That is teeth, also known as screw. It is the name of the Han nationality furniture parts in the Ming and Qing Dynasties. The corresponding standard is not found in the national standard, correspon...
PITTSBURGH, March 3, 2020 /PRNewswire/ — “I grew tired of people on the job trying to determine if anchor bolts were plumb by eyesight alone,” said an inventor from Temple City, C...
Bolts: mechanical parts, cylindrical threaded fasteners with nuts. A type of fastener consisting of a head and a screw (cylindrical body with external thread) needs to cooperate with a nut to faste...