Weld Stud, Thread Type Flanged Fully Threaded, Mountable Stud Type Capacitive Discharge Weld Stud, Weld Stud Type TFTS Flanged Fully Threaded, System of Measurement Inch, Thread Size 1/4 In.-20, Stud Length 5/8 in, Stud Diameter 0.25 in, Thread Standard UNC, Thread Class 2A, Thread Direction Right Hand, Material 18-8 Stainless Steel, Finish Bright (Uncoated), Standards ASTM A493, Minimum Tensile Strength (PSI) 70 ksi, Yield Strength 35,000 psi, Rockwell Hardness B80 Min