How do you distinguish the phillips self tapping screws according to the head shape?
How do you distinguish the phillips self tapping screws according to the head shape? phillips self tapping screws are often used for the connection of smaller parts. It has pan head screws, cylinder head screws, raised countersunk screws and countersunk screws. The head of the pan head screw and the head screw have a higher strength and are connected to the common parts; the head of the half countersunk head has an arc shape, and its top end is slightly exposed after installation and is beautiful and smooth, generally used for instruments or Precision machinery; countersunk screws are used to prevent the nail head from being exposed. The phillips self tapping screws are similar to the slotted ordinary screws and can be replaced by each other. However, the trough phillips self tapping screws have a high trough strength, are not easy to be bald, and have a beautiful appearance. When using, it must be loaded and unloaded with the matching cross-shaped s...