12x40 mm screw hex head partial thread class 8.8 (per unit)

12x40 mm screws

Ø12x40 mm screw with hexagonal head partial thread new adaptable for motorcycle, scooter, moped, quad 50cc, 125cc and other displacements.
Class 8.8 means that the screw is made of low carbon steel, which is considered the most common form of high tensile materials.
In general, class (or grade) 8.8 screws are treated with zinc and allow controlled tightening using a torque wrench. These screws have a breaking strength of approximately 800N/mm² and a yield strength of 640N/mm².

Technical characteristics and dimensions

• Brand: generic
• Material: steel
• Colour: grey
• Thread diameter: 12 mm
• No threading: 1.75
• Overall length: 47.5 mm
• Length under head: 40 mm
• Thread length: 31 mm
• Outer width of the head: 17.8 mm
• Sold individually
• Screws with an 18 key
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