Industry
Screws from M2 to M12 for vehicles, motorcycles and their component suppliers
Automotive & Motorcycle Why it matters
Automotive is the segment where the plant sits physically closest to its customers. The Jababeka industrial corridor in Cikarang Utara hosts vehicle assembly and a dense network of tier-1 and tier-2 component makers, and a fastener supplier that is forty minutes away instead of forty days of shipping changes what a shortage means: a top-up order arrives on the same day rather than halting a trim line.
The fastener content of a vehicle or a motorcycle is dominated by machine thread screws in the M2 to M12 band — pan and flange heads into plastic interiors, hex and flange bolts into brackets and housings, all of them expected to survive vibration, temperature cycling and a coated salt-spray specification. Our heading and thread rolling machines cover this band in volume, the mesh belt and rotary furnaces supply the hardening behind it, and the plating and precoat lines deliver the finish and the locking element that an automotive drawing usually calls out.
M2 – M12
Automotive screw band
3,000K
Carburising furnace capacity / 8 h
400K
Precoat dispensing / 8 h per machine
Same-day
Top-up supply inside Jababeka
Field problems
These are the failure modes we see most often, and the engineering response that addresses each one. Problems are stated as they appear on the line, not as they appear in a textbook.
| Problem observed | Engineering response |
|---|---|
| Fasteners loosen under sustained engine and road vibration. | Pre-applied nylon patch or micro-encapsulated adhesive is applied on our own dispensing lines — 400K pcs per 8-hour shift per machine — so the locking element arrives controlled in position and mass instead of being dispensed at the assembly line. |
| The drawing calls for a property class the part cannot reach as formed. | The mesh belt furnace runs tempering and carburising treatments for any screw size in the range, and the rotary furnace adds 3,000K pieces per 8-hour shift of carburising capacity, so the hardness is produced and verified in the same plant that forms the part. |
| Corrosion failures appear at the coating rather than the steel. | Zinc, zinc-nickel and nickel plating are verified with the in-house salt spray chamber and X-ray coating thickness gauge, and threads are re-gauged after coating so the fit survives the finish. |
| A line-down shortage cannot wait for an overseas shipment. | The plant is inside Jababeka Phase 8, next door to the component supplier base. Top-up quantities of a released part number can be produced and delivered locally instead of being ordered across a border. |
| Mixed or damaged fasteners reach the assembly line and stop the station. | Four optical separators inspect 500K pieces per 8-hour shift each, and CCD machines verify presence and orientation at packing, so what reaches the feeder is what the label says. |
| Documentation is demanded at PPAP level for a new component. | Material certificates, hardness records, coating thickness data and torque verification are produced in-house and issued per lot, with the submission level agreed at quotation. |
Specification basis
A starting specification, not a fixed menu. Most programmes adjust one or two of these after the first joint review.
Diameter band
M2 – M12 machine thread, coarse and fine pitch
Head styles
Pan, hex, flange, socket, countersunk; custom heads to drawing
Property classes
Set by drawing and verified by Vickers hardness and metallography in-house
Materials
SWRCH carbon steels, alloy steels, stainless on request
Heat treatment
Mesh belt furnace (tempering + carburising) and rotary furnace, 3,000K pcs / 8 h
Finishes
Zinc (blue-white, colour, black, green), zinc-nickel, nickel, nano coating, stoving paint
Locking
Nylon patch and micro-encapsulated adhesive, 400K pcs / 8 h per dispenser
Verification
Salt spray, X-ray coating thickness, digital torque meter, optical sorting before packing
Documentation
Material certificates, inspection records and PPAP-level submissions agreed per project
Recommended products
Chosen for the tolerance, finish and locking requirements typical of the assemblies described above.
Micro Screws · M0.8 – M12
Machine screws that engage a pre-formed thread — a tapped hole, a brass insert or a heat-set nut — and hold their clamp load through repeated disassembly, from M0.8 micro screws to M12 fasteners.
Micro Screws · From M0.8 × 1.0 mm
Screws supplied with a locking, sealing or vibration-damping element already applied — micro-encapsulated adhesive, nylon patch, sealant or damping coating, from M0.8 upward.
Thread & Panel · Sheet metal panels
Clinching nuts, studs and grounding terminals are pressed into sheet metal with a press, giving a permanent load-bearing thread in a panel that is often thinner than the thread itself.
Thread & Panel · Joint anti-loosening
Lock washers are among the core anti-loosening fasteners for robot joints and transmission systems, holding preload where vibration would otherwise relax the joint.
Thread & Panel · Lightweight joints
Cold-formed 7-series aluminium bolts that replace steel in magnesium and aluminium assemblies — removing galvanic corrosion and cutting fastener weight at the same time.
Thread & Panel · One-side access
Rivet nuts and blind rivets install from the front face only, giving a threaded or permanent joint in a closed box, cabinet or duct where the back is unreachable.
Design notes
These decisions are cheap at concept stage and expensive after tooling is cut.
01
A plated thread behaves differently from a bare one — thickness moves the fit and friction moves the preload. Specifying the finish with the screw, rather than as a later purchasing decision, keeps the torque strategy honest.
02
A precoat keeps the screw standard and adds the lock at our line; a flange or a special washer changes the part. For most automotive positions a precoat is the cheaper route, and it can be added or removed without redesigning the part.
03
Screws that form a thread in sheet metal need a hard skin over a tough core. The mesh belt and rotary furnaces are set up for exactly this case-hardening duty at volume.
04
A fastener that is 40 minutes away can be topped up in the same shift. For high-runner sizes inside the Jababeka supply base, local stock agreements are often worth more than a marginal unit-price difference.
Joint review
A drawing gives us geometry. The mating material, the service cycles and the cleaning chemistry decide whether the joint works. Send all three and we will review the whole stack.
Questions
Answers to the questions that come up most in this industry.
Related industries
The same fastener discipline applies across these industries, with different documentation and validation requirements.
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Riveting, clinching, threaded inserts and sealed screws for control cabinets, industrial enclosures and equipment that must survive a long service life in the field.
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Aluminium bolts, anti-galvanic protection, thread inserts and sealed riveting for battery packs, chassis, e-powertrain and body structures.
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Thread rolling screws, reinforcing inserts, pre-coated sealing screws and anti-galvanic protection for magnesium and aluminium die-castings that must be joined without losing the casting.
From a single prototype joint to a PPAP production launch, the same team reviews the drawing and the assembly context.
