
How ISO 898-1 Class 10.9 Bolts Prevent Fatigue Failure in Wind Turbines & Mega Bridges
Continuous cold-drawn grain boundary alignment and microstructural tempering against hydrogen embrittlement under cyclic heavy shear stress in offshore towers.
Delivering DIN, ISO, ASTM & ANSI certified high-tensile bolts, socket cap screws, and specialty alloy machine fasteners with zero-defect optical sorting and 15-day rapid global container shipping.
Manufactured to DIN, ISO, ASTM, and custom OEM prints with 100% optical camera sorting, full dimensional trace certificates, and factory-direct tiered container pricing.

Engineered for heavy machine frames, steel towers, and high-vibration automotive subframes with rolled threads.

High-tensile deep socket drive designed for precision injection molds, machine tool fixtures, and hydraulic assemblies.

Flush aerodynamic surface mounting for sliding tracks, high-precision electronic enclosures, and clean machinery panels.

Integrated load-distributing washer flange or low-profile dome heads protecting clamped sheet metal surfaces.

High-strength heavy hex connection hardware paired with ASTM A194 2H nuts and F436 washers for bridges and pre-fab steel structures.

Turnkey production from 2D/3D CAD prints (STEP/DWG) with customized knurls, step-shanks, dual threads, and exotic alloys.

ApexFast Precision Fasteners is an integrated industrial manufacturer strategically situated in Yongnian, China’s fastener manufacturing capital. With registered capital of RMB 3,000,000 and advanced multi-station high-speed formers, our direct mill output exceeds 8,000 metric tons per month across high-tensile structural bolts, machine screws, socket cap fasteners, and precision cold-formed components.
All standard items strictly comply with DIN, ISO, ANSI, ASTM, and BS standards across property classes 8.8, 10.9, 12.9, and A194 2H. Accredited under ISO 9001:2015, ISO 14001, and IATF 16949 systems, our facility operates automated high-speed dual-laser optical sorting machines and an in-house metallurgical testing center to guarantee zero-defect container export shipments to over 85 countries worldwide.
Four rigorous quality milestones engineered from raw wire rod certification to sealed container dispatch.
01 原材料检验Spectral AnalysisPrime steel coil chemical spectroscopy, metallurgical inclusion testing, and wire rod draw-annealing to ensure defect-free grain flow.
02 生产加工350 pcs/min FormingMulti-stage high-speed cold heading formers producing continuous internal grain flow, followed by high-precision circular die thread rolling.
03 质量检测< 15 PPM Laser Checked100% rotary glass plate camera screening for pitch, burrs, and head cracks, paired with salt spray corrosion and tensile proof load testing.
04 包装交付FCL Staging ReadyContinuous atmosphere quenching furnace hardening (Class 8.8-12.9) followed by robotic carton counting and seaworthy pallet wrap dispatch.
Supplying certified structural bolts, vibration-proof socket screws, and corrosion-resistant fasteners across global critical infrastructure.

Target Fasteners:
ASTM A325 / A490 Heavy Hex Structural Bolts & 2H Nuts

Target Fasteners:
DIN 912 / ISO 7380 Socket Cap & Flange Screws (< 15 PPM)

Target Fasteners:
High-Tensile Track Plate Screws & Heavy Pre-Stressed Anchors

Target Fasteners:
Grade 10.9 HDG & ZnNi Anti-Corrosive Tower Flange Studs

STEP, IGES, DXF, DWG, PDF blueprints
When standard DIN or ISO screws cannot meet your exact load requirements, our senior engineering team develops proprietary cold heading tooling and CNC secondary machining directly from your CAD prints.
Upload STEP/DWG drawings with target yield strength, hardness (HRC), and coating salt spray requirements under mutual NDA.
Finite element simulation of cold heading stages, die machining, and internal grain structure optimization.
Pre-production first-article fasteners machined and dispatched via DHL/FedEx with full CMM dimensional audit.
High-speed production run with 100% optical verification, full PPAP Level 3 documentation, and container loading.
Supplied over 2,400 metric tons of high-tensile fasteners to premier mega bridges, automotive assembly lines, and offshore installations.

Supplied 2,400 metric tons of ASTM A325 / A490 high-strength structural bolts paired with ASTM A194 2H nuts and F436 hardened washers. Treated with Hot-Dip Galvanizing (ASTM A153) to resist severe typhoon vibrations and 30-year marine splash zone salinity.

DIN 912 Class 12.9 · < 15 PPM

M36 Flange Studs · ZnNi 1500h

DIN 933 Class 10.9 Pre-Stressed

Custom Step-Shank M48 Bolts
Our quality management system is fully accredited under automotive IATF 16949 and ISO 9001:2015. We guarantee 100% metallurgical traceability with physical EN 10204 3.1 Material Test Reports (MTR), PPAP Level 3 documentation, and dual-laser optical sorting delivering an automotive defect rate < 15 PPM.




Clear answers for global fastener buyers regarding minimum order quantities, optical sorting thresholds, anti-corrosion finishes, and international container logistics.

For standard DIN/ISO precision screws and high-tensile bolts in stock, MOQ starts at 5,000 to 10,000 pcs per size. For custom OEM cold-formed prints or specialized alloy screws, tooling MOQ is typically 20,000 pcs. Free physical pre-production test samples are prepared in 3–5 business days and dispatched via express air courier (DHL/FedEx).
Yes, absolutely. Every container shipment is accompanied by a certified EN 10204 3.1 chemical composition and tensile proof-load test report directly stamped by our certified metallurgical QA lab. For automotive and Tier-1 industrial buyers, full PPAP Level 3 packages (Control Plan, FMEA, Gage R&R, IMDS) are provided.
We operate high-speed glass plate laser optical sorting machines inspecting thread completeness, head cracks, concentricity, and total length. We guarantee a defect rate below < 15 PPM, perfectly calibrated for robotic automatic feed screwdrivers on high-speed automotive lines.
We provide Cr3+ Trivalent Clear/Yellow Zinc, Hot-Dip Galvanizing (ASTM A153 / ISO 10684), Black Oxide, Geomet 500B, Dacromet, and Zinc-Nickel (ZnNi) coatings delivering 480 to 1,500+ hours neutral salt spray resistance (ASTM B117) without red rust.
We support FOB Tianjin/Qingdao/Shanghai, CIF, CFR, and DDP to your designated overseas warehouse. Standard payment terms include T/T (30% deposit, balance against Bill of Lading copy) and Irrevocable L/C at sight for established accounts. Regular FCL container lead time is 12–15 days.
Yes. Over 35% of our monthly mill volume consists of customized OEM/ODM fasteners. We sign mutual Non-Disclosure Agreements (NDA) prior to receiving proprietary 2D/3D drawings, safeguarding your intellectual property and mold tooling exclusively.
Authoritative metallurgical research, export standards, and smart fastener manufacturing insights directly from our engineering team.

Continuous cold-drawn grain boundary alignment and microstructural tempering against hydrogen embrittlement under cyclic heavy shear stress in offshore towers.

Practical compliance guidance decoding spark spectrometry chemical composition, yield strength tolerances, elongation curves, and physical heat batch validation.

Commissioning 12 high-speed multi-station forming units and automated laser camera sorting cells to elevate international direct container export capacity.
De-embrittlement baking furnace protocols (200°C–230°C for 8–14 hours) immediately post-electroplating to eliminate delayed brittle fracture risks in critical assemblies.
ApexFast will exhibit new cold-formed automotive specials, DIN 912 Class 12.9 socket screws, and negotiate direct mill FOB/CIF distribution contracts in Germany.
Full 360-degree glass plate rotary camera inspection detecting thread pitch imperfections, head runout, and burrs for automated robotic feed assembly lines.
Our technical export sales desk will calculate tiered FOB/CIF container pricing within 2 business hours.
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