Specification Brand : uxcell BulletPoint1 : Size: 300pcs of 7 Sizes push-on washers M3x9mm(60pcs), M4x12mm(50pcs), M5x14mm(50pcs), M6x16mm(50pcs), M8x18mm(40pcs), M10x20mm(30pcs), M12x25mm(20pcs). BulletPoint2 : Material: Made from 65Mn steel, a medium carbon spring steel known for its exceptional mechanical properties and wear resistance. BulletPoint3 : Function: Quick speed locking washers absorb and minimize the impact of shock, vibration, and load changes, while also protecting the shaft and load-bearing structures BulletPoint4 : Easy Installation: The internal tooth washers can be fixed on the shaft with simple pressure or rotation during installation. No additional bolts or nuts are required, simplifying the installation process. BulletPoint5 : Application: Speed clip washers are widely used in machinery equipment, industrial production of shock absorption, bearings, machinery, etc. Color : Black ExteriorFinish : Alloy Steel ItemName : uxcell 300pcs Internal Tooth Washers Set M3 M4 M5 M6 M8 M10 M12 Washers, 65Mn Steel Push Nuts ItemPackageDimensions_Height : 0.91 inches ItemPackageDimensions_Length : 5.51 inches ItemPackageDimensions_Width : 3.94 inches ItemTypeKeyword : tooth-lock-washers Manufacturer : uxcell Material : 65Mn Steel MetalType1 : Alloy Steel MetalType2 : Spring Steel NumberOfItems : 320 NumberOfPieces : 300 PartNumber : a24031800ux1678 ProductDescription : Material: Made from 65Mn steel, a medium carbon spring steel known for its exceptional mechanical properties and wear resistance. Function: Quick speed locking washers use a spring to create increased friction and resistance to rotation between the fastener head and the base material. They are designed to absorb and minimize the effects of shock, vibration, and load changes, while also protecting the shaft and load-bearing structures from damage. Easy Installation: The internal tooth washers can be fixed on the shaft with simple pressure or rotation during installation. No additional bolts or nuts are required, simplifying the installation process. Application: Speed clip washers are widely used in machinery equipment, industrial production of shock absorption, bearings, machinery, etc.