Well I am surprised that the grade and size of these bolts is a mystery.
I did send ZF in England a mail asking for the same info.
Had a reply that the box is so obsolete and they sold the rights to the Box years ago to an American outfit that went broke, so no help from that quarter.
The vendors prices are far from Uniform, I have 3 prices 66 from Hall and 125 and 145 from other vendors, will check that Halls are locking wire ones, I could just wait and get one of my bolts and check it when I do the job I suppose...mmm sounds like a plan!
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