Phanuphong Steel and Plates, a top-notch manufacturer and supplier based in Bangkok, Thailand, is all about delivering high-quality Alloy Steel Gr 12.9 Fasteners that provide exceptional strength and reliability for various industrial uses. They’ve built a reputation for precision engineering and sticking to international standards, ensuring that every fastener they produce performs exceptionally well, even in the toughest conditions. Thanks to their cutting-edge manufacturing techniques and strict quality control measures, Phanuphong has become a go-to choice for sectors like construction, automotive, and heavy machinery. With a strong focus on durability, safety, and keeping customers happy, Phanuphong Steel and Plates truly shines as a leading provider of top-grade alloy steel fasteners in the Thai market.
Alloy Steel Gr 12.9 Fasteners are made up of carbon, chromium, and molybdenum, which give them impressive tensile strength and hardness. These fasteners undergo a quenching and tempering process to reach a tensile strength of around 1,200 MPa and a yield strength of 1,080 MPa. Their remarkable wear resistance, toughness, and ability to withstand fatigue make them perfect for high-stress situations. With a hardness range of 38–42 HRC, Gr 12.9 fasteners keep their structural integrity even when faced with extreme pressure and temperature changes, ensuring they deliver reliable performance in demanding industrial settings.
Standard : DIN EN ISO 4014 & 4017 DIN 931 / 933 & IS 1364 / IS 1363
Size : Dia M 20 to 100 mm / Inch 3/4″to 3.1/2″
Finish : Plain / Zinc plated / Hot dip galvanised
Types : 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 | BS 1769 | DIN 7984 | |
UNI 5731 | BS 1083 | ANSI B18.3 | |
UNI 5739 | BS 3692 | ISO 4762 | |
ISO 4014 | ISO 4032 | UNI 5931 | |
ISO 4017 | ISO 4033 | BS 2470 | |
BS 1769 | ANSI B18.2.2 | BS 4168 | |
BS 3692 | |||
ANSI B18.2.1 | |||
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 | |
DIN 553 | BS 2470 | Spring Washers | |
DIN 438 | DIN 127 | ||
BS 4168 | BS 4464 | ||
BS 1802 |
You’ll find Alloy Steel Gr 12.9 Fasteners in a variety of heavy-duty applications that demand top-notch strength and reliability. They play a crucial role in automotive assembly, high-performance machinery, construction projects, and aerospace components, where safety and precision are paramount. Their resistance to wear, fatigue, and corrosion makes them ideal for engines, gearboxes, and structural frameworks. Plus, they’re used in industrial equipment, bridges, and power plants, supporting operations that bear heavy loads. Phanuphong Steel and Plates supplies these fasteners to meet strict engineering standards, guaranteeing optimal performance and durability in both industrial and infrastructure projects throughout Thailand.
Phanuphong 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 Bangkok, Thailand.
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