Specification Brand : uxcell BulletPoint1 : Product Name: Flat Washer; Material: Iron BulletPoint2 : Weight: 45g; Package Content: 100(+/-2%)PCS x Flat Washer BulletPoint3 : Thickness: 1mm / 0.04"; Inner Diameter: 5mm / 0.2" BulletPoint4 : Outer Diameter: 10mm / 0.4"; Standard: M5 BulletPoint5 : Color: Black; Coating: Black Zinc Plated Color : Black ExteriorFinish : Zinc ExternallyAssignedProductIdentifier1 : 5013249361264 ExternallyAssignedProductIdentifier2 : 05013249361264 GpsrSafetyAttestation : 1 ItemName : uxcell M5 x 10mm x 1mm Black Zinc Plated Flat Washers Gaskets Spacers 100PCS ItemPackageDimensions_Height : 13.0048 centimeters ItemPackageDimensions_Length : 2.3876 centimeters ItemPackageDimensions_Width : 2.54 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : flat-washers Manufacturer : uxcell Material : Iron Material1 : Polyvinyl Chloride Material2 : Nylon MetalType : Iron ModelNumber : SYNCE008421 NumberOfItems : 1 NumberOfPieces : 100 PartNumber : a16101300ux0705 Pattern : Solid ProductDescription : Black zinc plated offers corrosion resistance. The flat washer provides a bearing surface for fastener load distribution or is used as a spacer between components. Intended for the general use under the head of a bolt or nut in order to provide a smooth-bearing surface.