Kapasi Fasteners offers Bolt-Nut Securing Sysytem. The-Bolt + Nut + Washer system has a slope lock mechanism which is designed to provide and secure retention against accidental disassembly or rotation caused by many reasons like high frequency, vibration, high impact, high pressure, etc. A wedge interlock is achieved when tightened. This system from Kapasi Fasteners is claimed to be the first Bolt + Nut + Washer system with a "true lock" effect. A positive locking system: this loose proof fastener system or nut + washer, utilizes the conversion of radial thrust into axial thrust on the 6 slopes/wedges to create consistent fasten-out torque, and on the other side, 6 projections are designed to grip the article [or the surface of the job to be tightened] well to ensure the thrust force can work for the best lock, two slots on the sides of washer offer the change to unlock the bolt or nut with special socket wrench [hex washer also available, which does not require special socket]. Such a combination will be easy to lock the objects and make the permanent lock possible, but is designed, not to rotate counter-clockwise. This loose proof fastener system will be secure under vibrations, strong impact or strike, high temperature and pressure. The combination for usage are: Bolt + Washer + Job; Nut + Washer + Job; and Bolt + Nut + Washer. Size and specification of products: grade of material 8.8 to 12.9 high tensile fasteners; hex headlock bolt M6 to M30 [UNC, BSW also]. Hex Lock Washers suitable for above. Round Lock Washers suitable for the above; and special sockets for disassembly [required only in case of round washer].