Stainless steel grade 12.9 screws belong to the top varieties of screws. Stainless steel bolts with a strength of 12.9 grade are among the top varieties of screws. 12.9 grade screws refer to hexagonal bolts made of SCM435 alloy steel material, with a tensile strength of up to 1220Mpa and a hardness of 39-44HRC, which are ultra high strength screws commonly used in industries such as textiles, hydraulics, injection molding, and machinery. 12.9 grade belongs to the top variety of screws, with good hardness and tensile strength. Its HRC value can reach between 39-44, and the tensile strength can reach 1220N/mm2.
Strictly speaking, stainless steel does not have grade 12.9 screws because grade 12.9 is the name for carbon steel alloy steel screws, while stainless steel screws do not have this name; The stainless steel 8.8 grade screws, stainless steel 10.9 grade screws, stainless steel 12.9 grade screws, and stainless steel 14.9 grade screws that we often talk about are all screws made of stainless steel materials equivalent to this strength, and the specific parameters of stainless steel are different; The products commonly produced by Shanghai Ya Screw are stainless steel grade 8.8 screws, stainless steel grade 10.9 screws, stainless steel grade 12.9 screws, and stainless steel grade 14.9 screws; Relatively speaking, the difficulty of producing high-strength stainless steel screws is much greater than that of high-strength carbon steel alloy steel. Stainless steel generally has a lower carbon content, making it more difficult to achieve high strength than carbon steel. The heat treatment methods are also different, and the overall requirements vary greatly; Shanghai Ya Screw Tightening Technology is currently in production, and specific requirements and parameters need to be confirmed through communication.
Shanghai Yaluo Fasteners custom produces 12.9 grade stainless steel screws with high strength and hardness. Applied to engineering projects such as bridges and tunnels, building steel structures, road transportation, aerospace and military industries.
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