Prevailing Torque Type Lock Nuts, All metal type hexagon nuts and metal insert/nylon insert type hexagon lock nuts
Are the main two categories of prevailing torque lock nuts. The lock element by metal/nylon inserted or by elliptically deformation on the threads of nuts to get a fricton constant. All metal prevailing torque type lock nuts achieve their prevailing torque by distorting the threads of the nut, then bites into the mating part when tightened. The all-metal locking mechanism causes eventual damage to the protective coating of the threads on both bolt and nut. This increases the incidence of corrosion as well as galling. Replacing the nut will not restore the damage caused to the bolt threads. Thus the all-metal lock nuts generally are one-time use. Material of C1035 and C1045 carbon steel are generally used for all metal type hexagon nuts.
| Items | Description |
Picture | |
| Product name | Galvanized 3 Press Point Grade 8 10 Metal Insert Hexagon Lock Nut |  | |
| Material | Carbon Steel, Alloy Steel, etc. | ||
| Size | M5-M27 | ||
| Standard | Din,ISO or Customized | ||
| Surface treatment | Plain, Zinc Plated, Black Oxide, Nickel, Chrome, etc. | ||
| Grade | Class 8, 10 or other grade standard | ||
| Application | Automotive, instrument, electrical equipment, household appliances, furniture, mechanical equipment, daily living equipment, electronic sports equipment, light industry products, sanitation machinery, market/ hotel equipment supplies, artistic etc. | ||
