Jergens®, 26605, Spring Plunger Without Locking Element, Shortie, 5/8 in Body Length, 5/16-18 Thread, 5/8 in Thread Length, 0.135 in Plunger Diameter, 0.5 lb Initial End Force, 10 lb Final End Force, 3/16 in Plunger Projection, Low Carbon Steel Body, Black Oxide