Specification Brand : ONLISUM BulletPoint1 : Material: Made of 65Mn metal steel, high strength (not easy to deform), wear-resistant, corrosion-resistant, rust-resistant and oxidation-resistant BulletPoint2 : Internal Tooth Lock Washer: The metric internal tooth star lock washers assortment kit contains 7 sizes 330 pcs, which are m3(70 pcs), m4(60 pcs), m5(60 pcs), m6(50 pcs), m8(40 pcs), m10(30 pcs), m12(20 pcs) BulletPoint3 : Function: Lock washers are mainly used for nuts and bolts from rotating and loosening due to vibration and friction, and play a role in preventing loosening and fixing objects to ensure the stability of machines BulletPoint4 : Convenient Storage: Each of the 7 different sizes of internal tooth lock washer are individually stowed by type in an easy to carry clear case.Easy to store and use,so that the lock washer will not be lost or mixed up during use BulletPoint5 : Applications: Widely used in a variety of screw fastening applications, ideal for electrical connections in household and commercial appliances, automobiles and ships Color : As Shown ItemName : ONLISUM Internal Tooth Star Lock Washers Assortment Kit, 330 Pcs Metric Internal Tooth Washers Set, 7 Size (M3 M4 M5 M6 M8 M10 M12) ItemPackageDimensions_Height : 9 centimeters ItemPackageDimensions_Length : 13 centimeters ItemPackageDimensions_Width : 10 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : tooth-lock-washers Manufacturer : ONLISUM MetalType : Stainless Steel ModelNumber : YB23JJ16TFEOU17D NumberOfItems : 330 PartNumber : YB23JJ16TFEOU17D ProductDescription : Features: Made of 65Mn metal steel, high strength (not easy to deform), wear-resistant, corrosion-resistant, rust-resistant and oxidation-resistant. Lock washers are mainly used for nuts and bolts from rotating and loosening due to vibration and friction, and play a role in preventing loosening and fixing objects to ensure the stability of machines. Widely used in a variety of screw fastening applications, ideal for electrical connections in household and commercial appliances, automobiles and ships.