Slotted Ball-Nose Spring Plungers
Install these spring plungers with a screwdriver—they're slotted on one or both ends. The ball nose rolls to minimize wear and allow parts to move in and out of position.
Steel is strong and wear resistant.
440C stainless steel is hard, wear resistant, and mildly chemical resistant.
316 stainless steel is more corrosion resistant than 440C and 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; nylon noses are extra soft to minimize marring 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 element that adds friction to resist loosening.
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.
For technical drawings and 3-D models, click on a part number.
Nose | Nose Force, lbs. | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Thread Size  | Body Lg. | Extended Lg. | Dia. | Temp. Range, °F | Extended | Compressed | Choose a Locking Type | Each | |
Steel Body and 440C Stainless Steel Nose | |||||||||
| 6-40 | 0.312" | 0.023" | 0.078" | __ | 0.5 | 1 | 0000000 | 00000 | |
Steel Body and Nylon Plastic Nose | |||||||||
| 6-40 | 0.312" | 0.023" | 0.078" | -20° to 180° | 0.5 | 1 | 00000000 | 0000 | |
316 Stainless Steel Body and 316 Stainless Steel Nose | |||||||||
| 6-40 | 0.312" | 0.023" | 0.078" | __ | 0.5 | 1 | 0000000 | 00000 | |
18-8 Stainless Steel Body and 440C Stainless Steel Nose | |||||||||
| 6-40 | 0.312" | 0.023" | 0.078" | __ | 0.5 | 1 | 000000 | 0000 | |
18-8 Stainless Steel Body and Nylon Plastic Nose | |||||||||
| 6-40 | 0.312" | 0.023" | 0.078" | -20° to 180° | 0.5 | 1 | 00000000 | 0000 | |
Brass Body and Brass Nose | |||||||||
| 6-40 | 0.312" | 0.023" | 0.078" | __ | 0.5 | 1 | 0000000 | 0000 | |
Hex-Drive Ball-Nose Spring Plungers
Install with a hex key for more torque than slotted ball-nose spring plungers. They have a ball nose that rolls to minimize wear and allow parts to move in and out of position. Made from 440C stainless steel, the nose is hard, wear resistant, and mildly chemical resistant.
Steel bodies are strong and wear resistant. They have a black-oxide finish to resist corrosion in dry environments.
18-8 stainless steel bodies are chemical resistant and may be mildly magnetic.
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 element that adds friction to resist loosening.
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.
For technical drawings and 3-D models, click on a part number.