An O-ring in the flange creates a tight seal. Press these spring plungers into unthreaded holes in soft material such as wood, plastic, and aluminum. With a nose and body made from 18-8 stainless steel, they're chemical resistant and may be mildly magnetic. Drill a slightly smaller hole for a snug fit.

Extended nose force is the force required to begin to depress the nose. Compressed nose force is the force required to depress the nose flush with the body. When using a plunger as a detent or stop, a lighter nose force with a shallower hole releases more easily, while a heavier force with a deeper hole holds more securely.

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