Why Use A Washer?
1. Characteristics and application of high-strength fasteners
1) High-strength fasteners refer to fasteners with higher performance levels, including high-strength bolts, high-strength nuts, high-strength washers, high-strength screws, and high-strength studs.
High-strength bolts generally refer to GB / T 3098.1-2010 “Fastener Mechanical Performance Bolts, Screws and Studs” performance level marking system and mechanical performance grade> = 8.8 bolts; high-strength nuts usually refer to GB / T 3098.2-2015 “fastener mechanical properties” Nuts “performance level marking system and nuts with mechanical performance level> = 8.
High-strength washers usually refer to high-strength washers for steel structures (GB / T 1230-2006″ High-strength washers for steel structures “) and high-strength bolts Washer (Heavy Machinery Standard JB / ZQ 4080-2006 “High StrengthBolt special washer》), the former has a hardness of 35HRC -45HRC, and the latter has a tensile strength of 900MPa ( = M100).
The performance level of high-strength fasteners reflects the strength of its material. The higher the performance level, the higher the strength of the material, the greater the clamping force that can be generated. The high-strength screws, high-strength studs, and high-strength bolts implement standards. The same, the characteristics are basically the same, the use is basically the same. For the convenience of description, this article only refers to high-strength bolts, high-strength screws, and studs.
2) High-strength fasteners have high mechanical strength. Compared with ordinary fasteners (mainly referring to the mechanical performance level of bolts
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