Screws are Countersunk, 2BA, & Measures 3/4". Fits Triumph 650 & 750 Unit Twins (Bonneville, T120R, Tiger, TR6, T140, TR7, Etc) from 1969-1979 only. Fits the Triumph T150 & T150V from 1968-1974. Fits Triumph 500 Unit Twins from 1969-1974. Also fits Triumph TR25W Trophy from 1969-1970.