Sold individually.

Available in several sizes.



Metric hex nut sizes can be a little confusing, until you know what the letters and numbers mean.

The following information should help clear things up.

M2-.4 = a nut with a 2mm interior diameter that measures .4cm or 4mm across from flat edge to flat edge.

M3-.5 = a nut with a 3mm interior diameter that measures .5cm or 5mm across from flat edge to flat edge.

M4-.7 = a nut with a 4mm interior diameter that measures .7cm or 7mm across from flat edge to flat edge.

M5-.8 = a nut with a 5mm interior diameter that measures .8cm or 8mm across from flat edge to flat edge.

M6-1 = a nut with a 6mm interior diameter that measures 1cm or 10mm across from flat edge to flat edge.

M8-1.25 = a nut with a 8mm interior diameter that measures 1.25cm or 12.5mm across from flat edge to flat edge.

M10-1.5 = a nut with a 10mm interior diameter that measures 1.5cm or 15mm across from flat edge to flat edge.

M12-1.75 = a nut with a 12mm interior diameter that measures 1.75cm or 17.5mm across from flat edge to flat edge.

M14-2 = a nut with a 14mm interior diameter that measures 2cm or 20mm across from flat edge to flat edge.

M16-2 = a nut with a 16mm interior diameter that measures 2cm or 20mm across from flat edge to flat edge.

M18-2.5 = a nut with a 18mm interior diameter that measures 2.5cm or 25mm across from flat edge to flat edge.

M20-2.5 = a nut with a 20mm interior diameter that measures 2.5cm or 25mm across from flat edge to flat edge.





Combine this purchase with other items in our store for discounted shipping.





Most marine hardware can be divided into two distinct groups these days.

Cheap junk made with little, if any, thought to the impact its production has on the environment or the workers involved - or high quality gear made from materials designed to last, by companies that care.

We prefer to carry the latter.

Plastic and nylon parts are durable for a while and they satisfy price sensitive shoppers. Their production, however, creates numerous toxins, and eventually enough sunshine or stress will cause them to break.

Chrome, nickel, and zinc plating can protect metal surfaces for years, but their initial production, especially in third-world countries can cause devastating harm.

Painted parts are effective for a while, but paint production is usually nasty, and as it chips and goes over the side, paint carries its own poisons along.

At greenboatstuff.com we choose to carry aluminum, brass, bronze, stainless steel, and occasionally wood hardware.

In an imperfect world we know these choices are not entirely without their faults.

In our opinion, however, they satisfy our criteria for high quality, long lasting products that do the job well while inflicting minimal, if any, harm.

Another important green aspect to our hardware offerings is our lack of a minimum order policy.

Unlike most hardware suppliers that force you to purchase in bulk, at greenboatstuff we try to avoid such restrictive policies.

After all, if a customer only needs a certain quantity of an item, why force them to pay for something that will sit on a shelf for years or be discarded?

Sure, this might sound like a little thing, but if we can discourage waste, especially of products like hardware that are made almost exclusively from natural resources, we believe it is both good business and good for the Planet.