Slotted Truss Head Machine Screw Stainless Steel 18-8 Silicon Ring Special Fasteners Supplier Custom Water Resist Anti Rust

The slotted truss head machine screw with silicon O-ring attached preventing leakage of fluids and gases under pressure. As the screw is seated to its final position against the mating part, the O-ring element compresses slightly and fills the void between the bearing surface of the head and the counter sink/counter bore. They are used to fasten machine components, appliances, and more. Ever Hardware provides custom-made slotted truss head machine screw and customizable packaging.

The slot screw drive has a single slot in the fastener head and is driven by a “common blade” or flat-bladed screwdriver. It was the first type of screw drive to be developed, and for centuries it was the simplest and cheapest to make. The slotted screw is common in simple woodworking applications but is not often seen in applications where a power tool would be used because a power driver tends to slip out of the head, potentially damaging the surrounding material. The tool used to drive a slot is called a common blade, standard, flat-blade, slot-head, flat-tip, or “flat-head/flathead” screwdriver.
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.

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