Screw Types

Classifications of screw:

1. Machine screws: To be used with the matched inner thread
2. Triangular self tapping screws:
   • Save the process of tapping and other related costs
   • The triangular design prevent the looseness, reduce the demand of glue & anti-slide screw
   • Increase the tightness between the screw and the object itself
   • Suitable for various materials and any existing holes made by drilling, washing or molding
   • After partial High frequency induction hardening, the tensile strength of metal application is similar as refining heat treatment
3. Self tapping screws (Include-TP1. TP2): Suitable for various materials such as metal, wood & plastic

Measurement of the length of screws:

Types of heads:

Types of Screw Threads:

Standard: ISO. ANSI. BSW. DIN. JIS
*Special item can be made by custom order

Materials: Medium-carbon spring steel. low-carbon spring steel. alloy steel. alpha-Be. white iron. aluminum. copper...etc

Surface Plating:

1. Anodized treatment
2. Cr 3+ Zinc
3. Zinc
4. Black Zinc
5. Nickel
6. Black Oxide
7. Satilume Nickel
8. Black Nickel
9. Chromium
10. Tin
11. Ti Yellow Zinc
12. White Zinc
13. Patch