Types of tapping screws

The head of the self-tapping screw is pointed and threaded. You can use it when you need to drill. It is mainly used for wall panels, furniture, roofs and other places.

Ordinary self-tapping thread：
Ordinary self-tapping threads are “self-tapping threads”, also called “wide-tooth threads”, and most of the surface is electroplated.

Self-tapping screws for wall panels：
　　The white self-tapping screw of the wall panel is a special thread with a horn head, a cross recess (H type), a tooth angle of 60°, and the surface is mostly phosphated (phosphated).

Fiberboard nails：
　　The cross groove is Z-shaped, and the surface treatment is mainly electroplating. There are several types of fiberboard nails: countersunk head, double countersunk head fiberboard nails, pan head, pan head flange (with gasket) fiberboard nails, half countersunk head, half countersunk flange (with gasket) fiberboard nails.

Metal drive screw：
　　The metal drive screw has multiple threads and a special thread with a certain helix angle. Only the American standard has a metal drive screw, but not in our national and German standards.

Self-tapping screws are divided into head type:
Hexagonal flange head, half round head square neck, cylindrical head, spherical cylindrical head, flat round head, oblong head, countersunk head, large flat head square neck, countersunk square neck, half countersunk head, half round head, hexagon head, hexagon Cushion circle, flat round cushion circle.

Self-tapping screws are divided into groove types:
Cross, one word, combination of cross, Philip, inner triangle, inner square corner, inner square corner, inner hexagon, hexagonal cavity ten/character, pods, pozi, flower shape, plum blossom shape, flower shape one Word, special shape,unidirectional, Y-shaped, hexagonal cavity.