DIN7967 Self-Locking Counter Nuts,PAL nuts, These parts are used as lock nuts or as nuts in lightly loaded assemblies.

How to use fastening nuts: Fastening nuts - DIN7967
Buckling nuts are generally not used as the main force fasteners, their role is to backtighten on the nut to prevent the nut from loosening. Fastening nuts are mainly used as locknuts. When used, the first ordinary nut to be connected to the fastening, and then screwed on the fastening locknut and hand-tightened, so that it is in contact with the ordinary nut, and then use a wrench to tighten the fastening nut 60 ° ~ 90 ° can be. When loosening, the hexagonal nut must be tightened. Make the clearance with the fastening nut, then you can loosen the lock nut. When tightening the nut must be tightened again to use the hexagonal nut and fastening the gap between the nut in order to loosen the fastening nut to avoid scratching the threads of the bolt.     

Function: Prevent the nut from loosening and forced disassembly can not be used again, to prevent people from the permission of private disassembly.
Fastening nut Stamping self-locking nut Anti-loosening back nut-DIN7967 Specifications: M3-M48 Material: 65Mn/304 316 stainless steel Surface: blue zinc Environmental blue zinc Hot-dip galvanized Mechanical galvanized Black color Nickel-plated, etc. Hex Speed Nuts. These speed nuts can be gripped with a wrench for ease of removal. Quickly thread them to hold fasteners in light-duty holding applications. They can also be used as a jam nut to keep hex nuts and bolts securely fastened. Made of zinc-plated steel, they resist corrosion in wet environments.    

Size Can also be According to the Customer's requirement please check the detailed specification sheet details PDF， CAD, 35-36Page See more product details.    

Packing: The inner packaging consists of polyfoam, while the outer layer is a carton. The carton sizes are 29*19*19.5 cm and 23.5*17.5*8 cm, respectively. The pallet dimensions are 215*100*90 cm, or they can be customized according to your requirements.