What is the tolerance range of precision screws?
What is the tolerance range of precision screws?
Half round head rivets are mainly used for riveting occasions with large lateral loads, and are the most widely used. Flat cone head rivets are often used in riveting occasions with strong corrosion such as ship hulls, boiler water tanks, etc. Countersunk head and 1200 countersunk head rivets are mainly used for riveting occasions where the surface must be smooth and the load is not large. Half countersunk head and 1200 half countersunk head rivets are mainly used for riveting occasions where the surface must be smooth and the load is not large. Flat head rivets are used for riveting occasions with general load. Flat head and flat head rivets are mainly used for riveting of metal sheets or non-metallic materials such as leather, canvas and wood. Large flat head rivets are mainly used for riveting of non-metallic materials. Semi-hollow rivets are mainly used for riveting occasions with small loads. Headless rivets are mainly used for riveting of non-metallic materials. Hollow rivets are light in weight and weak in head, and are used for riveting of non-metallic materials with small loads. Tubular rivets are used for riveting of non-metallic materials without load. Nameplate rivets are mainly used for riveting nameplates on machines and equipment.
With the development of science and technology, the advancement of technology, the rapid change of automotive products, also put forward higher requirements for fastener products, and automotive fastener-related products, especially in the process of assembling auto parts, in order to effectively improve the bolts The fastening strength is mostly made of combined gaskets (flat gaskets, cone gaskets) and riveted nuts to meet the assembly requirements.
Sprinkle the excess flat washer 6 on the positioning plate II3-1 on the flat washer positioning plate 3, and shake the flat washer positioning plate 3 by hand. After a short time, the flat washer 6 will be positioned and arranged on the upper positioning plate II3-1. In the flat washer hole 3-7, since the width of the opening groove 113-32 of the baffle plate II3-3 is smaller than the diameter of the flat washer hole 3-7, and the thickness of the upper positioning plate II3-1 is designed according to the thickness of the flat washer 6, each Only one flat washer 6 can be accommodated in the flat washer holes 3-7 of each upper positioning plate II3-1, and then use a brush to remove the excess flat washer
The embedded nut proposed by Guangdong Yueluo Hardware Industry Co., Ltd. is used to be embedded in an injection molded part. The embedded nut is arranged in a column shape and has a screw hole inside. The embedded nut includes an outer peripheral surface and is formed in the inner nut. The upper end surface and the lower end surface of the two ends of the embedded nut are provided with knurling on the outer peripheral surface, and a guide surface is formed at the connection between the outer peripheral surface and the lower end surface.
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