How much do you know about screws (1)

Screws, which are the physical and mathematical principles of the oblique circular rotation and friction of the object, and are used to fasten the parts of the utensils step by step.

Screw is a general term for fasteners, a daily colloquial language.

Common screw types:

1. Machine Screw

2. Tapping Screw: self-tapping screw (for metal and plastic)

2.1. Sheet Metal Tapping Screw.

2.2. Plastic Tapping Screw. (for plastic, self-tapping screw)

2.3 Self-drilling Screw (for metal and metal)

3. Wooden Screw

4. Drywall Screw: Cement wall screw.

Common screw materials:

1. Low Carbon Steel

2. Stainless Steel 304/316/410

3. Stainless Steel 302: Better structural toughness;

4. Aluminum 5052: aluminum alloy 5052;

5. Brass/Copper

7. UNS C11000 Copper: antimony copper.

The commonly used specifications of screws and screws are as follows:

1. Slotted

2. Phillips

3. Phil-Slot

4. Hex Socket

5. One Way: One-way (can only be locked in, not exited.