Hex Head Bolts — DIN 933 / ISO 4017
Fully threaded hex bolts in property classes 8.8 to 12.9, cold- or hot-forged and heat treated in house.
SpecificationsPrecision fasteners, machined parts and metal components — engineered to your drawing, delivered to schedule. We manufacture in Ningbo for industrial and automotive buyers across Europe and North America, and we document every lot so your incoming inspection does not have to guess.
Reply within one business day. No minimum order on samples.
Most buyers we work with were previously sourcing the same part from three vendors. Consolidating the route to one factory removes the tolerance argument between them.
High-tensile bolts, nuts and anchors produced to DIN, ANSI and ISO standards, with heat-number traceability and full EN 10204 3.1 documentation on request.
Turned and milled components held to tight tolerances on multi-axis lathes and machining centres, with first-article inspection and full dimensional reports.
Progressive-die stampings, laser-cut blanks and formed brackets from 0.3 mm to 8 mm, with tooling designed, built and maintained in house.
Investment castings and closed-die forgings for load-bearing applications, supplied machined and surface-finished as a single delivered part number.
Adaptors, elbows and push-in connectors rated to 420 bar, machined from bar stock and pressure-tested before dispatch for mobile and industrial fluid power.
Multi-part welded and mechanical assemblies delivered as one part number, with kitting, labelling and packaging configured for your production line.
Representative parts from each process. Anything on this list can be modified to your drawing.
Fully threaded hex bolts in property classes 8.8 to 12.9, cold- or hot-forged and heat treated in house.
SpecificationsCold-formed flange nuts with serrated bearing face for vibration resistance without a separate washer.
SpecificationsMulti-diameter shafts turned and ground to ±0.010 mm, with the option of hardened and ground bearing seats.
SpecificationsEnclosures and gearbox housings milled on 5-axis centres, with bores and seal faces finished in a single fixturing.
SpecificationsLaser-cut, formed and passivated brackets in 304 and 316L, from 1.5 mm to 6 mm, with weld-free folded construction where possible.
SpecificationsStraight, elbow and tee adaptors in BSP, NPT, JIC and metric threads, rated to 420 bar and 100% pressure tested.
SpecificationsEvery lot carries a heat number linked to the mill certificate. Ask a question about a shipment from three years ago and we can answer it from the record.
Capability studies on the dimensions that drive your stack-up. If Cpk is above 1.33 we will not tighten a tolerance to look better on paper.
Material certificates, dimensional reports, plating thickness, first-article inspection on new parts. One PDF per lot, not a request form.
FOB Ningbo as standard, DDP on request. Returnable racks, VCI packaging and line-side kitting for high-run production accounts.
A cheap part with no traceability costs more than it saves the first time a customer audits you. Our documentation package is standard, not an upgrade.
Copies of current certificates are issued with quotations on request. We hold ISO 9001:2015 and ISO 14001 through TÜV SÜD, with IATF 16949 transition in progress.
| Inspection equipment | Qty | Capacity |
|---|---|---|
| Coordinate measuring machines | 3 | 700 × 1000 × 600 mm |
| Optical profile projectors | 4 | Ra 0.4 surface, thread forms |
| Tensile and hardness testers | 8 | Up to 600 kN |
| Salt spray chambers | 2 | ASTM B117, 1000 h |
| Optical sorting machines | 4 | 100% dimensional screening |
STEP file, PDF drawing or a physical sample. Tell us the annual volume and the standard the part has to meet.
We flag anything that will cost you money — tolerances that do not need to be there, features that force a second operation, material choices that limit supply.
Not a number in a table. You get the manufacturing route, the tooling position and the lead time behind the price.
First article with a full dimensional report. PPAP Level 3 on request for automotive and regulated accounts.
Process locked, documentation on file, reorder without re-qualification. Capacity is held for repeat OEM accounts.
Roughly 70% of output is exported. English-language technical and commercial contact throughout, no relay through a trading desk.
Industrial equipment and automotive tier-2
Agricultural and material-handling OEMs
Hydraulics and offshore suppliers
Packaging machinery builders
White goods and appliance components
Heavy truck and trailer builders
Practical writing on sourcing, tolerancing and process selection — the questions that come up in the first three months of a supplier relationship.
An EN 10204 3.1 certificate is not a quality guarantee — it is a traceability document. Here is what each line actually tells you, and the three omissions that should send an order back.
Read articleEvery part passes inspection and the assembly still will not close. The cause is almost always the difference between worst-case and statistical stack-up — and which one your drawing actually calls for.
Read articleMost quotes come back higher than they need to be because of five design decisions made before anyone talked to a manufacturer. Fix these first and you will get a lower quote without negotiating.
Read articleSend a STEP file or a PDF drawing with your annual volume. Technical review within one business day, indicative pricing within three.