parts supply
Price per part
Contract build
Price per build, quoted separately
What you send
- The assembly drawing and the bill of materials.
- The build instruction, torque or pull values and the test specification.
- The acceptance criteria and the packaging or labelling requirement.
- The volume, the call-off pattern and the Incoterm.
What you get
- Finished, tested assemblies or builds.
- A build record tied to the component lots and the test result.
- Packing and labelling to the agreed standard.
- One contract and one point of contact for the build.
Limits, stated plainly
- We do not take over the product design or the regulatory approval of the finished equipment.
- The build scope is agreed in writing. A part or operation outside that scope is quoted before it is added.
- Where the buyer supplies components, the incoming quality and traceability terms are agreed before the build.
Where it fits
The service is used with these products and the tools that support the drawing.
Questions buyers ask
What kind of assemblies do you build?+
Electrical and electromechanical assemblies: busbar and braid assemblies, contact and spring assemblies, terminal and wiring assemblies, insert-moulded parts and builds that combine stamped, machined, moulded and wound parts. The scope is confirmed against the drawing and the test.
Can you use components we supply?+
Yes, where the incoming quality and traceability terms are agreed. We need the component drawing, the lot identification and the acceptance route before the build starts.
Who owns the build specification?+
You own the product and the acceptance criteria. We write the build instruction and the control plan against them, and you approve both before production.
Is contract manufacturing quoted as parts plus assembly?+
It is quoted as a build, with the material, components, conversion, test and packing visible separately. That makes the build comparable with your current route instead of hiding it in a part price.
Can you take a small build?+
Yes. A prototype or pilot build is often the right first step. The build quantity and the economics are confirmed before the order.
Send the drawing
Email us at contact@qumek.com. We respond within 12 hrs.
Your enquiries are confidential with us and we proceed with manufacturing only after signing a NDA.