short B7 threaded stud +2H NUTS standard with ASTM A193(ISO898-1)
short B7M threaded stud +2HM NUTS standard with ASTM A193(iso898-1)
short L7 threaded stud +7 NUTS standard with ASTM A320
short L7M threaded stud +7ML NUTS standard with ASTM A320
2h NUTS:A194(ISO898-2)
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