Specification Brand : uxcell BulletPoint1 : [SIZE]: Width Measured From Flat to Flat 13mm / 0.51"; Height 8mm / 0.31". BulletPoint2 : [MATERIAL]: Made of carbon steel, finish with zinc-plated for good rust resistance, corrosion resistance, and oxidation resistance. BulletPoint3 : [FEATURE]: With a nylon insert, these lock nuts greatly reduce loosening under vibrations and torque after long-term use, and have a good fastening effect. BulletPoint4 : [ADVANTAGE]:Our hex lock nuts are strong and durable to use. Surface galvanizing has a corrosion-resistant effect. BulletPoint5 : [APPLICATION]: Great for replacing broken or missing nuts. Widely used for repairing furniture or household appliances, automobile, industries, workshops, engineering machinery, ship, DIY, handicrafts, etc. Color : White DriveSystem : External Hex ExteriorFinish : Carbon Steel,Nylon,Zinc ExternallyAssignedProductIdentifier1 : 787392606521 ExternallyAssignedProductIdentifier2 : 0787392606521 ExternallyAssignedProductIdentifier3 : 00076812259684 FinishType : White GpsrSafetyAttestation : 1 ItemName : uxcell M8 x 1.25mm Nylon Insert Hex Lock Nuts, Carbon Steel White Zinc Plated, Pack of 20 ItemPackageDimensions_Height : 14.2 centimeters ItemPackageDimensions_Length : 1 centimeters ItemPackageDimensions_Width : 9.7 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : hardware-locknuts Manufacturer : uxcell Material : Stainless Steel Material1 : Blend Material2 : Blend Material3 : Blend Material4 : Blend Material5 : Blend MeasurementSystem : English/Standard MeasurementSystem1 : Metric MeasurementSystem2 : Inch MetalType : Carbon Steel ModelName : OEMTOOLS 25968 ModelNumber : a18111300ux0212 NumberOfBoxes : 1 NumberOfItems : 20 NumberOfPieces : 100 PackageLevel : unit PartNumber : a18111300ux0212 ProductDescription : 1.Nylon-insert lock nut, polymer-insert lock nut, or elastic stop nut, is a kind of locknut. 2.It is a nut with a nylon insert that resists turning. 3.The plastic insert is placed at the end of the nut, and its inner diameter (ID) is slightly smaller than the main diameter of the screw. 4.The insert elastically over the threads of the screw, but threads are not cut into the nylon.