Countersunk head tapping screws
Countersunk head tapping screws Countersunk head tapping screws and flat-tail nails are often used in the installation of electronic and electrical products.
Screws
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hexagon socket head half-thread screws
Finexpress stainless steel blue-resistant 304 hexagon socket head half-thread screws GB/T 70-1985 The outer side of the screw head is a hexagonal shape with a round recess. This type of screw is called a hexagonal screw. A special wrench is needed to fix and remove this type of screw. Generally, special hexagonal wrenches are sold in hardware stores. The biggest function of a screw is to fix it, and the hexagonal screw is mainly used for mechanical fixation. The advantage of this is that it is easier to fix without the consequence of thread stripping. It is also easy to remove, which works with the hexagonal wrench.
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Hexagon socket head screw
12.9 Hexagon socket head screw Hexagon socket screws, also called hexagon socket bolts, cup head screws, hexagon socket screws, are called differently, but they mean the same thing. Commonly used hexagon socket head screws are also 4.8, 8.8, 10.9, and 12.9. They are also called hexagon socket screws and hexagon socket bolts. They have a hexagon socket head and a cylindrical head.
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Hexagon socket head semi-thread screws
Hexagon socket head semi-thread screws Hexagon socket bolts are divided into ordinary and high-strength according to the grade strength. Ordinary hexagon socket bolts refer to those of grade 4.8, and high-strength hexagon socket bolts refer to those of grade 8.8 or above, including grade 10.9 and grade 12.9. Grade 12.9 hexagon socket bolts generally refer to black hexagon socket head screws with knurling, natural color and oil. Hexagon socket cylindrical head screws are also referred to as hexagon socket bolts. Similar to countersunk screws, the nail head is embedded in the machine parts, and the connection strength is relatively large, but the corresponding specifications of hexagon socket wrenches must be used to install and remove the screws. Generally used on various machine tools and their accessories.