Service HotlineIn the current plastic matrix, it is common to use self-tapping screws or add copper inserts during injection molding. The former has poor strength, and the threaded hole is easy to crack; the processing cost is high, the injection molding efficiency is low, the labor cost and manufacturing cost are increased, and the insert is easy to slip and crack on the plastic, and the thread strength of the copper insert is not as high as that of the iron nut.
Classification broadcast product series Product detailed classification Hexagon bolts (1) Hexagon bolts (1) Hexagon full teeth: GB5783/DIN933 (2) Hexagon half teeth; GB5782/DIN931 (3) Class B flange hexagon bolts: GB5787 (4) GalwayJoint bolts: GB798/DIN444 (5) Welding bolts for manual welding: GB902 square neck bolts (1) GalwayHalf round head square neck bolts: GB14/DIN603 (2) Small half round head square neck bolts: GB12 (3) Half round head low square neck bolts: GB801 Remarks: GalwaySquare neck bolts and Galwaycarriage bolts GalwayGalwayHexagon socket head Galwaycap screws (1) GalwayGalwayHexagon socket head Galwaycap screws: GB70/GalwayDIN912 (2) Hexagon socket flat Galwayend GalwayGalwayGalwayGalwayset screws: BG70/GalwayDIN913 (3) Hexagon socket head GalwayGalwayGalwayGalwayset screws: GalwayGB78/GalwayDIN914 ( 4) Countersunk head socket head socket head GalwayGalwayGalwayGalwayset screw: GB79/GalwayDIN915 (5) Hexagon socket socket head GalwayGalwayGalwayGalwayset screw: GB80/GalwayDIN916 (6) Hexagon socket head countersunk head screw: GalwayGalwayDIN7991 (7) Hexagon socket head thin head screw: DIN7984 ( 8) Plug screw: ISO7379 Galwaymachine screw (1) Slotted cylinder head screw: GB65/DIN84 (2) Slotted pan head screw: GB67/DIN85 (3) Slotted countersunk head screw: GB68/DIN963 (4) Slotted GalwayGalwayGalwayGalwayLarge Galwayflat head screw (5) Cross recessed small pan head screw: GB823 (6) Cross recessed large Galwayflat head screw (7) GalwayCross recessed pan head screw: GalwayGB818/DIN7985 (8) Cross recessed countersunk head screw: GalwayGB819/DIN965 (9 ) Cross recessed countersunk head screw: GalwayGB820/DIN966 thread and stud (2) GalwayStud bolt-bm=1d: GB897/DIN938 (3) GalwayStud bolt-bm=1.25d: GB898/DIN939 (4) GalwayStud head Bolt-bm=1.5d: GB899 (5) GalwayStud bolt-bm=2d: GB900 (1) Tooth bar: GB15389/DIN976 (6) Equal length stud: GB901/DIN976
screw is a tool that uses the physical and mathematical principles of the circular rotation and friction of an object to fasten the mechanism of the object step by step. A screw is a common term for fasteners, an everyday colloquial language. Screws are indispensable industrial necessities in daily life: tiny screws used in cameras, glasses, clocks, electronics, etc.; general screws in televisions, electrical products, musical instruments, furniture, etc.; as for engineering, construction, and bridges, large screws are used. Screws and nuts; transportation equipment, airplanes, trams, automobiles, etc. are used together with large and small screws. Screws have important tasks in industry. As long as there is industry on earth, the function of screws will always be important. The screw is a common invention in people's production and life for thousands of years. According to the application field, it is the first invention of mankind.
The retaining ring is divided into two types: shaft use and hole use. Its structural characteristics: The Galwayshaft retaining ring is a kind of retaining ring installed on the shaft groove, which is used for positioning and fixing of shaft end parts, and can withstand severe vibration and shock loads, but It is necessary to take anti-loosening measures and installation positioning; the hole is installed in the circular hole with an elastic retaining ring, which is used for the axial movement of the fixed parts. The outer diameter of this retaining ring is slightly larger than the diameter of the assembly circular hole.
During assembly, the washer and the screw are two separate parts, and the washer needs to be put on the connection part of the screw, which increases the workload of people during assembly, and the washer is easy to slip off; and some screws are fixed with Although the washer can reduce the workload of people during assembly, the washer is fixed on the screw, and the original function of the washer is limited.
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