Very similar to the previous class 8.8 in refined condition. Suitable for joints subjected to high loads, recommended for friction joints with controlled tightening. It achieves a higher tensile strength (over 1000MPa), which may have certain limitations in connection with the risk of hydrogen embrittlement. This strength class has limited options for galvanic galvanizing, there is a need to take measures in the form of dewatering of the components (a more complex process that entails a higher price). A special application (GEOMET®, DACROMET®, etc.) is often recommended for surface treatment, where length restrictions apply for custom production (usually up to 800mm). Guarantee of notch toughness min. 27J at -20°C. Made of carbon or alloy steel, hardened and tempered.
Product documents:
Choose the appropriate version of the bar according to the strength class and surface finish that ensures its protection.
VIEW PDF WITH DESCRIPTION OF THE DIVISIONFor easy differentiation of strength classes (according to EN ISO 898-1), select threaded rods and bolts according to the approved colour marking.
SHOW PDF WITH COLOUR CODINGWe check our products in detail both in terms of quality and material composition and thread quality. We will advise you on how to check the processing.
We are Europe's leading manufacturer of customised fasteners. Choose the materials and their quality according to your needs. Send a drawing or ask for partial production.
MORE ABOUT CUSTOM PRODUCTION