Hand Knob, Handle Type Star, Handle Material Thermoplastic, Mounting Type Threaded Stud, Thread Size 5/16 In.-18, Thread Standard UNC, Handle Dia. 40.00mm, Base Dia. 18.00mm, Overall Height 25 mm, Screw Length 20.00 mm, Overall Length 40 mm, Tap Type Not Applicable, Includes -, Standards DIN 6336, Thread Type UNC, Color Black, Features Trivalent Blue Passivated Screw, Finish Matte