Yazan Steel, based in the heart of Amman, Jordan, stands as a reliable partner for industries requiring unwavering strength. We specialize in supplying high-performance Alloy Steel Grade 12.9 fasteners, engineered for the most demanding applications. Our commitment is to provide solutions that go beyond simple components, offering a foundation of security and durability. When you source from us, you’re not just getting a fastener; you’re accessing local expertise and a dedication to quality that ensures your projects are built on a foundation of absolute reliability and trust.
Alloy Steel Grade 12.9 fasteners are defined by their exceptional chemical composition and mechanical integrity. They are meticulously crafted from a precise alloy blend, typically including elements like chromium and molybdenum, which contribute to their superior strength. This specific formulation allows them to achieve a minimum tensile strength of 1,220 MPa, making them one of the strongest commercially available fastener grades. This combination of material science and engineering results in a product capable of withstanding extreme stresses, offering unparalleled resistance to stretching and breaking under heavy loads.
Standard :Â DIN EN ISO 4014 & 4017 DIN 931 / 933 & IS 1364 / IS 1363
Size :Â Dia M 20 to 100 mm / Inch 3/4″to 3.1/2″
Finish :Â Plain / Zinc plated / Hot dip galvanised
Types :Â Nuts, Bolts, Screws, Sockets, Studs, Screw, Hex Set Screw, Socket Screw, Cap Screw, Pan Head Screw, Socket Head Cap Screw, Washers, Spring Washers, Studs, Anchors
| Grades | Size Range | PS [MPa] | YS (min) [MPa] | TS (min) [MPa] | Hardness [Rockwell] |
| Class 12.9 | Under M16 | 580 | 640 | 800 | |
| 17-72 | 600 | 660 | 830 | C23–34 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Hexagon Bolts / Set Screws | Stud Bolts | Hexagon Nuts | Socket Capscrews |
|---|---|---|---|
DIN 931 | BS4882 | DIN 934 | DIN 912 |
DIN 933 | DIN 976 | BS 1768 | DIN 6912 |
BS 1768 | Â | BS 1769 | DIN 7984 |
UNI 5731 | Â | BS 1083 | ANSI B18.3 |
UNI 5739 | Â | BS 3692 | ISO 4762 |
ISO 4014 | Â | ISO 4032 | UNI 5931 |
ISO 4017 | Â | ISO 4033 | BS 2470 |
BS 1769 | Â | ANSI B18.2.2 | BS 4168 |
BS 3692 | Â | Â | Â |
ANSI B18.2.1 | Â | Â | Â |
Socket & Slotted Set Screws | Socket & Slotted Countersunk Screws | Studs | Washers |
DIN 913 | DIN 963 | DIN 938 | DIN 125 |
DIN 914 | DIN 7991 | DIN 939 | DIN 9021 |
DIN 915 | BS 4168 | DIN 2510 | BS 4320 |
DIN 916 | BS 1981 | BS 4439 | BS 3410 |
DIN 551 | BS 483 | BS 2693 | Â |
DIN 553 | BS 2470 | Â | Spring Washers |
DIN 438 | Â | Â | DIN 127 |
BS 4168 | Â | Â | BS 4464 |
 |  |  | BS 1802 |
The exceptional strength of Grade 12.9 fasteners makes them indispensable in high-stakes environments. You will commonly find them securing critical components in heavy machinery, robust automotive assemblies like engine and transmission systems, and large-scale construction projects. They are the fastener of choice for demanding applications in mining equipment, aerospace tooling, and anywhere structural integrity is non-negotiable. Essentially, when failure is not an option and the highest level of clamp force is required, these fasteners provide the security needed to ensure safety and long-term performance.
Yazan Steel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Amman, Jordan.
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