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Overview ISO 7051:2011 defines the characteristics and designation of cross-recessed raised countersunk (oval) head tapping screws. The standard covers tapping screws with thread sizes ST 2,2 to ST 9…
1 Scope This International Standard specifies the characteristics of cross-recessed raised countersunk (oval) head tapping screws with thread sizes from ST 2,2 to ST 9,5 inclusive.