>Of course, it should be noted that a grade 8 bolt needs a grade 8 nut.
>Putting a grade 1,3,5 nut on a grade 8 bolt downgrades the fastener to the
>lowest denomination. The softer nut will rip off of the grade 8 bolt at the
>grade 1,3,5 level of the nut.
Not necessarily, I don't have it handy but you only need x turns of thread
engagment (x is obviously a function of the materials involved) for an
internal thread to be stronger than the bolt as far as a tensile failure is
concerned.
>These bolts, at least in the hex head variety are normally maked with a
>series of dash marks around the edge of the head. Grade 1 are not marked.
>If I remember right the Grade 3 has one slash, Grade 5 has two slashes and
>Grade 8 have 3 slash marks on the top of the head.
Grade 5's have 3 marks and grade 8's have 6 marks.
This archive was generated by hypermail 2b29 : Mon Feb 05 2001 - 07:13:45 PST