Spherical Rod End System of Measurement Inch Ball Stud Center Length 1 in Ball Stud Thread Length 1/2 in Ball Stud Thread Size 1/4 In.-28 Bore Diameter 1/4 in Head Outside Diameter 3/4 in Head Width 0.25 in Shank Thread Length 1 in Shank Thread Size 1/4 In.-28 Housing Material Stainless Steel Shank Thread Direction Right Hand Application Light Duty Ball Diameter 0.5 in Ball Material Stainless Steel Ball Material Grade 440C Ball Stud Material Stainless Steel