lnternal Tooth-Lock Washers (SAE J403, J405, ASTM B591)

An internal tooth lock washer is a mechanical component used to improve the tightness and safety of equipment connections. It has a circular structure with multiple locking teeth inside, which can be used to fill the gap between it and the connecting body by pressurization during equipment assembly, thus realizing the fastening and locking effect. Internal teeth lock washers are usually made of high-strength stainless steel, with excellent corrosion and high-temperature resistance, suitable for a variety of industrial equipment, mechanical equipment, and automotive and other fields. ASME B18.21.1 internal toothlock washers offer the following features and advantages over common washers:
Provide additional tightening force: internal tooth construction increases friction on fasteners and prevents loosening.
Reusable: ASME B18.21.1 internal toothlock washers can be loaded and unloaded multiple times for easy maintenance and replacement.
Adaptable: The washers are suitable for many specifications of bolts and nuts, with a wide range of applications.
Prevents loosening: The toothed structure of internal tooth lock washers effectively prevents fasteners from loosening under vibration or stress.
Simplifies installation: Using ASME B18.21.1 internal toothlock washers eliminates the need for other fasteners, saving installation time and costs.    

ASME B18.21.1 An internally toothed lock washer is a common fastener used to provide additional tightening force to prevent a bolt or nut from loosening. It has internal teeth that bite into the surface of the bolt or nut during assembly, increasing friction and preventing loosening. ASME B18.21.1 is a standard developed by the American Society of Mechanical Engineers to standardize the dimensional, material, and performance requirements for external toothlock washers. External tooth lock washers are widely used washers in threaded joints. Through its special design and material, it can provide extra tightening force and anti-loosening ability to ensure the reliability and safety of threaded joints.    

Size Can also be According to the Customer's requirement please check the detailed specification sheet details PDF， CAD, 59-60Page 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.