Forgefix High Tensile Set Screw - M8 x 20mm - White

'High Tensile' indicates that the steel used in these screws has been specially heat-treated to achieve a higher strength and yield point than standard steel. This means they can withstand greater stress, tension, and shear forces before deforming or breaking, making them suitable for more demanding applications.

A 'set screw' in this context (M8 x 20, high tensile) refers to a fully threaded fastener, meaning the threading runs all the way up to the head. A 'bolt' often has an unthreaded shank portion below the head. The full thread of these set screws provides maximum engagement and adjustability.

Yes, the zinc plating provides a good level of corrosion resistance for outdoor use in moderately exposed environments. However, for applications exposed to constant moisture, salt spray, or harsh chemicals, a higher level of protection (e.g., hot-dip galvanization, stainless steel, or specialized coatings) might be more appropriate for long-term durability.

You will need a wrench or socket that fits the hex head of the M8 set screw. Standard metric sizes apply. For drilling pilot holes or tapping, an M8 tap and appropriate drill bits will be necessary.

While high tensile set screws are durable, repeated removal and re-installation can wear down the threads or reduce the effectiveness of any applied threadlocker. Inspect the threads for damage before re-using. For critical applications, it's generally recommended to use new fasteners to ensure optimal performance and safety.

'M8' refers to the nominal diameter of the screw's thread, which is approximately 8 millimeters. The 'x 20' indicates the length of the screw from the underside of the head to the tip, which is 20 millimeters.

Ensure you are using the correct size and type of wrench/socket for the hex head. Apply steady, even pressure, and avoid excessive force. Replace stripped screws immediately.

Ensure the screw is perfectly aligned with the tapped hole or nut before applying pressure. Start threading by hand. If resistance is met, back out and try again. Inspect threads for damage; clean or re-tap if necessary.

Confirm the correct torque was applied during installation. Consider using lock washers (e.g., spring washers or Nord-Lock washers) or thread-locking compounds (e.g., Loctite) for applications subject to vibration or dynamic loads. Ensure mating surfaces are clean and free of debris.

While zinc-plated, exposure to harsh or constant moisture can lead to corrosion. Ensure screws are stored in a dry environment. For outdoor or high-humidity applications, consider additional protective coatings or upgrading to stainless steel fasteners if corrosion is a major concern.