Filiz Steel, based in Istanbul, Turkey, has made a name for itself as a leading manufacturer and supplier of high-performance Alloy Steel Gr 12.9 Fasteners. With a reputation for precision engineering and a commitment to global standards, Filiz Steel provides fastening solutions that guarantee exceptional strength, reliability, and durability, even in the toughest conditions. Their Alloy Steel Gr 12.9 Fasteners are crafted from top-quality raw materials and go through advanced heat treatment processes to achieve outstanding mechanical properties. With a strong emphasis on quality, performance, and customer satisfaction, Filiz Steel is a trusted supplier in sectors like construction, automotive, heavy machinery, and engineering, making them a dependable global partner for critical projects.
Alloy Steel Gr 12.9 Fasteners are made up of carbon, manganese, chromium, and other alloying elements that boost hardness, tensile strength, and toughness. These fasteners showcase incredibly high tensile and yield strength, excellent fatigue resistance, and superior wear characteristics. Heat treatment methods like quenching and tempering further enhance their durability and reliability under heavy loads. Thanks to their refined microstructure and well-balanced chemical composition, Alloy Steel Gr 12.9 Fasteners maintain their structural integrity in high-stress situations, making them perfect for demanding industrial and mechanical applications where secure and long-lasting connections are a must.
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 |
Alloy Steel Gr 12.9 Fasteners find extensive use in industries that demand maximum strength and reliability, including automotive, aerospace, construction, heavy machinery, and industrial engineering. They are particularly suited for securing structural assemblies, machinery components, and high-load applications where safety and performance are paramount. Their ability to endure extreme pressure, wear, and fatigue ensures dependable performance in both static and dynamic environments. Filiz Steel’s Alloy Steel Gr 12.9 Fasteners deliver robust fastening solutions that support safe and efficient operations.
Filiz 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 Istanbul, Turkey.
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