Direct factory supply of high-strength fasteners, custom-engineered components, and standard-compliant washers for heavy industry.
The DIN 933 standard specifies the dimensional profiles, tolerances, and thread details for metric hexagon head cap screws featuring full threading (fully threaded shank) from the base of the head to the tip of the bolt. Commonly deployed in heavy machinery, petrochemical pipelines, wind turbine construction, and civil infrastructure, these structural elements offer outstanding tensile hold and reliable shear performance under extreme dynamic loads.
Unlike DIN 931, which features a partially unthreaded shank, DIN 933 is engineered to provide maximum load transfer throughout the entire length of the component, allowing structural connections to distribute load forces equally without localized fatigue failure. High-quality production demands precise tooling, control of the raw steel microstructure, and carefully calibrated heat treatments to achieve nominal tensile properties up to class 12.9.
As a leading supplier, Handan Yongnian District Dongshuo Fastener Manufacturing Co., Ltd. guarantees that every single batch of DIN 933 bolts conforms fully to global ISO and DIN tolerances, providing long-term reliability for your most critical installations.
Understanding international specification cross-referencing is essential for global sourcing. Our production protocols ensure seamless engineering compliance:
| Parameters | DIN 933 Standard | ISO 4017 (International) | ASME B18.2.1 (US Metric) |
|---|---|---|---|
| Thread Type | Coarse & Fine (Full Thread) | Coarse & Fine (Full Thread) | Unified / Metric Full Thread |
| Dimensional Tolerance | Product Grade A & B (DIN 267) | Product Grade A & B (ISO 4759-1) | Grade A & B Equivalent |
| Steel Grades (Material) | 4.8 / 5.6 / 8.8 / 10.9 / 12.9 | Classes 4.8 to 12.9 | Grades 2 / 5 / 8 / A325 |
| Stainless Materials | A2-70 / A4-80 (SS304 / SS316) | A2-70 / A4-80 / A4-100 | SS304 / SS316 / Premium Alloys |
| Corrosion Options | Electro-Galv, HDG, Dacromet, Black Zinc | HDG, Zn-Ni Alloys, PTFE Coatings | Zinc Yellow, Phosphate, Zinc Flake |
How Handan Yongnian's geographic cluster lowers cost, optimizes processing time, and maximizes throughput for global infrastructure players.
Located directly in Handan City, Hebei Province, our facility sits next to China's leading steel manufacturing mills (like HBIS Group). This proximity reduces inland logistics costs and ensures rapid procurement of high-grade boron and carbon steels.
Equipped with advanced high-speed cold heading machinery, multi-station bolt formers, and automated inline thread rolling lines, we maintain stable quality control while maintaining massive daily production volume targets.
Yongnian's specialized ecological industrial parks provide integrated surface finishing, including electro-plating, hot-dip galvanizing (HDG), black zinc oxide, and Dacromet treatment under strict environmental compliance.
Fully threaded bolts serve critical functions where high clamp load retention and total thread engagement are non-negotiable.
Under heavy cyclical vibrations, DIN 933 bolts maintain uniform tension across joint connections. Grades 10.9 and 12.9 are preferred here to handle extreme thermal expansions and dynamic structural stress cycles.
Salty marine conditions require stainless steel (A4-80 grade) or hot-dip galvanized (HDG) structural bolts. The continuous threads prevent galvanic corrosion traps and ensure secure fastening of structural plates.
High-pressure flanged joints rely on standard metric hex bolts to keep sealing gaskets compressed. Flange assemblies, supported by heavy washers (DIN 125) and locking nuts, guarantee leak-free containment.
A statistical snapshot of our industrial output, engineering capabilities, and global trade presence.
Handan Yongnian District Dongshuo Fastener Manufacturing Co., Ltd. was established in 2015. It is an enterprise specializing in the production and operation of high-performance fasteners. Our company is committed to providing high-quality fastener products and providing customers with comprehensive solutions in various heavy industries, construction sectors, and agricultural engineering fields.
As a reputable fastener manufacturer in China, we have advanced production equipment and a professional technical team to meet our customers' needs for different types of fasteners. Our facilities are designed to implement design, custom engineering, and precise manufacturing processes, guaranteeing that all exports comply with rigorous global quality audits.
We work closely with structural engineers, project procurement directors, and local distributors to ensure that standard parts like the DIN 933 and customized fasteners arrive on time and ready for installation.
Get professional answers regarding specifications, materials testing, order logistics, and customized OEM protocols.
Explore our secondary selection of industrial spring washers, self-drilling screws, heavy-duty nuts, and carriage bolts.
Get in touch with our engineering support and sales division for pricing, custom specifications, or catalog requests.
Headquarters Contact & Logistics Information:
Factory Name: Handan Yongnian District Dongshuo Fastener Manufacturing Co., Ltd.
Industrial Area: Yongnian District Fastener Production Base, Handan City, Hebei Province, China
Email Channel: [email protected] (Response within 12 hours)
Note: If you have technical drawings, please state in your inquiry so our engineers can request them directly via email.
Dongshuo
