Jergens 30308 Threaded Spring Plunger

5/8-11, 1-1/8" Thread Length, 5/16" Plunger Projection, Steel Threaded Spring Plunger 0.31" Max Plunger Diam, 1-1/8" Plunger Length, 3.5 Lb Init End Force, 26 Lb Final End Force