High Tensile Bolts Socket Screws Rod Washers Nuts Etc Metric Unc-unf 8.8-10.9 12.9 Structural And More

Welcome to Bolts Nuts Screws Online's High Tensile Category

Your go-to Australian destination for top-quality high-tensile fasteners in Australia. Whether you're working on construction projects, heavy machinery, or any application that demands robust fastening solutions, we have you covered with our extensive range of Metric and Imperial high-tensile bolts, nuts, and screws.

This comprehensive range offers various options to suit your specific requirements. Choose from high tensile hex head bolts and set screws, available in grades 8, class, 8.8, and 10.9, with options for UNC, UNF, Metric, and Metric Fine threads. Additionally, we pride ourselves on offering one of Australia's most extensive selections of Socket Head Cap Screws, including 12.9 grade, Flat Head, Countersunk, Button Head, and grub screws (socket set screws), all featuring internal hex drives for ease of use with an Allen Key. Structural assemblies, threaded rod options, and associated nuts and washers ensure a complete fastening solution.

At Bolts Nuts Screws, quality and customer satisfaction are paramount. That's why we offer material certificates upon request, giving you added peace of mind and ensuring compliance with stringent quality standards. Our knowledgeable team is dedicated to providing exceptional service, and we're always available to assist you with any inquiries or further assistance you may require. Whether you prefer to reach out via phone or email, we're here to help. And if, for any reason, we're unable to address your needs directly, we'll gladly guide you in the right direction to find the solutions you're looking for.

In Australia, high-tensile bolts and fasteners have specific head markings that indicate their grade and strength. These markings are standardized to ensure consistency and reliability in identifying the mechanical properties of the fasteners. Here is a detailed description of common high tensile head markings found in Australia:

Head Markings for High Tensile Bolts:

1. Property Class 8.8:

   • Marking: Typically marked with "8.8".
   • Meaning: This indicates a bolt with a minimum tensile strength of 800 MPa and a yield strength of 640 MPa.

2. Property Class 10.9:

   • Marking: Marked with "10.9".
   • Meaning: This signifies a bolt with a minimum tensile strength of 1000 MPa and a yield strength of 900 MPa.

3. Property Class 12.9:

   • Marking: Marked with "12.9".
   • Meaning: Indicates a bolt with a minimum tensile strength of 1200 MPa and a yield strength of 1080 MPa.

Additional Markings and Indicators:

• Manufacturer's Identification: Often, bolts will have the manufacturer's mark to indicate the source.
• Grade and Strength Symbol: In addition to numeric class markings, some bolts might have symbols or additional letters indicating specific standards or additional properties.
• Arrow or Dot Symbols: Some high tensile bolts may include an arrow or dots, which can indicate the specific manufacturing batch or process used.

Visual Identification:

• Surface Finish: These bolts often have a specific finish, such as black oxide, zinc plating, or galvanizing, which can also indicate their intended application and environmental resistance.

Standards:

In Australia, high tensile head markings conform to standards such as ISO 898-1, which specifies the mechanical properties of fasteners made of carbon steel and alloy steel.

Understanding these markings is crucial for selecting the right fastener for engineering and construction applications, ensuring safety, reliability, and compliance with Australian standards.

Experience the unparalleled quality and reliability of Bolts Nuts Screws today. Discover why we're the preferred choice for fasteners across Australia and confidently elevate your projects.

Spanner Size Guide

Metric High Tensile Bolts

UNC (Unified National Coarse) High Tensile Bolts

UNF (Unified National Fine) High Tensile Bolts

This guide provides the typical spanner sizes used for different bolt diameters in metric, UNC, and UNF high tensile bolts. It's essential to use the correct spanner size to ensure proper torque application and avoid damage to the fasteners.