Older Ducati bikes (and I would think others ) use a grommet with captive nut inside them for fixing seats/side panels/fairings to the frame.
10 x m4 x 16mm stainless steel bolts. 10 x m4 well nuts. 10x m4 nylon washers. Fairing Bolts. Freshen up those old screen bolts and rubber well nuts with these. This size of screen bolts are used on many Ducati models but on other Italian bikes also.
www.ebay.co.uk
Various thread sizes are available beyond 6mm from here
10Pcs M4 M5 M6 Metric Rubber Well Nuts Windscreen Fairing Cowl Windshield Fastener For Honda For Suzuki Auto Motorbike Off-road
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