Disc-Lock is a Manufacturer of locking fastening products. Fastening products include structural bolts, self-locking nuts, wheel nuts, lock washers, stainless steel washers, lug nuts, tension washers & tension control bolts. Materials include steel, carbon steel & stainless steel. Truck frame & railcar fastening systems are also available. Industries served include automotive, construction, military, marine, mining & rail engineering (FRA approved), Wind Turbines

They are available in Metric or Inch Sizes

Safety Transportation Solutions for the commercial transportation industry, specifically Trucks and Railroads. DISC-LOCK product range include Safety Wheel Nut, Vibration proof Locking Nuts, Truck Frame Fastening System, Rapid Bolt and Nut Tensioning system, Rail Car Fastening system, and locking washers. 

Unlike indicators DISC LOCK nuts and washers  are the ONLY  solution to eliminate wheel loss that cause severe accidents that are often fatal to driver and other road users which are very expensive to owner and operators.