5/16" Spring Washer in stainless steel. Sold as Pack of 20.
A good quality UK sourced stainless steel imperial washer, useful for a variety of 5/16" fastenings where it is preferable to use a spring washer, to stop the nut coming loose through vibration (i.e. - anything that is 5/16" on a British single cylinder machine or race bike!)
These are good quality stainless steel spring washers of normal width (i.e. the outer diamter of these washers is 14.5mm), however, we also sell a special 'reduced width' spring washer, which we source specifically for fitting on Norton gearbox studs or SOHC Bevel studs - if you need that type then see also - Item 0102.