Harley Shovelhead/Evolution Handlebar Riser Studs, Non-Flats Type (OEM #56105-84)
Threads are straight and clean.
You will note that there are no flats on the center shank section. We believe this was common to the early versions. We understand the studs with the "flats" machining was introduced later. Otherwise, but versions were inchangeable.
041423 D-6 (23 03 26, 7-5)