Specification Brand : uxcell BulletPoint1 : Product Name: Left Hand Thread Bolt; Package Content: 1 x Left Hand Thread Bolt; Main Color: Black BulletPoint2 : Material: Carbon Steel; Weight: 51g; Coating: Black Oxide Plated BulletPoint3 : Thread Size: M12 x 50mm / 0.47" x 1.97"(D*L); Total Length: 57mm / 2.25"; Thread Style: Fully Thread BulletPoint4 : Hex Head Width: 18mm / 0.71"; Head Style: Hex Head BulletPoint5 : Grade: 8.8; Pitch: 1.75mm Color : black ExteriorFinish : Black Oxide ExternallyAssignedProductIdentifier1 : 605322682929 ExternallyAssignedProductIdentifier2 : 0605322682929 GpsrSafetyAttestation : 1 ItemName : uxcell 8.8 Grade M12x50mm Full Threaded Left Hand Thread Hex Head Bolt Black ItemPackageDimensions_Height : 14.9 centimeters ItemPackageDimensions_Length : 1.6 centimeters ItemPackageDimensions_Width : 9.7 centimeters ItemTypeKeyword : hex-bolts Manufacturer : uxcell ManufacturerGrade : Grade 8 8 ModelNumber : a17071100ux0128 NumberOfPieces : 1 PartNumber : a17071100ux0128 ProductDescription : Made of carbon steel material,black oxide finish,hex head,left hand reverse thread design. Fixing component, industrial and construction fasteners. To tighten a reverse threaded screw, you turn it counter clockwise.To loosen a reverse threaded screw, you turn it clockwise. Used widely in home, office and factory appliance, communication equipments, ship assembly and other machinery industry.