M5 Nuts, Bolts & Washers

Execute precise fastening tasks on lighter-duty projects with our comprehensive range of M5 nuts, bolts, and washers. Featuring a standard 5mm metric thread, these fixings are the go-to choice for securing cabinetry hardware, automotive trim, and electronic enclosures where a compact yet secure hold is essential. Whether you are assembling flat-pack furniture or grafting on a detailed engineering repair, our M5 fasteners deliver the consistent threading and reliable strength required for professional results.

To suit a variety of environments, our stock includes zinc-plated options for standard indoor protection and stainless steel variants for superior corrosion resistance in outdoor or damp settings. The range covers specialized fixings such as roofing bolts for joining thin sheet materials, high tensile set screws for structural rigidity, and nylon lock nuts to prevent loosening under vibration. We also supply versatile threaded bars and various washers—including penny and spring types—to help spread the load and protect surfaces. Rely on trade-trusted brands like FandF and Apex for durability you can trust.

Frequently Asked Questions | FAQ

What is the diameter of an M5 bolt?

An M5 bolt has a nominal outer thread diameter of 5mm. It is designed to fit through a 5mm or slightly larger (5.5mm) clearance hole and mate with a corresponding M5 nut or tapped hole.

What spanner size do I need for an M5 nut?

A standard hexagon M5 nut or bolt head typically requires an 8mm spanner or socket. Always check your specific fixings, as some specialized heads (like roofing bolts) may use different drive types such as cross-slotted or flat blades.

When should I use an M5 penny washer?

You should use an M5 penny washer when fastening thin or soft materials, such as timber or sheet metal. The wider surface area of the washer spreads the clamping load of the nut or bolt head, preventing it from pulling through or damaging the material surface.