High Tensile Steel Bolts, Screws, Fasteners and Fixings

Typically Grade 8.8 to Grade 12.9 Steel

For fasteners and fixings, high tensile steel is some of the best material on offer.  They are widely used in construction, automotive, and engineering applications due to their superior strength and durability. Screws and bolts made from high tensile steel can withstand high levels of strain without losing their strength or structure. These components are typically manufactured from alloy steels and heat-treated to achieve specific mechanical properties.

Take a look at some of our fixings available in High Tensile Steel:

• Threaded rod (Available in Grade 4.8 to 12.9)
• High tensile bolts (Available in Grade 5.5 to 12.9) See Steel Bolts
• Hexagon Set Screws 

High tensile steel bolts and fixings are typically available in grades 8.8 to 12.9.

High tensile steel bolts

Grade 8.8 high tensile steel is often referred to as the structural grade for bolts. It is the most common form of high tensile material and is usually stocked in plain finish or zinc. It can be plated in many other coatings. For high tensile steel grade 8.8, a torque wrench will be required for the tightening of said product. These products are built to last and work optimally under harsh usage and should be easily identifiable via a permanent marking on the head to allow the customer to differentiate them. Medium carbon steel, often quenched and tempered. Tensile Strength: Minimum 800 MPa / Yield Strength: Minimum 640 MPa. 

Grade 10.9 bolts are typically used in automotive applications and for bolting large, forged parts and are often made using carbon steel and boron steel. Socket and Countersunk buttons are commonly manufactured in this grade. High-grade alloy steel, quenched and tempered. Tensile Strength: Minimum 1000 MPa / Yield Strength: Minimum 900 MPa.

Grade 12.9 bolts, fasteners and fixings are for some of the heaviest jobs, such as securing engines and ensuring that drives are tamper proof. Ultra-high strength alloy steel, quenched and tempered. Tensile Strength: Minimum 1200 MPa / Yield Strength: Minimum 1080 MPa. 

The grade of the fastener doesn’t just determine how much stress that they can withstand, but also the kind of tool needed to be able to tighten them.

Properties

• Strength: These grades offer exceptional resistance to mechanical stresses, making them suitable for high-load and high-vibration environments.
• Durability: Enhanced corrosion and wear resistance when coated (e.g., zinc plating or galvanisation).
• Hardness: Achieved through quenching and tempering, enabling resistance to deformation.

We supply a wide range of products available from stock in high tensile steel.

If you require more information or would like to order in high tensile steel, please contact us.

Make an enquiry about high tensile steel bolts and fixings