Specification Brand : uxcell BulletPoint : Makita 224512-1 Lock Nut 5/8-45 BulletPoint1 : Product Name: Nylon Lock Nut; Package Content: 100(+/-2%)pcs x Nylon Lock Nut BulletPoint2 : Main Color: Silver Tone; Material: 304 Stainless Steel, Nylon BulletPoint3 : Weight: 44g; Thread Size: M3 / 0.12"(D) BulletPoint4 : Height: 3.8mm / 0.15'' BulletPoint5 : Width Across Flats: 5.5mm / 0.21'' Color : Silver CustomerPackageType : 1 DriveSystem : External Hex DriveSystem1 : External Hex DriveSystem2 : Cross ExteriorFinish : Stainless Steel ExternallyAssignedProductIdentifier : 4524667374114 ExternallyAssignedProductIdentifier1 : 088381104586 ExternallyAssignedProductIdentifier2 : 0088381104586 ExternallyAssignedProductIdentifier3 : 00088381104586 FinishType : silver GpsrSafetyAttestation : 1 GradeRating : Grade C ItemDisplayWeight : 0.2 pounds ItemName : uxcell M3 Thread Dia Stainless Steel Self-Locking Nylon Insert Lock Hex Nuts 100pcs ItemPackageDimensions_Height : 13.9 centimeters ItemPackageDimensions_Length : 0.9 centimeters ItemPackageDimensions_Width : 12 centimeters ItemPackageQuantity : 1 ItemShape : Triangle ItemTypeKeyword : hardware-locknuts Manufacturer : uxcell Material : Plastic Material1 : Stainless Steel Material2 : Nylon MeasurementSystem : Metric MetalType : Stainless Steel ModelNumber : US-SA-AJD-237048 NumberOfItems : 1 NumberOfPieces : 25 OeManufacturer : GM OemEquivalentPartNumber : 12511963 PackageLevel : unit PartNumber : a17042900ux1401 ProductDescription : A lock nut used for fastening to a bolt when mechanically joining materials together. The nylon material located at the top of the nut prevent loosening from vibration or back off. The insert deforms elastically over the threads of the screw, but threads are not cut into the nylon. The nylon insert locks the nut in two ways. First, it forces the bottom face of the screw threads against the top face of the nut threads,increasing the friction between the two. Second, the nylon applies a compressive force against the screw itself.