Tapping Screw

Advantages of Dachange self tapping screw

1. Material: Carbon steel 22A

Carbon steel 22A has good plasticity and is easy to form. Excellent welding performance; Good machinability.

2, head of nail

The product adopts cold heading technology to produce, the head is formed well, the cross groove is deep, not adhesion, with screwdriver with firm not slip, not easy to damage the paper.

3, nail

Standard nail body, excellent operation performance!

Stronger wire + higher grade of heat treatment and phosphating process!

4, spikes

Double line double out, tip Angle design, strong penetration, improve the attack speed, instant fast solid!

5. Silk rolling process

Rub tooth length, outer diameter, mouth, tooth grain.

6, carburizing heat treatment process

The thread is sharp, the surface hardness is high, the core toughness is good, "soft inside and firm outside".

7. Phosphating process

Exclusive dry wall nail pickling phosphating process is used to improve the anti-rust and anti-corrosion performance of screws.

8. Product testing

Continuously reduce the waste nail rate, the qualified rate of products as high as 95%;

Each self-tapping screw has undergone a 48-hour salt spray test and attack speed test before leaving factory!

9. Exquisite packaging design

The traditional nail outer packing is easy to crack and damp in rainy season.