Do you know the commonly used bolt specifications?

2023/07/29

What are the commonly used bolt specifications? This is something that many friends are more concerned about, so next, the editor will introduce it to you. Lag bolts: C-level lag bolts refer to the standard parts connected by the head and the screw of the extruder. They need to be used in conjunction with the bolts. The grade of the lag bolts is C-grade. Square head bolts are divided into 4.8-grade bolts, 8.8-grade bolts, 10.9-grade bolts, and 12.9-grade bolts according to their high-strength grades. According to the screw and cable material, there are iron bolts and stainless steel plate bolts. The stainless steel plate bolts include stainless steel SUS304 bolts, stainless steel SUS201 bolts, and stainless steel SUS316 bolts. It is widely used in the fields of electrical and electronic, water conservancy and hydropower engineering, electrical products, industrial equipment, chemical machinery and equipment, ships, vehicles, bridges, steel frame structures and so on. Square neck bolt with semicircular head: The shape is exactly what it is called. Put the square neck on the top of the head into the groove of the connected piece, reduce the relative height of the protruding surface, and tighten the screw from the back. It is often used in areas with less bearing capacity, so the material is softer. Cross-recessed pan head screw: a cross-recessed machine screw, represented by the English letter PM. The country stipulates that the thread specification is M1.6-M10, the characteristic level is 1.8.A-50.A2-70.CU2.CU3 and AL4.H type and Z type cross recessed, and the commodity level is A grade cross recessed pan head screw . Hexagon socket countersunk head screws: Hexagon socket countersunk head screws are commonly used in instruments and meters, which can not only ensure the assembly precision, but also ensure the structural compressive strength. Slotted cylinder head screw: Slotted cylinder head screw specifications and models 3*8, 3*10, 3*12, 3*16, 3*20, 3*25, 3*30, 3*45, 4*8 , 4*10 of these. According to the material, there are stainless steel plate and iron. Basic Spring Washer: Basic Spring Washer The spring washer is installed under the nut to prevent the screw from loosening. Hexagonal bolts: Hexagonal bolts are divided into two types: outer hexagonal bolts and inner hexagonal screws, which are generally used for tightening industrial equipment.

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