Specification Brand : uxcell BulletPoint1 : [SIZE]: Width Measured From Flat to Flat 7mm / 0.28"; Height 5mm / 0.2". BulletPoint2 : [MATERIAL]: Made of 201 stainless steel, firm, corrosion resistance, oxidation resistance, and durability to use.. 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 hexagonal locking nuts are strong and can be used indoors and outdoors. 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 : silver DriveSystem : External Hex ExteriorFinish : Stainless Steel ExternallyAssignedProductIdentifier : 7618980440735 ExternallyAssignedProductIdentifier1 : 660132005801 ExternallyAssignedProductIdentifier2 : 0660132005801 ExternallyAssignedProductIdentifier3 : 00660132005801 FinishType : Plain Finish GpsrSafetyAttestation : 1 GradeRating : industrial ItemDisplayWeight : 0.939 kilograms ItemName : uxcell M4 x 0.7mm Nylon Insert Hex Lock Nuts, 201 Stainless Steel, Plain Finish, Pack of 10 ItemPackageDimensions_Height : 12.9 centimeters ItemPackageDimensions_Length : 1 centimeters ItemPackageDimensions_Width : 9.8 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : hardware-locknuts Manufacturer : uxcell Material : Steel Material1 : Stainless Steel Material2 : Nylon MaximumShearStrength : High MeasurementSystem : Metric MeasurementSystem1 : Metric MeasurementSystem2 : Inch MetalType : Stainless Steel ModelNumber : a18111300ux0052 NumberOfItems : 10 NumberOfPieces : 1 PackageLevel : unit PartNumber : a18111300ux0052 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 diameter of the screw. 4.The inserts elastically over the threads of the screw, but threads are not cut into the nylon.