Specification Brand : RAW PRODUCTS CORP BulletPoint1 : Nylon Insert Lock Nuts in Grade 18-8 Stainless Steel BulletPoint2 : Commonly referred to as Nylon Lock Nuts, Nyloc Nuts, or simply Lock Nuts BulletPoint3 : 18-8 Stainless steel nuts designed for use with 18-8 Stainless Steel Bolts & Machine Screws BulletPoint4 : Nylon insert at top of nut prevents accidental loosening from vibration BulletPoint5 : Durable, Corrosion & Rust Resistant 18-8 Stainless Steel Color : Silver CustomerPackageType : 1 DriveSystem : External Hex ExteriorFinish : Plain ExternallyAssignedProductIdentifier : 4250827716110 ExternallyAssignedProductIdentifier1 : 756554520609 ExternallyAssignedProductIdentifier2 : 0756554520609 ExternallyAssignedProductIdentifier3 : 00076335018324 FinishType : Polished GpsrSafetyAttestation : 1 GradeRating : Grade 5 ItemDisplayWeight : 1 pounds ItemName : Nylon Lock Nut 18-8 Stainless Steel - 1/4-20 (.439 Flats x .225 Height) Qty-250 ItemPackageDimensions_Height : 10.16 centimeters ItemPackageDimensions_Length : 0.508 centimeters ItemPackageDimensions_Width : 5.08 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : hardware-locknuts Manufacturer : RAW PRODUCTS CORP Material : Stainless Steel MeasurementSystem : English/Standard MetalType : Stainless Steel ModelNumber : Nylon Insert Lock Nut NumberOfItems : 250 NumberOfPieces : 250 PartNumber : 756554520609 ProductDescription : A nylon insert lock nut is hex shaped, internally threaded with a nylon insert. The nylon material prevents loosening from vibration and cross threads to stop the nut from backing off of the fastener. 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. ProductSiteLaunchDate : 2013-09-06T07:00:00.000Z Size : 1/4"-20 Style : Nylon Lock Nut SupplierDeclaredDgHzRegulation : unknown UnitCount : 5 UnspscCode : 31161700