Product Description Material: 304 stainless steel Surface treatment: passivation Product specifications: M2.5M3M4M5M6M8 List of packages: Gasket 50* (M2.5) Gasket 100* (M3) Gasket 50* (M4) Gasket 50* (M5) 25gasket (M6) 25gasket (M8) 1.【DURABLE】The gasket is made of passivated 304 stainless steel, which has good resistance to oxidation, moisture and more durability. 2.【SIZE】 304 stainless steel external toothed washer set includes six sizes M2.5M3M4M5M6M8. Different size gaskets can meet your different needs. 3.【EASY TO USE】 It is designed with external teeth, easier to install and use. Just put the gasket into the screw or bolt to achieve the fastening effect. 4.【OUTER TEETH LOCK WASHERS】 After quenching and hardening, the hardening rate is moderate, and it is widely used in hex bolts, nuts and washers. 5.【ELECTRONIC COMPONENT】Can be widely used in home and commercial appliances, electrical connectors in cars and ships, etc.