Embodied Intelligence
Keeping play out of a finger joint
Play in a dexterous finger usually starts at the pivot, not at the screw thread. A short engineering look at why a shoulder screw behaves differently from a plain screw in a rotating joint.
PT. TOPRECISION FASTENING INDONESIA
Precision Screws M0.8–M12
Manufacturer in Indonesia
Machine thread, self-tapping and precoated screws from M0.8 to M12 — forged, heat treated, PVD finished and optically sorted at one plant in Jababeka Phase 8, Bekasi, for consumer electronics, automotive and robotics.
- Cold heading, thread rolling, heat treatment and PVD finishing under one roof
- 100% optical inspection on every batch, down to M0.8
- ISO 9001 & IATF 16949 management systems
Why the fastener decides
In a miniature assembly, the fastener is the only part
that is designed, made, finished, stored and driven
under conditions nobody else in the product sees.
A phone has a fixed stack height long before anyone specifies a screw. A dexterous finger has a bore tolerance and a load direction before anyone chooses a pin. The fastener arrives last, works hardest, and is the cheapest part to get wrong — which is exactly why getting it wrong is expensive.
Our position is focused on purpose: screws from M0.8 to M12, for consumer electronics, automotive and the joints of humanoid robots. And every process that decides whether the part works — die, form, thread, heat, finish, sort — is at one address, so no handover sits between the decisions.
ISO 9001
Quality management system
IATF 16949
Automotive quality management
ISO 14001
Environmental management
ISO 45001
Occupational health & safety
IECQ QC 080000
Hazardous substance process management
Management systems operated within the group. Certificates are site- and scope-specific — the certificate for your scope is issued on request.
Product catalogue
Fourteen families, one discipline
Precision screws from M0.8 to M12, then pins, inserts and panel hardware. Each family page carries the material, drive and finish range we actually produce.
Precision Screws
Machine thread M0.8 – M12, self-tapping and precoated micro screws.
Machine Thread Screws Precision machine screws from M0.8 to M12 for tapped holes, inserts and repeated service M0.8 – M12 
Self-Tapping Micro Screws Thread-forming screws that cut their own thread in plastic and thin sheet M1.0 – M2.0 
PVD Coated Screws Decorative and wear-resistant vacuum coatings that keep the thread in tolerance M1.0 – M2.0 
Precoated Screws Locking, sealing and damping elements applied at the factory, not the line From M0.8 × 1.0 mm Pins & Spacers
Pivot, locating and board-level hardware.
Rod End Bearings Articulated joints for linear actuators and linkage structures Actuator & linkage joints 
Standoffs & PCB Hardware Board stacking, soldered threads and high-current terminals Board-level hardware Thread & Panel
Inserts, riveting, captive and lightweight bolting.
Clinching Nuts & Studs A permanent thread pressed into sheet metal, with no welding and no rivet Sheet metal panels 
Rivet Nuts & Blind Rivets Threaded and permanent joints installed from one side of the panel One-side access 
The heading hall at Jababeka Phase 8 — 21 machines, 10,000–15,000 pcs per hour on the miniature lines
Focus industries
The industries that shape the engineering
Not a claim of coverage — a statement of where the tooling, the finishes and the design work are concentrated.
01
Consumer Electronics
Our core business: machine and self-tapping screws, PVD finishes and precoated locking for phones, wearables, boards and precision modules.
Read the handbook
02
Automotive & Motorcycle
Machine thread and flange screws, heat treated and coated, for automotive and motorcycle assemblies produced in and around the Jababeka industrial corridor.
Read the handbook 03
Embodied Intelligence
Shoulder screws, thread inserts, high-strength screws and rod end bearings for the joints, frames and transmission systems of humanoid robots and dexterous hands.
Read the handbookManufacturing
Eight steps, one address
From the die that sets the head form to the sorter that decides what ships. Nothing is handed to a subcontractor between these steps.
09 Laboratory Eleven instrument types, in the same building as the press — measurement closes the loop on every step above. Enter the laboratory →
Process control
The die decides, the sorter verifies
Every characteristic of a cold-formed screw is set by the die that formed it — head diameter, head height, recess geometry, concentricity. That is why the die shop is in the same building: when a sample needs a different head height, the geometry can be changed and re-tried inside the development cycle instead of queuing at an outside toolmaker.
At the other end, every part passes the sorter before packing. At M1 a defective screw is not a part that fails a test — it is a part that jams a feeder or cams out a driver, and the cost of that stoppage is what makes sorting a production step rather than a final inspection.
- In-house die design, manufacture and maintenance
- Thread rolled after forming, gauged and re-gauged after coating
- Heat treatment with hydrogen relief after plating
- Eleven instrument types in the inspection laboratory
Engineering services
Six services, from prototype to after-sales
The technical work starts before the drawing is frozen, because that is where most of the cost is locked in.
01
Rapid Prototypes
Fastest 1 day with all processes in-house, maximum 1 week when some steps are outsourced.
Learn more02
Professional Design Consulting
Concept to product, collaborative design, fastener database, 2D/3D support and simulation.
Learn more03
Professional Testing
Composition, dimensional, friction coefficient, salt spray, SMT soldering, hardness and tensile.
Learn more04
Teardown & Analysis
Joint and independent teardown with a written report and consolidation proposals.
Learn more05
Continuous Process Improvement
Cold forming instead of machining, parameter tuning and multi-part consolidation.
Learn more06
Professional Training
Manufacturing process, quality planning, basic and advanced design and selection.
Learn moreApplication notes
The mechanism before the part
Three engineering analyses of failure modes that appear in miniature joints — written to be used at the drawing stage.
Consumer Electronics
When the stack height is already fixed
In a thin device the fastener is usually the last thing chosen and the first thing that has to give. How head form and drive choice recover height without changing the screw diameter.
New Energy Vehicles
Why a hot joint loses preload
A joint that holds torque on the bench can relax in service, because steel and aluminium expand at different rates. What the material choice does to preload at temperature.
Management systems
Quality, environment and safety
The systems operated within the group. Certificates are site- and scope-specific and are issued on request rather than summarised here.
ISO 9001
Quality management system
IATF 16949
Automotive quality management
ISO 14001
Environmental management
ISO 45001
Occupational health & safety
IECQ QC 080000
Hazardous substance process management
Technical articles
Engineering writing
Principles, not sales claims: torque windows, finish selection, thread choice, corrosion and sealing.
20 October 2026 The torque window on a micro screw, and why it is so narrow Below M2 the gap between a joint that holds and a thread that strips is small. Here is the mechanics behind the window, and the three variables that actually set it. Engineering
8 October 2026 Choosing a fastener finish: corrosion, colour or dimensions Zinc, zinc-nickel, nickel, passivation and PVD do different jobs. Picking one for the wrong reason is how a joint ends up either rusty or out of tolerance. Materials
24 September 2026 Thread-forming or thread-cutting: the choice that decides your boss Both remove the insert, but they stress the plastic differently. The wrong choice shows up as a cracked boss, not as a failed screw. Engineering
10 September 2026 Galvanic corrosion: why a steel bolt eats a magnesium casting The corrosion happens at the interface, and the part that disappears is the expensive one. A look at the mechanism and the two ways to design it out. Materials
Frequently asked
Questions we are asked before an RFQ
Answered from the plant rather than from a marketing brief. If an answer depends on your drawing, it says so.
What sizes do you manufacture?
Machine thread screws run from M0.8 to M12 — the M0.8–M3 band on dedicated miniature heading lines and the M3–M12 band on the larger heading and thread rolling machines. Self-tapping screws cover M1.0–M2.0, PVD coated screws M1.0–M2.0, and precoated locking is available from M0.8 × 1.0 mm.
Where is the plant, and what happens there?
The plant is at Jl. Tekno Industri 1, Blok A2B No. 2, Kawasan Industri Jababeka Phase 8, Tanjungsari, Cikarang Utara, Kabupaten Bekasi 17530, Indonesia. Established in August 2024 with registered capital of Rp 10 billion, it operates a factory of approximately 2,000 m². Tooling, cold forging, thread rolling, heat treatment, finishing including PVD, automatic assembly and optical sorting all sit at this one address, so a lot does not travel between sites between processes.
How fast can you supply a prototype?
One day is achievable when every process is in-house, and one week is the outer limit when some steps have to be outsourced. Samples come either from stock where a standard part is close enough, a functional replacement from stock, or CNC machining where the geometry is new.
Can you work from a 3D model?
A model is enough to start the review, but production needs a drawing that states material, surface treatment, thread class and the tolerances that matter. If you only have a model, the specification is drafted for you to confirm before a die is cut.
Which materials and finishes can you supply?
Carbon steel SWRCH10A, SWRCH18A and SWRCH22A; stainless SUS302HQ, SUS304, SUS316 and SUS410; titanium TA2; and brass. Finishes include zinc in several colours, zinc-nickel, nickel, passivation, nano coating, stoving paint and PVD in ten standard tones. SUS302HQ, 304 and 316 are low-magnetism and TA2 is non-magnetic.
Which drive and head styles are available?
Drives: Phillips, TORX®, TORX PLUS®, hex socket, slotted, Tri-wing, Y-type, Pozidriv and double-cross. Heads: countersunk (F), small pan (P) and pan or oval (C). The combination is chosen with the stack height and the production driver in mind, because a drive that works by hand can cam out on an automated line.
What is your quality system status?
The management systems operated within the group are ISO 9001, IATF 16949, ISO 14001, ISO 45001 and IECQ QC 080000. Certificates are site- and scope-specific, so the certificate covering a particular plant and product scope is issued on request rather than summarised on a web page.
Can fasteners be sealed to IP68?
Yes — by pre-coating the head or the thread, by fitting a sealing ring, or by using a sealed clinching stud, sealed rivet nut or sealed blind rivet. Which one applies depends on whether the joint will be opened again and on which side of the panel is accessible.
Which industries do you serve?
Eight segments have dedicated handbooks: consumer electronics, automotive and motorcycle, robotics (embodied intelligence), HPC and AI servers, industrial electronics and home appliances, new energy vehicles, light alloy die-casting and the low-altitude economy. Consumer electronics, automotive and robotics are the three the plant is built around.
Send the drawing, get an engineering answer
Part number, material, finish and the joint conditions are enough to start. The reply comes from the plant, not from a call centre.