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How to inspect non-standard screws before shipment

With the continuous development of the fastener industry, non-standard screws will be used in many industries. Product shipments are not as simple as imagined, each screw has to be selected through layers.

1. Generally, our non-standard screw manufacturers will check whether the screws have surface defects, mainly to check for headshots, scratches, and whether the threads are well rubbed and rubbed completely. In this step of inspection, we can refer to the corresponding national standard screw surface defect standards. If there is electroplating, check the durability and integrity of the electroplated layer.

2. Then use measuring tools such as calipers to test the shape, size and other details of the non-standard screws according to the requirements of the design drawings, and ensure that each size is within the tolerance range.

3. The following is the non-destructive inspection and destructive inspection of non-standard screws. As the name implies, non-destructive inspection is an inspection item that does not damage the screw. For example, check the screws for quenching cracks, wrinkles and coatings on the supporting surface and below. And destructive inspection, such as non-standard screw hardness, etc. and do the corresponding hardness impact test, mechanical performance, torque test, etc. This will damage the non-standard screws, which may sound a bit wasteful, but as a non-standard screw manufacturer on the special page, we will try our best to do every process and provide customers with good service and suitable fastener solutions.

People usually hear the cross recess, Phillips screw, and Y-shaped screws. It is one of the non-standard screws. It is commonly used in some small electronic products and requires a screwdriver on a special page to remove it. So how do you remove the Y-shaped non-standard screws?

Someone may ask, if there is no special-page screwdriver, what should I do if I temporarily disassemble it? In fact, you can use a flat-blade screwdriver one size smaller than the screw, but you need to make sure that the blade of the screwdriver can be stuck in the gap of the triangle, and then gently rotate it. Unscrew the screw. During the screwing process, the screwdriver can be switched back and forth among the three gaps to avoid damage to the screw slot by applying force to one place. But this is not a long-term solution after all. It is not only easy to damage the screws with inappropriate tools, but also easy to accidentally hurt yourself. It is recommended to buy a matching screwdriver.

Y-shaped screws are not available in the market, and you have to reopen the mold. After all, screws of this type are not very common, and they are usually customized by suitable non-standard screw manufacturers. As a screw manufacturer with 20 years of experience, we still have an advantage in this kind of screw customization, and we can process it according to customer needs. If there is no picture template, design drawings can be developed according to customer needs and provide a satisfactory fastener solution.

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