Specification for self-tapping screws and metallic drive screws Ingestion-build-89079 With coarse thread M5 ≤

With coarse thread M5 ≤ D ≤ M39

as required by BS EN 547-1 and BS EN 547-2

BS EN 1992-1-1 is an essential tool for both designers and the concrete industry

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Specification for self-tapping screws and metallic drive screws Ingestion-build-89079 With coarse thread M5 ≤1 Scope This British Standard relates to ferrous and non ferrous tapping screws and metallic drive screws. Provisions are made for two classes of tapping screw, namely thread forming and thread cutting, each available in several types which are described and illustrated in the standard. General dimensions are given for countersunk, raised countersunk, and pan head tapping screws with slotted or recessed heads, slotted mushroom heads, recessed flange