similar to DIN 6923
Böllhoff standard 53012 | steel | 8 | zinc-plated | Cr(VI) - free | metric thread
Material version:
8
Cr(VI) Note:
Cr(VI)-free
Flange/washer:
with flange
Risk hydrogen embrittlement:
Thread type:
Metric thread
Force application:
Hexagon head
Material:
Steel 8
Installation method:
Screw into place with tool
Surface:
zinc-plated
Application:
Joining by bolt, joining by stud
Product type:
with locking element
Product group:
Nuts
RoHS conformal:
Material:
Steel
Böllhoff bulletin: Changeover to Cr6+-free protective zinc layers for fasteners
The Manual of fastening Technology: 8th edition
Fastening and assembly technology: Products and services