Black Nylon Phillips Machine Screws with Nuts & Washers — Metric M2 to M8

A general rule is to select a length that allows the screw to pass through the material being fastened and engage at least 1.5× the screw diameter into the receiving material. For example, an M4 screw (4mm diameter) should typically thread at least 6mm into the base. Available lengths in this listing range from 4mm (≈5/32") to 60mm (≈2-3/8"). When in doubt, size up — you can always add a washer to take up extra length.

Nylon screws are generally rated for light-to-medium loads. They are not intended for structural or high-torque applications. Tensile strength for nylon fasteners is typically in the range of 60–80 MPa depending on grade. Always verify load requirements against your specific application before use. For heavy-duty fastening, consider stainless steel alternatives.

Yes — nylon is inherently corrosion-resistant and will not rust, making it a solid choice for humid, wet, or mildly chemical environments. However, prolonged UV exposure can degrade standard nylon over time. For long-term outdoor use in direct sunlight, UV-stabilized nylon or an alternative material may be preferable. For occasional outdoor or splash-prone use, these generally perform well.

These screws use the ISO metric thread standard (M2, M2.5, M3, M4, M5, M6, M8). They are compatible with standard metric nuts, threaded inserts, and tapped holes following ISO 68-1 coarse thread profiles. They are not compatible with UNC/UNF (inch) threaded components. If you're unsure, check whether your existing hardware is labeled in millimeters (metric) or fractions of an inch (imperial).

Nylon screws are electrically non-conductive, making them ideal for electronics assemblies where metal fasteners could cause shorts or interfere with sensitive circuits. They are also lightweight, non-magnetic, and will not cause galvanic corrosion when used with aluminum chassis, copper traces, or other dissimilar metals. Common applications include PCB mounting, sensor brackets, antenna mounts, and plastic panel assembly.

Each set includes black nylon Phillips head machine screws, matching hex nuts, and flat washers in the selected size. The quantity (10, 50, 100, or 500 pieces) refers to the number of screws; nuts and washers are included as a complete fastener set per screw. This means you have everything needed for a through-bolt installation without sourcing additional hardware.

Yes — these use a standard Phillips (cross) drive. In most cases, use a PH0 driver for M2–M2.5, PH1 for M3–M4, and PH2 for M5–M8. Avoid over-torquing: nylon strips more easily than metal, so hand-tighten or use a low-torque setting on power tools. Tighten until snug and the washer seats flat — do not force beyond that point.