Phillips Pan Head Machine Screws with Washer — Nickel Plated M5 M6 M8

The listed length is the shank length excluding the head. As a general rule, the screw should engage at least 1.5× the thread diameter into the receiving material. For example, an M6 screw should typically thread at least 9mm into the mating part. Add the thickness of the parts being clamped to determine the minimum shank length you need. Available lengths range from 8mm (≈5/16") to 50mm (≈2") depending on the diameter.

These are generally manufactured to metric property class 4.8 or equivalent, which is suitable for light-to-medium duty fastening applications. Exact tensile and proof load values depend on the specific diameter and length. For structural or safety-critical applications, please contact us to confirm the mechanical grade before ordering.

The nickel plating provides moderate corrosion resistance and is generally suitable for indoor use and light outdoor exposure in dry or low-humidity conditions. For prolonged outdoor exposure, salt spray, or high-moisture environments, a stainless steel or hot-dip galvanized fastener is typically recommended instead.

Yes. These screws use standard ISO metric coarse thread (M5×0.8, M6×1.0, M8×1.25), which is the most common metric thread pitch used worldwide. They are compatible with standard metric nuts, washers, and tapped holes of the corresponding size.

Phillips head size generally corresponds to screw diameter: M5 and M6 screws typically use a PH2 (Phillips #2) bit, while M8 screws typically use a PH3 (Phillips #3) bit. Using the correct bit size reduces cam-out and protects the head recess.

The integrated washer flange distributes the clamping load over a larger surface area compared to a standard pan head. This reduces the risk of the head pulling through softer materials such as plastic panels, sheet metal, or thin wood, and eliminates the need to source and install a separate flat washer.

Yes. The pan head with washer profile is well suited for fastening into pre-tapped holes in aluminum extrusions, plastic enclosures, and sheet metal brackets. The washer flange helps prevent surface damage and distributes load evenly. Always ensure the receiving hole is properly tapped or fitted with a threaded insert for the corresponding metric size.

Choose based on the tapped hole or nut size already in your assembly. M5 is commonly used in electronics enclosures, small brackets, and light fixtures. M6 is a general-purpose size found in furniture hardware, machinery guards, and automotive trim. M8 is used for heavier structural connections, motor mounts, and equipment frames. When in doubt, match the screw to the existing threaded hole in your part.