Böllhoff standard 53070 | Spring steel | Zinc-plated mechanically | Cr(VI) - free
Lock washers are securing elements similar in shape to a disc spring. They have helical toothing on the upper and lower side. When the washer is placed under the head of the bolt or under the nut, the force is distributed over a larger area and protects the surface of the component. The force connection is optimised. The helical teeth bite into the mating surface, creating a reliable form fit. In addition to the preload force, it may be necessary to consider securing the connection against unscrewing itself and coming loose, depending on the application.
Benefits:
• optimised force connection
• reliable form fit due to helical toothing
• protection of the component surface
Lock washers are securing elements similar in shape to a disc spring. They have helical toothing on the upper and lower side. When the washer is placed under the head of the bolt or under the nut, the force is distributed over a larger area and protects the surface of the component. The force connection is optimised. The helical teeth bite into the mating surface, creating a reliable form fit. In addition to the preload force, it may be necessary to consider securing the connection against unscrewing itself and coming loose, depending on the application.
Benefits:
• optimised force connection
• reliable form fit due to helical toothing
• protection of the component surface
Cr(VI) Note:
Cr(VI)-free
Form:
Round
Risk hydrogen embrittlement:
Material:
Spring steel
Surface:
mechanically zinc-plated
Application:
Joining by bolt, joining by stud, joining by screw
Product type:
Resilient washer, spring washers
Product group:
Washers
RoHS conformal:
Material:
Spring steel
The Manual of fastening Technology: 8th edition
Fastening and assembly technology: Products and services
Böllhoff bulletin: Changeover to Cr6+-free protective zinc layers for fasteners
