Mounting Bolts - What Type and Size???

[WDAN]

I need the fender rear fender bolts to attach an OEM pillion on my Standard.
Can anyone help?
If I know what to buy, maybe i can purchase at local hardware.

Thanks,

[tank_post142]

http://www.dealercostparts.com/pages/OemParts?aribrand=HOM#/Honda/GL1500C_A_%2898%29_MOTORCYCLE%2c_USA%2c_VIN%23_1HFSC340-WA100001/SEAT/GL1500C-98-A/2Y14MZ0VMZ04F1700AA