Chipboard screws
Tapping screws
Machine screws
Hex flange screws
Hex socket screws
Nonstandard screw
 
1、Screw Head styles
Date Published：2007-10-20 
2、screw slot form
Date Published：2007-10-25 
3、Screws point shape
Date Published：2007-10-25 
4、General screw name English and Chinese contrasts
Date Published：2007-10-31 

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