The black stainless steel screws are made of stainless steel and with black zinc plating or black oxide finished. This type of screw has a strong ability to anti-rust the normal one. The screws are commonly used in machine parts, die fixturing, and clamping. The flat socket head enables driving where there is not sufficient space for wrenches or sockets and allows the screw head to sit flush with the surface. Ever Hardware provides custom-made black stainless steel screws and customizable packaging.
Stainless steel does not readily corrode, rust or stain with water as ordinary steel does. However, it is not fully stain-proof in low-oxygen, high salinity, or poor air-circulation environments. There are different grades and surface finishes of stainless steel to suit the environment the alloy must endure. Stainless steel is used where both the properties of steel and corrosion resistance are required. Stainless steels contain sufficient chromium to form a passive film of chromium oxide, which prevents further surface corrosion by blocking oxygen diffusion to the steel surface and blocks corrosion from spreading into the metal’s internal structure. Passivation occurs only if the proportion of chromium is high enough and oxygen is present.
Zinc coatings prevent oxidation of the protected metal by forming a barrier and by acting as a sacrificial anode if this barrier is damaged. Zinc oxide is a fine white dust that (in contrast to iron oxide) does not cause a breakdown of the substrate’s surface integrity as it is formed. Indeed, the zinc oxide, if undisturbed, can act as a barrier to further oxidation, in a way similar to the protection afforded to aluminum and stainless steels by their oxide layers. The majority of hardware parts are zinc-plated, rather than cadmium-plated.
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Category | Black Stainless Steel Screws |
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Finish | Electro-Plating |
Thread type | Metric/Imperial/According to Request |
Material | Stainless Steel/Carbon Steel/Aluminum/Brass/Copper, etc. |
Brand | Ever Hardware |
Place of origin | China Mainland |
Size | Customized as required |
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What Client’s Say
Those look great! All the specs look perfect.
Perfect ! This is that I need.
Thank you very much.
The bolts are perfect and they’re fits good.
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Height is also ok.
I tested the bolts this morning and they are perfect. Thank you so much.
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