M4 Speaker Screws Hex Socket Cap Head Self Tapping Stainless Steel 304 Allen Screw A2 Cylinder Headed for Wood/Plastic Mounting

Description

These self-tapping M4 speaker screws are perfect for providing a clean, professional look to your next speaker project. You have the look of cap head screws without having to deal with the hassle of threaded inserts. Made of high quality 304 stainless steel, it has superior rust resistance and the excellent of oxidation resistance, which can ensure long time using. And the compact thread is not easy to be out of shape and slid in the process of rolling. The deep and clear hex sockets and heads can make your working more easily. Widely using in home and office furniture, machinery, communication equipment, tool box and many other areas. Please carefully check the size details before place an order to make sure this size is what you want. Ever Hardware provides precision speaker screws and customizable packaging.

• Hex wrench to prevent screwdriver from slipping and damaging your driver
• Cap head screws give your installations a neat, professional look
• The stainless steel material resists corrosion and chips
• Self-tapping threads eliminate the need for a pilot hole

The M4 speaker screws are a screw with a 4mm diameter of thread that can tap its own hole as it is driven into the material. For softer substrates such as wood or soft plastics, the self-tapping ability can come simply from a tip that tapers to a gimlet point (in which no flute is needed). Like the tip of a nail or gimlet, such a point forms the hole by displacement of the surrounding material rather than any chip-forming drilling/cutting/evacuating action.
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.