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SS 304 316 DIN7504N Cross Recessed Countersunk Head Self Drilling Screw

Drilling locking screws are also used for the connection between thin metal plates, the thread is a common thread with arc triangular section, thread surface also has high hardness, so when connecting, the screw can also be connected to the bottom hole of the thread tapping out of the internal thread, so as to form a connection. The screw is characterized by low screw torque and high locking performance, better performance than ordinary tapping screw, and can replace the use of machine screws;

Wallboard tapping screw is used for the connection between gypsum wallboard and metal keel, the thread is double thread, thread surface also has a high hardness (≥HRC53), can not make a prefabricated hole condition, quickly screwed into the keel, so as to form a connection;

Drlling screw is also very strong hardness, compared to the ordinary screw up, not only to maintain the ability is good, the connection object effect is also very strong, for the performance of the screw, are generally does not need auxiliary processing, can be directly on the object directly drill a Kong Suo into objects, not just use rise very convenient, Also can greatly improve the efficiency of work. This kind of drilling screw can be said to be the first choice of workers in various fields.

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