The head of pan head screw is round and trapezoidal from the side. What we produce is cross slot, which is installed with an electric screwdriver. The tail is divided into drilling and self-tapping.
Its main features are as following:
⑴The products must be processed by heat treatment and carburizing process to make the screws meet the standard requirements of mechanical properties.
⑵High surface hardness
The core part of the screws has good toughness, that means flexible inside and hard outside. If the surface hardness is low, it can not be screwed into the materials. Also can not be used if core toughness is poor because even a pinch will break it.
It is used for the connection of iron plates, and can be directly screwed into the drill pin without tapping in the hole.
|Finish||White-blue zinc plated, Yellow zinc plated|
|Head type||DIN7504N Pan Head|
|Point||Self drilling/ Self tapping|
|Packing||1000pcs / 800pcs / 500pcs / 250pcs per box, or 1kg / 25kg per bag|
|MOQ||2 Tons for each size|
|Port||Port Tianjin, China|
|Delivery time||Normally in15-30 days|
4. Production process
|1. Raw material||2. Cold upsetting||3. Rolling thread|
|4. Hot treatment||5. Galvanize/Parkerising||6. Packing|
5. Quality control
A) Purchase 1022A materials from famous brand factories in China to ensure the quality.
B) Follow up the production of every procedure, strictly follow the ISO9001 standard.
C) Weigh test
D) Check size
D) Check size
E) Attack speed test
F)Salt spray test more than 72 hours.
6.Packing & Shipment
A) 1kg/small plastic bag, or 25kgs / PP woven bag, then bags or cartons loaded on pallet;
B) 1000pcs / 800pcs / 500pcs / 250pcs per small box, then small boxes into cartons;
C) Support customized packaging.
Shipping: By LCL or FCL Sea Shipment;