1. DIN 7990 is a standard that specifies the requirements for hexagon head bolts with large widths across flats and short thread lengths. These bolts are commonly used in structural applications where high strength and reliability are crucial. The dimensions and tolerances outlined in DIN 7990 ensure that these bolts can securely fasten heavy-duty components together, providing a safe and stable connection.

2. In addition to the specific dimensions, DIN 7990 also covers the material requirements for these bolts, ensuring that they are made from high-quality steel that can withstand the loads and stresses they will be subjected to. This standard helps to guarantee that the bolts will perform as intended and meet the necessary safety standards for the application in which they are used.

3. By adhering to the specifications outlined in DIN 7990, manufacturers can produce hexagon head bolts that are consistent in quality and performance. This standardization not only benefits the producers by providing clear guidelines for production but also benefits the end-users by ensuring that the bolts they receive are reliable and meet the necessary requirements for their intended use.