Description
Six new heavy duty Black-Oxide screws for the YFZ450R/X 2009-2026. These screws hold the starter gear to the back of the flywheel.
Here are the facts about these 6 screws.
With a tensile strength of 170,000 psi, these alloy steel screws are stronger than Grade 8 steel screws.
Screws that meet ASME B18.3, ASME B18.3.1M, ISO 21269, and ISO 4762 (formerly DIN 912) comply with specifications for dimensional standards.
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Fastener Strength Grade/Class |
Class 12.9 |
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Hardness
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Rockwell C41
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Class 12.9 refers to the highest strength metric fastener classification, indicating it is made from a hardened alloy steel and possesses a minimum tensile strength of 1,220 MPa and a minimum yield strength of 1,100 MPa. These ultra-high-strength bolts are used in extreme-stress, critical applications like heavy-duty machinery, automotive components, and construction where maximum durability and reliability are essential.
- Suitable for high-demand, high-stress environments where failure is not an option.
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Used in engine and chassis assemblies where high loads and vibrations are expected.
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