There are two differences between bolts and screws: 1. Bolts generally need to be used in conjunction with nuts. Screws can be directly screwed on the matrix of internal threads; 2. Bolts need to be screwed and locked with strong distance, and the locking forc...

Screws are widely used. Screws are one of our common fasteners. It is mainly used in the following four fields: 1. Stainless steel plate, metal plate, galvanized steel plate, engineering installation. 2. Metal curtain wall metal light compartment and other ind...

Self drilling screw is a mechanical base part, which is in great demand. Usually, bolts, screws, rivets, etc., in order to ensure safety or generally do not need to consider the influence of temperature, bad environment or other dangerous working conditions. C...