Specification Brand : PRIME-LINE BulletPoint1 : Size: 9/16 inch-12 BulletPoint2 : Features an internal nylon ring that grips bolt threads better than a standard finished nut BulletPoint3 : Great for use in applications where the bolt may be subject to vibration BulletPoint4 : Can also be used as a secondary nut to help lock the main nut in place BulletPoint5 : The side with the nylon insert should face towards the tip of the bolt, not towards the surface being fastened BulletPoint6 : Thread Type: Coarse, Thread Class: UNC-2B BulletPoint7 : Specification(s) Met: ASME B18.6.6 and ASME B1.1 Color : Zinc DriveSystem : External Hex ExteriorFinish : Zinc ExternallyAssignedProductIdentifier1 : 049793166050 ExternallyAssignedProductIdentifier2 : 0049793166050 ExternallyAssignedProductIdentifier3 : 00049793166050 FinishType : Polished FinishType1 : yellow FinishType2 : blue FinishType3 : red GpsrSafetyAttestation : 1 GradeRating : Grade 2 ItemName : Prime-Line 9075465 Nylon Insert Lock Nuts, 9/16 In.-12, Grade 2 Zinc Plated Steel (10 Pack) ItemPackageDimensions_Height : 13.5 centimeters ItemPackageDimensions_Length : 1.8 centimeters ItemPackageDimensions_Width : 8.7 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : hardware-locknuts Manufacturer : Prime-Line Material : Steel Material1 : Aluminum Material2 : Nylon MaximumShearStrength : [EST] 230 MPa MeasurementSystem : Inch MetalType : Alloy Steel ModelNumber : 9075465 NumberOfItems : 10 NumberOfPieces : 10 PartNumber : 9075465 ProductDescription : Product Name: 5/16"-18 Nylon Insert Hex Lock Nuts, Carbon Steel White Zinc Plated,Hex Lock Nut Silver Self-locking Nylock Locknuts for Hardware Parts Material: made of high quality Carbon Steel White Zinc Plated and Nylon Insert,durable,high hardness,excellent corrosion resistance and anti-rust ability and excellent performance Finish: White Zinc Plated Type: Hex Lock Nut Size: Thread Diameter: 5/16", Thread Pitch: 18 Teeth Per Inch(Coarse) Height: 8.6mm/0.34inch, Hex Width: 12.6mm/0.5inch Thread Coverage: Full Thread; Main Color: Silver Tone Features: With the Nylon Insert, these locknuts greatly reduce loosening under vibration and torque Suitable for matching screws & matching bolts; Widely used for automobile, construction machinery, construction, manufacturing, engineering, assembling, vehicles, sheet metal, aircraft,shipbuilding etc. serves a wide range of use for professionals, amateurs, landlords, repairmen. Package Included: 100pcs 5/16"-18 Hex Lock Nuts Please Note: Any question or problem, do not hesitate to contact us, we will reply you within 24 hours As Manual measurement, please allow slight errors on size The color may exist slight difference due to different screen displays