work, hereby publish it under the following license: English Screw Head. Tri-Wing Сurved author name string: Andrew Pertsev Wikimedia username: Andrew...
DescriptionScrew Head - Tri-Wing.svg Diagram of a screw head - Tri-wing Date 14 July 2009 Source Own work Author Inductiveload Other versions Tri-Wing curved png...
this work, hereby publish it under the following license: English Screw. Tri-Wing Сurved author name string: Andrew Pertsev Wikimedia username: Andrew Pertsev...
