Specification Brand : PRIME-LINE BulletPoint : 2101-0214 Systems LLC Nut, Flange, Top L/N, 5/16 - 18Unc BulletPoint1 : Size: 5/16 inch-18 BulletPoint2 : Most commonly used and versatile nut BulletPoint3 : Finished nuts are six sided nuts of standard thickness vs heavy duty hex nuts BulletPoint4 : Screws onto a bolt, cap screw or threaded rod of the same thread size BulletPoint5 : Use with washers to help distribute the load (not included) BulletPoint6 : Thread Type: Coarse, Thread Class: UNC-2B BulletPoint7 : Specification(s) Met: ASME B18.2.2 and ASTM A563 Gr A Color : Zinc DriveSystem : External Hex DriveSystem1 : Slotted DriveSystem2 : External Hex ExteriorFinish : Zinc ExternallyAssignedProductIdentifier1 : 049793116475 ExternallyAssignedProductIdentifier2 : 0049793116475 ExternallyAssignedProductIdentifier3 : 00049793116475 FinishType : Zinc GpsrSafetyAttestation : 1 GradeRating : Grade A IncludedComponents : Lock Nut ItemName : Prime-Line 9073356 Finished Hex Nuts, 5/16 In.-18, A563 Grade A Zinc Plated Steel (100 Pack) ItemPackageDimensions_Height : 15.7 centimeters ItemPackageDimensions_Length : 1.5 centimeters ItemPackageDimensions_Width : 11.2 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : hex-nuts Manufacturer : Prime-Line Material : Steel MeasurementSystem : Inch MetalType : Alloy Steel ModelName : Generic ModelNumber : 9073356 NumberOfItems : 100 NumberOfPieces : 100 PartNumber : 9073356 ProductDescription : Description: 1. Made of carbon steel with a zinc-plated surface finish, this hex slotted nut is of high hardness, not easy to rust, deform, wear-resistant, and anti-corrosion. 2. The slots are for the insertion of a cotter pin to secure the nut when used with a drilled shank fastener. 3. Commonly used in industry to secure front wheel bearings or hubs to main shafts on trucks. 4. Suitable for some repair and maintenance in the mechanical industry, shops, garages, household furniture fasteners, etc.