Norway clients ordered different sizes of M3 thread pan head phillips screws with washers samples.
1,000 pieces each size.
There are various sizes and standard items in stock. Welcome to contact.
The combination screws are made of iron and stainless steel.
Generally, the wire of the combined screw is 1010, 1018, 10B21 and so on.
10B21 is used to make 8.8 combination screws. Like the 8.8 grade hex combination screw, it is often used for 10B21 wire.
After heat treatment, it will be removed the hydrogen and electroplating. This is to prevent the spring washer of the hexagon socket combination screw from breaking.
Stainless steel combination screws on the market, generally refers to stainless steel SUS304 combination screws.
SUS201 is used a little. It is rare to combine the screw manufacturers to produce the combination screw of SUS201.
Because the hardness of the screw wire of stainless steel 201 is not well controlled, it is easy to produce cracks.