Material: Common titanium screw materials include TA1 TA2、TC4、TA9、GR1、GR2、GR5 ，GR7， Among them, TA1 and TA2 are made of pure titanium material, which has good corrosion resistance and biocompatibility; TC4 is a titanium alloy containing elements such as aluminum and vanadium, with high strength, good toughness, and excellent comprehensive performance. It is widely used in aerospace, medical equipment, and other fields.

Classification: According to shape, it can be divided into round head screws, self tapping screws, hexagonal screws, countersunk head screws, straight head screws, square head screws, double head screws, etc; According to their purposes, they can be divided into fastening screws, standard screws, non-standard screws, etc.