DIN 7991 specifies countersunk screws with an internal hexagon drive, sitting flush with the surface once installed — used wherever a projecting head would interfere with fit or finish.
- Steel Grades
- 8.8, 10.9
- Finish
- Plain, Zinc Plated, Black Oxide
DIN 7991 specifies countersunk screws with an internal hexagon drive, sitting flush with the surface once installed — used wherever a projecting head would interfere with fit or finish.