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1 - SELF - tapping SCREWS Head Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .160 thread , Length Tolerances and Mechanical Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .161 Recommended Hole Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1622 - TYPE U HAMMERDRIVE SCREWS Head, thread and Length Tolerances.

Self-Tapping Screws Manufacturing Standards for Thread, Length Tolerances and Mechanical Properties TECHNICAL DATA 1 Dimensions in Millimetres Self Tapping Screws Gimlet Point Gimlet point self-tapping screws have various references depending on the standard. BS 4174 referred to as Type AB DIN 7970 referred to as Type B ISO 1478 referred to as ...

  Thread, Dimensions, Tapping