Stainless steel standard parts of the use of the rules

Standard stainless steel parts are usually used to fasten on expensive mechanical parts because of their beautiful appearance, durability and corrosion resistance. Of course, for stainless steel standard parts, there are different confirmation principles, mainly confirmed categories, standard types and mechanical properties, as well as threads and standards.

1, confirm the category: professional stainless steel standard parts are divided into bolts, nuts, screws, studs, washers, tapping screws, rivets, pins, retaining rings, wood screws and other categories. Selection should be based on the use of stainless steel standard parts and functions to confirm. 2, confirm the standard and type: stainless steel standard parts selection principle: (1) taking into account the efficiency of processing and assembly, the same machinery or engineering stainless steel standard parts should be as little as possible. (2) Considering economy, commercial stainless steel standard parts are preferred. (3) According to the expected use of stainless steel standard parts, according to the type, mechanical function, precision and thread selection. 3, confirm the mechanical function level of stainless steel standard parts: (1) understand the function level of bolts, screws, studs and nuts; (2) Confirm the functional grade of the setting screw; (3) Tapping screws and tapping locking screws. Select appropriate standards to meet its general application requirements. Its mechanical function is divided into two grades: A and B, with grade A being the high strength grade. b is a low intensity rating. 4, correct selection of stainless steel standard parts thread and standard in order to correctly select the thread, coarse thread has good versatility and economy, suitable for fast fastening operation and repeated loading and unloading. Fine teeth of good locking, fastening force and strength, and then confirm its standard. Generally speaking, the diameter standard as far as possible to choose, length standards generally do not use product standards outside the standard, and the diameter and length of the standard to match the standard preferential selection of stainless steel standard parts within the standard range.