| Content: |
| Typical values for allowable surface pressures for different materials Based on VDI 2230 |
| Surface pressure under the head of a hexagon screw according to DIN 931/933 (ISO 4014/4017) with coarse thread |
| Surface pressure under the head of a socket head cap screw according to DIN 912 (ISO 4762/14759) and coarse thread |
| Surface pressure under the screw head |
| Guide to the use of flat washers for screws and nuts according to ISO 887 |