Alloy Steel Gr 8.8 Fasteners are crafted from medium carbon steel, blended with elements like carbon (0.25–0.55%), manganese (0.6–1.7%), and just a hint of phosphorus and sulfur. These fasteners go through a process of quenching and tempering to boost their mechanical properties. Typically, they boast a tensile strength of about 800 MPa and a yield strength of roughly 640 MPa. Their impressive hardness, wear resistance, and fatigue strength make them perfect for tough industrial settings where strength and reliability are crucial.
You’ll find Alloy Steel Gr 8.8 Fasteners commonly used in construction, automotive, machinery, and heavy engineering fields, thanks to their high mechanical strength and durability. They’re particularly well-suited for structural steel connections in bridges, buildings, and pipelines. In the automotive world, you’ll often see them in suspension systems, engine components, and chassis assemblies. These fasteners create secure, vibration-resistant joints even under heavy loads. Their strong performance also makes them a go-to choice in the energy, mining, and oil & gas industries for critical bolting tasks that demand both strength and reliability under dynamic stress.
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
| Alloy Steel 8.8 | C | Mn | P | S | Si | Ni | Cr |
| 0.15 max | 1.00 max | 0.040 | 0.030 | 1.00 max | – | 11.50-13.50 |
| Grades | Size Range | PS [MPa] | YS (min) [MPa] | TS (min) [MPa] | Hardness [Rockwell] |
| Class 8.8 | 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 |
Luke Steel is a reputable manufacturer and supplier of Alloy Steel Gr 8.8 Fasteners located in Houston, Houstan, recognized for providing top-notch fastening solutions. With a dedication to excellence and precision engineering, Luke Steel delivers fasteners that meet global standards for strength, durability, and performance. The company offers a diverse range of Grade 8.8 fasteners designed to meet various industrial needs, including those in the automotive, construction, and energy sectors. By combining advanced manufacturing techniques with strict quality control, Luke Steel guarantees reliability in every product. Their customer-centric approach and prompt delivery have helped them build a solid reputation both domestically and internationally.
Luke 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 Houstan, USA.
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