Extreme-Strength Steel Cap Screw- Hex Head Cap Screw Zinc Yellow Plated, - Grade 9, 1/2"-13 Thread, 2-1/2" Long

(WILL NOT WORK ON RG15 BARS. The head is too thick and will hit on the bottom of the triple trees hindering turning the handlebars.)

NOTE:
minimum tensile strength of 180,000 psi. They are zinc yellow-chromate plated for rust resistance and have nine radial markings to indicate Grade 9. They have a minimum Rockwell hardness of C38 and a Class 2A thread fit.