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Round-head screws with square socket DIN 603
Round-head screws with square socket are also called carriage bolts.
They are used for wood-metal fastenings or to connect wood with wood. These screws have a flat, round head. Below the screw head is a square socket, which works as an anti-rotation protection. The round-head screw with square socket is used among other things for the carport building.
The application area for the round-head screw with square socket is very large due to the various available demensions of that screw.
The round-head screw with square socket is an inexpensive screw connection from the reconstruction work of older builings to the production of dispoable packaging and even for fencing.