Im thinking some sort of a wrist pin. Internally threaded on one end. Came in a box with a bunch of machinist tools. There are all different lengths and diameters.
As close as it gets in a car are the tilt pivot pins in the steering column and they are a lot smaller... For me it's a matter of scale never seeing any large ones. This is for a car and the tool to pull them.
Well there ya go. Thanks for the info. I even searched spiral pins and that did not come up. I guess I have a lifetime supply of them since I have a box full of spiral and non spiral.
I think perhaps you were thinking of Spirol Pins, which is an ancient brand name for another type of pin altogether. Those are simply pull dowels, and you have plain and spiral groove styles.
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