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ONA
847490
ONA can provide bolts and nuts of various specifications and models, and can also be customized according to your needs.
Eg. C100 Cheek plate hammer screw
Bolt performance grade fastener products, according to GB/T3098.1 and GB/T3098.6 standards, require bolts, screws, nuts, studs, etc. with a thread diameter ≥5mm, and stainless steel studs with a thread diameter ≥6mm to be marked on the head or rod. The product mark should include: 1. The manufacturer's identification mark; 2. The performance grade mark.
Commonly used bolt performance grades are divided into more than 10 grades such as 3.6, 4.6, 4.8, 5.6, 5.8, 6.8, 8.8, 9.8, 10.9, and 12.9 (the new national standard has cancelled grade 3.6). Among them, bolts of grade 8.8 and above are made of low-carbon alloy steel or medium-carbon steel and are heat-treated (quenched and tempered). They are generally called high-strength bolts, and the rest are generally called ordinary bolts.
The bolt performance grade number consists of two parts, which represent the nominal tensile strength value and yield strength ratio of the bolt material.
The meaning of bolt performance grade is an internationally accepted standard. Bolts of the same performance grade have the same performance regardless of their materials and origins. Only the performance grade can be selected in the design.
The so-called strength grade 8.8 and 10.9 refer to the shear stress grade of the bolts as 8.8GPa and 10.9GPa.
ONA can provide bolts and nuts of various specifications and models, and can also be customized according to your needs.
Eg. C100 Cheek plate hammer screw
Bolt performance grade fastener products, according to GB/T3098.1 and GB/T3098.6 standards, require bolts, screws, nuts, studs, etc. with a thread diameter ≥5mm, and stainless steel studs with a thread diameter ≥6mm to be marked on the head or rod. The product mark should include: 1. The manufacturer's identification mark; 2. The performance grade mark.
Commonly used bolt performance grades are divided into more than 10 grades such as 3.6, 4.6, 4.8, 5.6, 5.8, 6.8, 8.8, 9.8, 10.9, and 12.9 (the new national standard has cancelled grade 3.6). Among them, bolts of grade 8.8 and above are made of low-carbon alloy steel or medium-carbon steel and are heat-treated (quenched and tempered). They are generally called high-strength bolts, and the rest are generally called ordinary bolts.
The bolt performance grade number consists of two parts, which represent the nominal tensile strength value and yield strength ratio of the bolt material.
The meaning of bolt performance grade is an internationally accepted standard. Bolts of the same performance grade have the same performance regardless of their materials and origins. Only the performance grade can be selected in the design.
The so-called strength grade 8.8 and 10.9 refer to the shear stress grade of the bolts as 8.8GPa and 10.9GPa.
