Self-drilling screws for sheets and plates

General drives
  • The Direkt binding system drills appropriate holes, cuts threads and then binds the elements in a safe way, on a single run.
  • There is no need for pre-drilling, perforation or thread-drilling. 
  • The self-cutting screws are available with Phillips, hexabular or SR switches, for a mass and uniform use with electric tools.

 

Standards
  • The head design and sizes of self-cutting screws have been developed in accordance with the DIN standard.

 

Materials
  • The self-cutting screws are made of surface-toughened steel (min. 560 HV 0.3), with hard core (270-425 HV 0.3)
  • The sizes, performance and tests of the self-cutting screws have been developed in accordance with the DIN 7504 standard.

 

Threads
  • The self-cutting and self-threading (ST marking) screws have been developed in accordance with the DIN 7970 standard. To ensure the appropriate binding of connections, they are full-threaded.

 

Application
  • The A2 anti-corrosion steel self-cutting screws can be used only with aluminium alloys up to 75 HB Brinell hardness; the aluminium screws can be used only with plastic and aluminium alloys.

 

Types
  • DIN 7504 M-H;  ISO 15481 H D head, self-drilling, cross-headed screw 
  • DIN 7504 O-H; ISO 15482 H recessed-headed self-drilling, cross-headed screw
  • DIN 7504 K; ISO 15480  hexagonal, self-drilling flange screw, self-drilling, cross-headed screw 
  • (OPELscrew) self-cutting, cross-headed screw for tailboards
  • (Plató screw) Torx® hollow self-drilling screw bolts, metrical, with recessed head