M 1,6 to M 52 hexagon head screws threaded up to the head – Product grades A and B
This standard specifies requirements for M1,6 to M52 hexagon head screws threaded up to the head, assigned to product grade A, for sizes up to M24 and length not exceeding 10d or 150mm, and to product grade B for sizes greater than M24 or length exceeding 10d or 150mm.
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