Size and Material
Package Includes: 100 PCS M6 metric spring split washer, enough for your daily needs.
Specifications: Inner Dia: 6 mm (1/4"), Outer Dia: 10 mm (0.39").
Material:Spring washer is made of 304 stainless steel; 304 stainless steel split lock washer has good chemical resistance. Split lock washers can be used in a humid environment. Easy to install and durable to use.