There is no sharpness specified on the drawing, yet. I don't believe engineering knows exactly how they want to specify it just yet. They are looking to me to provide a variable measurement, and they know they want the teeth as sharp as possible at this point.
These straps are up a against a rotating, painted, alum-diecast housing. Once the housing is rotated to the proper angle, bolts tighten the straps against the housing. They want the teeth to dig into the paint and provide holding force to keep the housing at its desired angle.
Saw teeth, looking at the strap from the side is a good way to describe what the teeth look like. I don't have a comparitor with enough magnification to get a large enough view of the teeth. I have a microscope on order but it has a long lead time, and I'm trying to see if there is an alternate method.
My initial thoughts to measure sharpness would be to intersect the two lines off of each side of the tooth to find a theoretical peak. Then measure from the theoretical peck down to the top of the tooth. The shorter the distance, the sharper the tooth.