Jergens 30477 Threaded Spring Plunger

M16 x 2.0, 38mm Thread Length, 8mm Plunger Projection, Steel Threaded Spring Plunger 7.87mm Max Plunger Diam, 38mm Plunger Length, 4.73 Kg Init End Force, 11.48 Kg Final End Force, 8mm Hex