Double-End Threaded Stud End Type Straight Cut Material Steel Material Grade/Class Grade 5 Finish Black Oxide Wrench Flats No Overall Length 50 mm System of Measurement Metric Thread Length A 20 mm Thread Length B 12 mm Thread Size A M6-1 Thread Size B M6-1 Thread Direction A Right Hand Thread Direction B Right Hand Color Black Minimum Yield Strength 120 000 psi Rockwell Hardness C27 Min Package Quantity 2