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YAMAHA YFZ450R, YFZ450X FLYWHEEL TO STARTER GEAR UPGRADED HEAVY DUTY BOLTS X6

Original price was: $14.99.Current price is: $11.49.

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 f…

28 in stock

SKU: 91290A320, X6 MCMASTER CARR DIRECT Category:

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.

Fastener Strength Grade/Class

Class 12.9

Hardness

Rockwell C41

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. 
  •  
    Used in engine and chassis assemblies where high loads and vibrations are expected. 

Additional information

Weight 0.125 lbs
Dimensions 4 × 4 × 1 in

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