Sanitary Twist-to-Lock Knob-Style Retractable Spring Plungers
Quickly align, join, or hold machine components in place in food, pharmaceutical, and other sanitary environments. Pulling the plunger knob and twisting it 90° will lock the nose into its retracted position. All of these plungers have a long nose that offers a large bearing surface to handle side loads. They’re often used for maintenance jobs.
Made of stainless steel, these plungers won’t corrode from frequent washdowns with harsh cleaners and sanitizers. All are self-draining with rounded edges and polished surfaces, so there are no crevices for bacteria to grow, reducing the chance of a foodborne illness. Seals block out water and keep contaminants from getting trapped in threads or grooves. They’re also bright blue, so you can easily spot broken pieces that fall into your line. The seals are FDA compliant for direct contact with food, but the lubricant is rated for incidental contact.
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.
Twist-to-Lock Pull-Ring Retractable Spring Plungers
Lock the nose into the retracted position by pulling the ring and rotating it 90°. The ring allows you to attach these spring plungers to a lanyard to secure them to machinery and prevent accidental drops. They have a long nose that provides a large bearing surface to handle side loads.
Steel is strong and wear resistant. Zinc-plated steel bodies resist corrosion in wet environments.
18-8 stainless steel is chemical resistant.
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.
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.
Thread | Nose | Handle | Nose Force, lbs. | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Size | Pitch, mm | Lg., mm | Body Lg., mm | Extended Lg., mm | Dia., mm | Dia., mm | Material | Extended | Compressed | Choose a Locking Type | Each | |
Zinc-Plated Steel Body and Steel Nose | ||||||||||||
| M16 | 2 | 43 | 60 | 16 | 10 | 32 | Steel | 2.5 | 5 | 0000000 | 000000 | |
18-8 Stainless Steel Body and 18-8 Stainless Steel Nose | ||||||||||||
| M16 | 2 | 43 | 60 | 16 | 10 | 32 | Stainless Steel | 2.5 | 5 | 0000000 | 00000 | |
Twist-to-Lock L-Handle Retractable Spring Plungers
 | With Thread Locker |
Without Thread Locker |
Lock the nose into the retracted position by pulling the handle and rotating it 90°. These spring plungers have a long nose that provides a large bearing surface to handle side loads.
Steel is strong and wear resistant. Zinc-plated steel bodies resist corrosion in wet environments.
18-8 stainless steel is chemical resistant.
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.
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.
Thread | Nose | Handle | Nose Force, lbs. | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Lg., mm | Body Lg., mm | Extended Lg., mm | Dia., mm | Lg., mm | Material | Extended | Compressed | Choose a Locking Type | Each | |
Zinc-Plated Steel Body and Steel Nose | ||||||||||||
| M16 | 2 | 51 | 78 | 25.4 | 9.7 | 36 | Steel | 1 | 5 | Thread Locker | 0000000 | 000000 |
18-8 Stainless Steel Body and 18-8 Stainless Steel Nose | ||||||||||||
| M16 | 2 | 51 | 78 | 25.4 | 9.7 | 36 | 18-8 Stainless Steel | 1 | 5 | 0000000 | 00000 | |
L-Handle Retractable Spring Plungers
 | With Thread Locker |
Without Thread Locker |
Retract the nose by pulling the handle. These spring plungers have a long nose that provides a large bearing surface to handle side loads.
Steel is strong and wear resistant. Zinc-plated steel bodies resist corrosion in wet environments.
18-8 stainless steel is chemical resistant.
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.
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.
Thread | Nose | Handle | Nose Force, lbs. | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Lg., mm | Body Lg., mm | Extended Lg., mm | Dia., mm | Lg., mm | Material | Extended | Compressed | Choose a Locking Type | Each | |
Zinc-Plated Steel Body and Steel Nose | ||||||||||||
| M16 | 2 | 32 | 48 | 13 | 9.7 | 30 | Steel | 0.8 | 2.5 | 0000000 | 000000 | |
| M16 | 2 | 51 | 77 | 25 | 10 | 33 | Steel | 1 | 5 | 0000000 | 00000 | |
18-8 Stainless Steel Body and 18-8 Stainless Steel Nose | ||||||||||||
| M16 | 2 | 32 | 48 | 13 | 9.7 | 30 | Stainless Steel | 0.8 | 2.5 | 0000000 | 00000 | |
| M16 | 2 | 51 | 77 | 25 | 10 | 33 | Stainless Steel | 1 | 5 | 0000000 | 00000 | |
T-Handle Retractable Spring Plungers
 | With Thread Locker |
Without Thread Locker |
Lock the nose into the retracted position by pulling the handle and rotating it 90°. These spring plungers have a long nose that provides a large bearing surface to handle side loads.
Steel is strong and wear resistant. Zinc-plated steel bodies resist corrosion in wet environments.
Stainless steel is 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 nylon locking patch 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.
Thread | Nose | Handle | Nose Force, lbs. | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Lg., mm | Body Lg., mm | Extended Lg., mm | Dia., mm | Lg., mm | Material | Extended | Compressed | Choose a Locking Type | Each | |
Zinc-Plated Steel Body and Steel Nose | ||||||||||||
| M16 | 2 | 43 | 60 | 16 | 10 | 64 | Steel | 2.5 | 5 | 00000000 | 000000 | |
18-8 Stainless Steel Body and 18-8 Stainless Steel Nose | ||||||||||||
| M16 | 2 | 43 | 60 | 16 | 10 | 64 | Stainless Steel | 2.5 | 5 | 00000000 | 00000 | |
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.
18-8 stainless steel is chemical resistant.
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.
Thread | Nose | Nose Force, lbs. | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Body Lg., mm | Extended Lg., mm | Dia., mm | Min. Temp., °F | Max. Temp., °F | Extended | Compressed | Choose a Locking Type | Each | |
Steel Body and 440C Stainless Steel Nose | |||||||||||
| M16 | 2 | 24 | 3.5 | 10 | __ | __ | 9.2 | 19.3 | 0000000 | 00000 | |
| M16 | 2 | 24 | 3.5 | 10 | __ | __ | 15.3 | 32 | 0000000 | 0000 | |
| M16 | 2 | 25.4 | 2.4 | 9.5 | __ | __ | 4.4 | 8.8 | 0000000 | 00000 | |
Steel Body and Nylon Plastic Nose | |||||||||||
| M16 | 2 | 24 | 3.5 | 10 | -20° | 180° | 9.2 | 19.3 | 0000000 | 0000 | |
| M16 | 2 | 24 | 3.5 | 10 | -20° | 180° | 15.3 | 32 | 0000000 | 0000 | |
18-8 Stainless Steel Body and 440C Stainless Steel Nose | |||||||||||
| M16 | 2 | 24 | 3.5 | 10 | __ | __ | 9.2 | 19.3 | 00000000 | 00000 | |
| M16 | 2 | 24 | 3.5 | 10 | __ | __ | 15.3 | 32 | 00000000 | 00000 | |
| M16 | 2 | 25.4 | 2.4 | 9.5 | __ | __ | 4.4 | 8.8 | 00000000 | 00000 | |
18-8 Stainless Steel Body and Nylon Plastic Nose | |||||||||||
| M16 | 2 | 24 | 3.5 | 10 | -20° | 180° | 9.2 | 19.3 | 0000000 | 0000 | |
| M16 | 2 | 24 | 3.5 | 10 | -20° | 180° | 15.3 | 32 | 0000000 | 0000 | |
Long-Nose Spring Plungers
Install from the nose end without depressing the nose using a driver (sold separately). With a nose that is longer than a ball-nose, these provide a large bearing surface to handle side loads.
Steel is strong and wear resistant. Black-oxide steel bodies resist corrosion in dry environments.
18-8 stainless steel is chemical resistant.
Plastic is chemical resistant and lightweight; acetal 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.
Spring Plungers | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Thread | Nose | Nose Force, lbs. | Drivers | ||||||||
| Size | Thread Pitch | Extended Lg. | Diameter | Temperature Range | Extended | Compressed | Choose a Locking Type | Each | Each | ||
Black-Oxide Steel Body and Steel Nose | |||||||||||
| M16 | 2 mm | 8mm | 7.87mm | __ | 10.4 | 25.3 | 00000000 | 00000 | 0000000 | 000000 | |
Black-Oxide Steel Body and Acetal Plastic Nose | |||||||||||
| M16 | 2 mm | 5mm | 7.5mm | -20 to 210° F | 10 | 22.5 | 0000000 | 00000 | 0000000 | 00000 | |
18-8 Stainless Steel Body and 18-8 Stainless Steel Nose | |||||||||||
| M16 | 2 mm | 8mm | 7.87mm | __ | 10.4 | 25.3 | 0000000 | 00000 | 0000000 | 00000 | |
18-8 Stainless Steel Body and Acetal Plastic Nose | |||||||||||
| M16 | 2 mm | 5mm | 7.5mm | -20 to 210° F | 10 | 22.5 | 0000000 | 00000 | 0000000 | 00000 | |
| M16 | 2 mm | 5mm | 7.8mm | -40 to 190° F | 10.5 | 16.9 | 0000000 | 00000 | 0000000 | 00000 | |
Steel Body and Acetal Plastic Nose | |||||||||||
| M16 | 2 mm | 5mm | 7.8mm | -40 to 190° F | 10.5 | 16.9 | 0000000 | 0000 | 0000000 | 00000 | |
Long Hex-Nose Spring Plungers
Fasten from the nose end with a wrench for more torque than slotted long-nose spring plungers. These spring plungers have a nose that is longer than ball-nose spring plungers to provide a large bearing surface and handle side loads. Made from wear-resistant steel, the body has a black-oxide finish to resist corrosion in dry environments.
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 nylon locking pellet 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.
Thread | Nose | Nose Force, lbs. | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Body Lg., mm | Extended Lg., mm | Wd., mm | Extended | Compressed | Choose a Locking Type | Each | |
Black-Oxide Steel Body and Steel Nose | |||||||||
| M16 | 2 | 38.1 | 8 | 8 | 10.5 | 25.4 | 0000000 | 000000 | |
Extra-Long Hex-Nose Spring Plungers
These spring plungers have a nose that is about three-times longer than standard long hex-nose spring plungers. The extra-long nose provides a large bearing surface to handle side loads. Install from the nose end with a wrench for more torque than slotted long-nose spring plungers. They're made from wear-resistant steel. A nylon locking pellet adds friction to resist loosening.
Black-oxide steel bodies resist corrosion in dry environments.
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.
Thread | Nose | Nose Force, lbs. | Thread Locker | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Body Lg., mm | Extended Lg., mm | Wd., mm | Extended | Compressed | Type | Temp. Range, °F | Each | |
Black-Oxide Steel Body and Steel Nose | ||||||||||
| M16 | 2 | 79.3 | 25.4 | 7.9 | 4 | 20 | Nylon Pellet | -50° to 180° | 00000000 | 000000 |
Drivers for Spring Plungers
Install spring plungers from the nose end without depressing the nose.
| For Thread Size | For Spring Plunger Nose Type | Each | |
Steel | |||
|---|---|---|---|
| 5/8"-11, M16 | Long Nose | 0000000 | 000000 |