This talk of grade 8 bolts reminded me of an article in the Sunbeam
Survivor which concerned the high cost and availablility of these bolts.
It states " A quick and easy solution the this dilemna is to visit
your friendly local CATERPILLAR dealer. Everything CAT lists is at least
Grade 8. Their standard bolt has a proof load of 120,000 PSI and a
tensile strength of 150,000 PSI. Their high strength bolts have a 140,00
PSI proof load and a 170,000 tensile strength. The nuts and lock nuts
share the same specifications. Their prices are very reasonable and the
selection is wide. Their stock covers boh coarse and fine threads,, and
a variety of self-locking bolts also is available.
And, for the Tiger owner who really likes detail, these bolts have
class-each has the word CAT forged right into the head! "
I am simply passing this along and can't vouch for the accuracy
etc....
Rob Nanzig
67SV
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