As we all know, high precision micro screws are used widely in smaller electronic products, and the quality of precision screws is closely related to the service life of electronic products.  So how to test the quality of precision micro screws?  Follow the small screw manufacturers to take a look:  
1. We should look from the screw wire(Raw material), the precision micro screws’ quality is directly related with the wire which will be used to product.  Like the screw head burst, bad thread, there are all caused by the wire. 

2 Checking the screw cold heading process, in the screw forming process, need to check the mold of the screw production firstly, has a better forming ability, can produce the better quality screws.  In the production of the screw machine inspection, which is conducive to smooth production.  The appearance of the molded screw should be checked, whether there is a burr, and the size of the screw should be checked to see if these sizes meet the standard or the specific requirements of the customer.  

3. Conducted color test and salt spray test for electroplating screws.  Check the color of the electroplating screw, the smoothness of the surface of the screw, salt spray test to check the rust time of the screw or how many hours the salt spray screw will rust, and then we will check the delivery of the screw.  
To sum up, the above steps of precision micro screw quality inspection are to provide customers with the best quality screws, so that customers are satisfied and assured.  Suzhou Anzhikou Hardware Technology Co., Ltd. is a manufacturer with 20 years experience in micro screws, we can provide more professional serve and the high precision screws in competitive price, if you are interested in small screws, you are welcome to inquire!  

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