Locking Element

"Short" Spring Plungers With Extended Travel. Click here for sizes.

Steel noses are case hardened for wear resistance without brittleness.

Delrin^® noses prevent marring of aluminum, brass or other soft materials.

Bodies are steel with a black oxide finish.

End pressures are given in pounds. Full pressures are the force pounds needed to move the nose the distance shown in "C" columns.

The nylon locking element holds the plunger body securely in place without the need for lock nuts or other devices. We recommend a 90° countersink 1/32" larger than the major diameter of the mating thread to prevent damaging the element.

Plungers may be ordered with or without the locking element. Plungers without element are the same price, but are considered "specials" and cannot be returned. We recommend using without the locking element for applications in aluminum.

To prevent possible spring damage, use of a Northwestern Wrench is recommended when installing from plunger end.