The fifteen Tl1000s 1999 (x) Usa (e03) Headlamp component parts are all listed in this schematic.
A sample from the products for the Headlamp include: Nut, Cushion, Washer(6.5x18x1.6), Bracket,fr Side Rr,r.
The component with the lowest price in the HEADLAMP schematic is the Washer(6.5x20x1.6).