Specification Brand : Generic BulletPoint1 : *Prevailing Torque Type Metal Insert Hex Hexagon Self Lock Nut Locknut made from 304 stainless steel material for durability BulletPoint2 : *They have oxidation resistance, which can ensure long time using. BulletPoint3 : *thread has uniform pitch, clear texture and Strong bite BulletPoint4 : *Model Number : M3 M4 M5 M6 M8 M10 M12 M14 M16 BulletPoint5 : Lock nut for weights:made of material for lasting use,barbell Color : One Color ExternallyAssignedProductIdentifier : 9469182051032 ItemName : Generic 1/5pcs M3-M16 304 A2-70 Stainless Steel Prevailing Torque Type Metal Insert Hex Hexagon Self Lock Nut Locknut DIN980 GB6184(5pcs M4) ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 3 centimeters ItemPackageDimensions_Width : 2 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : allen-nuts Manufacturer : yxx1969 Material : Iron ModelNumber : LPPPCIYPC-5PCSM4 NumberOfItems : 1 NumberOfPieces : 1 PartNumber : LPPPCIYPC-5PCSM4 ProductDescription : Features *Prevailing Torque Type Metal Insert Hex Hexagon Self Lock Nut Locknut made from 304 stainless steel material for durability *They have oxidation resistance, which can ensure long time using. *thread has uniform pitch, clear texture and Strong bite *Model Number : M3 M4 M5 M6 M8 M10 M12 M14 M16