Metric fasteners are hardware that is used to mechanically affix two parts together, whose design measurements are in metrics. These fasteners come in different types. They may come as nuts and bolts, which have endless applications, depending on the type and size of equipment on which they will be used. They come in different shapes and sizes too.
Metric screws are used in a vast array of fields and for numerous applications including household repairs and fixtures; industrial joinery for machines such as motors and in the agricultural field for customizing of farm equipment such as tractors.
Materials Used To Make Metric Fasteners
Just like any other type of metric fasteners, these screws come in different shapes and sizes. Depending on the hardness and thickness of the surface in which the screw will go into, different materials are used for different screws. Some of the materials used for making these fasteners include:
- Carbon Steel – It is mostly used to affix a part to a stone or concrete surface. Steel is hard and thus it does not bend when driven through stone.
- Iron – This material is mostly used in the manufacture of wood screws. Wood is soft, and although iron cannot withstand the strain from hard surfaces, iron screws perform perfectly when used on wooden objects.
- Alloy Steel – This type of screw is most suitable when affixing two metal surfaces. It goes through metal easily, because the material used is tougher than ordinary steel.
Key Features To Look Out For
Even though most metric fasteners are made of tough material, there are important qualities to look for while looking for these fasteners. These include:
- Stainless – Most fasteners are made from ferrous material, meaning they are prone to rust. A good fastener should be stainless, meaning that the material it’s made from should be able to withstand moist conditions and not rust. A chromium alloy fastener is most suited for this purpose.
- Tensile strength – This is the maximum strain a fastener can withstand before it breaks. A good fastener should have high tensile strength.
- Fatigue strength – This is the maximum strength a fastener can withstand for an exact number of repeated applications before it fails.
- Proof Load – This is the amount of stress a fastener can withstand without experiencing deformation, and a good fastener should have a high proof load.
These fasteners have numerous roles to play to ensure the safety and soundness of mechanical equipment. So, if you want to ensure that your joints are at their best, then you should consider using high quality metric fasteners.