I am working on the drawbar on a recently acquired AG6. The drawbar swing plate brackets have 1"-6 nuts with 5 dots on the face of the nuts. Does anybody know the significance of the markings?
Correction!... 6 dots.
6 dots and sometimes dashes means, Grade 8 just like bolt heads.
self locking nuts are 6 dots a marker - Search
Not as clear as I was thinking, but why would anything simple.
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