Specification Brand : binifiMux BulletPoint1 : [Package] Contains 50 pieces 1/4"-20 lock nuts,coming with one plastic storage case which perfect for store for long time usage BulletPoint2 : [Dimensions] The thread is imperial 1/4" with 20 TPI pitch and a total height of 8mm(5/16"), angle to angle distance is 11.5mm, fit 7/16" hex spanner, you could check size details by picture 2 more clearly BulletPoint3 : [High-Quality Stainless Steel] Crafted from high-quality stainless steel with plain finish, this acorn nut is rust-proof, tough, and durability BulletPoint4 : [Easy Installation] This binifiMux lock nut is easy to install on screw ends for fastening bolts/ screws by thread inserted into nylon part BulletPoint5 : [Warranty and Service] Committed to best service to you if you have issues about units Color : Silver DriveSystem : External Hex ExteriorFinish : Plain ExternallyAssignedProductIdentifier1 : 613852399088 ExternallyAssignedProductIdentifier2 : 0613852399088 FinishType : Unfinished GradeRating : Grade 304 ItemDisplayWeight : 8.78 ounces ItemName : BinifiMux 50pcs 1/4-20 Inch Nylon Inserted Self Locking Nuts - 304 Stainless Steel, 1/4" Nylock Nuts for Furniture, Tools, Handle ItemPackageDimensions_Height : 8.3058 centimeters ItemPackageDimensions_Length : 1.1938 centimeters ItemPackageDimensions_Width : 7.3914 centimeters ItemPackageQuantity : 50 ItemTypeKeyword : hardware-locknuts Manufacturer : binifiMux Material : Stainless Steel MaximumShearStrength : ~330-360 MPa (rough estimate) MeasurementSystem : English/Standard MetalType : Stainless Steel ModelNumber : AN100203-50 NumberOfItems : 1 NumberOfPieces : 50 PartNumber : CF-352 ProductDescription : Nylon lock nuts differ from a standard hex nut in that they have a nylon insert secured within the nut. The nylon insert is located in a tapered section located at the back of the nut. When you install the nylon lock nut onto a bolt or threaded stud, the nylon insert wraps around the threads and locks the nut in place. This gives a nylon lock nut a distinct advantage over a lock washer when the bolt or threaded stud is subject to vibration, as the nylon lock nut is unaffected by vibration. ProductSiteLaunchDate : 2018-08-27T07:00:00.000Z Size : 1/4"-20 50pcs Style : Modern SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 50 UnspscCode : 31161700