Knurled Knob Retractable plungers

Knurled Knob Retractable plungers

Knurled knob spring plungers provide a slip-resistant surface for controlled adjustment.

Smooth knob spring plungers with a hex nut can be held in place with the nut after threading to your desired depth.

Steel is strong and wear resistant. Zinc-plated steel bodies resist corrosion in wet environments. Black-oxide steel bodies resist corrosion in dry environments.

316 stainless steel is more corrosion resistant than 18-8 stainless steel and can be used in saltwater environments.

18-8 stainless steel is chemical resistant.

Brass is corrosion resistant in wet environments; brass noses are soft to minimize marring.

Plastic is chemical resistant and lightweight. Acetal plastic noses are extra soft to minimize scratching soft surfaces such as aluminum.

Spring plungers without thread locker are for use in soft material such as aluminum, in extreme temperatures, and on parts requiring frequent assembly and removal.

Spring plungers with thread locker have a locking patch that adds friction to resist loosening.

custom made: yes

Please provide us with drawing with specific sizes(rod diameter*usable length)