Hex Socket Countersunk Bolts - M5 X 20mm - Black

M5 refers to the thread diameter (5 millimeters). 20mm refers to the total length of the bolt, including the head.

These bolts are made from High Tensile Carbon Steel, specifically Grade 10.9, which is known for its strength and durability.

M5 bolts are suitable for medium-duty applications. Common uses include VESA mounts, cabinetry, and automotive interiors. Refer to the project's requirements or existing hardware for confirmation.

The black oxide finish provides some corrosion resistance, making them suitable for short-term or sheltered outdoor use. For long-term or exposed outdoor applications, stainless steel bolts are generally recommended.

You will need a Hex Socket, commonly known as an Allen key, of the appropriate size for M5 bolts (typically 3mm or 4mm).

Gently wipe with a dry or slightly damp cloth. Avoid harsh chemicals or abrasive materials that could scratch or remove the finish.

Yes, as they are made from carbon steel, they are magnetic.

Ensure you are using the correct size Allen key. Check that the pilot hole is the correct diameter and depth. Verify the bolt threads are not damaged and are properly engaged with the material.

The hole may be too shallow, or the head is not properly seated. Ensure the hole is countersunk to the correct angle (90°) for the bolt head. Slightly enlarge the hole if necessary, or use a bolt with a longer length if the material is too thick.

This usually occurs from using the wrong size Allen key or applying excessive force. Try using a slightly larger or different brand Allen key if the original is slightly worn. For severely stripped heads, specialized extraction tools may be needed.

While the black oxide finish offers protection, prolonged exposure to harsh conditions can lead to corrosion. Clean the affected area and apply a rust inhibitor or a thin coat of oil. Consider using stainless steel bolts for environments with high moisture or salt exposure.