DS DS/EN ISO 7721-2
DS DSEN SO 7721-2 1994-SEP-22 Countersunk flat head screws - Part 2 Penetraton depth of cross recesses
DS DSEN SO 7721-2 1994-SEP-22 Countersunk flat head screws - Part 2 Penetraton depth of cross recesses
This part of ISO 7721 specifies the penetration depth of cross recesses of countersunk flat head screws for the two series 1 and 2 (deep and shallow, respectively).