Specification Brand : Glarks BulletPoint1 : ♛【What You Get】: You will receive 7 metric including m3, m4, m5, m6, m8, m10 and m12 65Mn-Steel star washers totaling 600pcs. We have sufficient quantity to meet different sizes for different scenarios. Packed separately by product size for easy storage and use. BulletPoint2 : ♛【Reliable Material】: Quick speed locking washers are made of high quality 65Mn-Steel with good chemical resistance, good corrosion resistance and can be used in wet environment. It can ensure the stability and working life of lock washers. BulletPoint3 : ♛【Star Shape Washer Design】: Our internal tooth star design creates a spring force between the head of the fastener and the substrate, keeping the washer tight against the substrate. More friction and rotational resistance can be created. They are strong, durable and easy to install. BulletPoint4 : ♛【Washer Functions】: The quick speed locking washer is one of the indispensable elements in most mechanical equipment and serves a variety of purposes including fixing, supporting and damping. It is used to tighten and loosen threaded fittings. It can also be used to tighten parallel bars or ring gaps to make them more secure. BulletPoint5 : ♛【Wide Applications】: Internal tooth star lock washers are widely used in various fields, especially in machinery manufacturing, automobile manufacturing, shipbuilding, aerospace, rail transportation, vibration damping, bearings and other industrial production. Color : Black ExternallyAssignedProductIdentifier : 4895253937335 ExternallyAssignedProductIdentifier1 : 0888742087547 ExternallyAssignedProductIdentifier2 : 888742087547 GpsrSafetyAttestation : 1 ItemName : Glarks 600pcs Metric M3-M12 65Mn-Steel Black Internal Tooth Star Lock Washers Assortment Kit Quick Speed Locking Washers ItemPackageDimensions_Height : 17.3 centimeters ItemPackageDimensions_Length : 2.2 centimeters ItemPackageDimensions_Width : 9.9 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : tooth-lock-washers Manufacturer : Glarks Material : 65Mn MetalType : Spring Steel ModelNumber : G-3928 NumberOfItems : 600 NumberOfPieces : 600 PartNumber : G-3928 ProductDescription : Glarks 600pcs Metric M3 M4 M5 M6 M8 M10 M12 65Mn-Steel Black Internal Tooth Star Lock Washers Assortment Kit Quick Speed Locking Washers Push on Locking Washers