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HB50
straight, slender, metal fastener with a tapering body having a slotted or cross-shaped head at one end and pointed at the other, and having in its simplest form continuous helical threads starting at the point and running along part of the shank
See Figure A.47
See Figure A.47
It is used mainly in woodwork, where secure fixing is required. Various head forms are used with screws, such as ‘flat head’, ‘round head’, ‘oval head’, ‘cheese head’ and ‘countersunk head’.
