Actually, the grip length is the amount of the bolt that is unthreaded,
i.e., the shank of the bolt.
>Roger that! Thanks. M
>Jul 13, 2010 09:52:38 AM, Theo.Smit@dynastream.com wrote:
>Those bolts are not easily found because of their length and the grip length
>(the amount of the bolt that is threaded). Also, they're British fine thread
>which is almost but not quite the same as SAE: the threads are angled at 55
>degrees and the roots and tips of the threads are rounded rather than sharp.
>So your (SAE) die will change the thread shape somewhat - the less that you
>thread on those bolts with the die, the better.