Knob-Style Retractable Spring Plungers




Retract the nose by pulling the knob. These spring plungers have a long nose that provides a large bearing surface to handle side loads.
Knurled knob spring plungers provide a slip-resistant surface for controlled adjustment.
Steel is strong and wear resistant. Zinc-plated steel bodies resist corrosion in wet environments. Black-oxide steel bodies resist corrosion in dry environments.
18-8 stainless steel is chemical resistant.
Plastic is chemical resistant and lightweight.
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 | Texture | Extended | Compressed | Choose a Locking Type | Each | |
Zinc-Plated Steel Body and Steel Nose | |||||||||||||
M6 | 1 | 13 | 21 | 3 | 3 | 13 | Steel | Knurled | 1 | 4 | 00000000 | 000000 | |
Black-Oxide Steel Body and Steel Nose | |||||||||||||
M6 | 1 | 10 | 25 | 3 | 3 | 12 | Acetal Plastic | Smooth | 0.1 | 0.3 | 0000000 | 00000 | |
18-8 Stainless Steel Body and 18-8 Stainless Steel Nose | |||||||||||||
M6 | 1 | 10 | 25 | 3 | 3 | 12 | Acetal Plastic | Smooth | 0.1 | 0.3 | 0000000 | 00000 | |
M6 | 1 | 13 | 21 | 3 | 3 | 13 | 18-8 Stainless Steel | Knurled | 1 | 4 | 00000000 | 00000 |
Twist-to-Lock Knob-Style Retractable Spring Plungers




Lock the nose into the retracted position by pulling the knob and rotating it 90°. These spring plungers have a long nose that provides a large bearing surface to handle side loads.
Knurled knob spring plungers provide a slip-resistant surface for controlled adjustment.
Steel is strong and wear resistant. Zinc-plated steel bodies resist corrosion in wet environments. Black-oxide steel bodies resist corrosion in dry 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 | Nose Force, lbs. | Handle | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Size | Pitch, mm | Lg., mm | Body Lg., mm | Extended Lg., mm | Dia., mm | Extended | Compressed | Dia., mm | Texture | Choose a Locking Type | Each | |
Zinc-Plated Steel Body and Steel Nose | ||||||||||||
M6 | 1 | 13 | 21 | 3 | 3 | 1 | 4 | 13 | Knurled | 00000000 | 000000 | |
Black-Oxide Steel Body and Steel Nose | ||||||||||||
M6 | 1 | 10 | 25 | 3 | 3 | 0.1 | 0.3 | 12 | Smooth | 0000000 | 00000 | |
18-8 Stainless Steel Body and 18-8 Stainless Steel Nose | ||||||||||||
M6 | 1 | 10 | 25 | 3 | 3 | 0.1 | 0.3 | 12 | Smooth | 0000000 | 00000 |
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 | ||||||||||||
M6 | 1 | 20.3 | 29 | 6.4 | 4 | 16 | Steel | 1 | 2.5 | 0000000 | 000000 | |
18-8 Stainless Steel Body and 18-8 Stainless Steel Nose | ||||||||||||
M6 | 1 | 20.3 | 29 | 6.4 | 4 | 16 | Stainless Steel | 1 | 2.5 | 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 | ||||||||||||
M6 | 1 | 17 | 32 | 10 | 4 | 16 | Steel | 0.5 | 2.5 | 0000000 | 000000 | |
18-8 Stainless Steel Body and 18-8 Stainless Steel Nose | ||||||||||||
M6 | 1 | 17 | 32 | 10 | 4 | 16 | Stainless Steel | 0.5 | 2.5 | 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 | ||||||||||||
M6 | 1 | 10 | 19 | 5 | 4 | 13 | Steel | 0.1 | 0.5 | 0000000 | 000000 | |
M6 | 1 | 17 | 32 | 10 | 4 | 16 | Steel | 0.5 | 2.5 | 0000000 | 00000 | |
18-8 Stainless Steel Body and 18-8 Stainless Steel Nose | ||||||||||||
M6 | 1 | 10 | 19 | 5 | 4 | 13 | Stainless Steel | 0.1 | 0.5 | 0000000 | 00000 | |
M6 | 1 | 17 | 32 | 10 | 4 | 16 | Stainless Steel | 0.5 | 2.5 | 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 | ||||||||||||
M6 | 1 | 20.3 | 29 | 6.4 | 4 | 29 | Steel | 1 | 2.5 | 00000000 | 000000 | |
18-8 Stainless Steel Body and 18-8 Stainless Steel Nose | ||||||||||||
M6 | 1 | 20.3 | 29 | 6.4 | 4 | 29 | Stainless Steel | 1 | 2.5 | 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 | |||||||||||
M6 | 1 | 14 | 1 | 3.5 | __ | __ | 0.5 | 1.4 | 0000000 | 00000 | |
M6 | 1 | 14 | 1 | 3.5 | __ | __ | 2 | 2.9 | 0000000 | 0000 | |
M6 | 1 | 14 | 1 | 3.5 | __ | __ | 6.3 | 9 | 0000000 | 0000 | |
Steel Body and Nylon Plastic Nose | |||||||||||
M6 | 1 | 14 | 1 | 3.5 | Not Rated | 200° | 0.5 | 1.4 | 0000000 | 0000 | |
M6 | 1 | 14 | 1 | 3.5 | Not Rated | 200° | 2 | 2.9 | 0000000 | 0000 | |
M6 | 1 | 14 | 1 | 3.5 | Not Rated | 200° | 6.3 | 9 | 0000000 | 0000 | |
18-8 Stainless Steel Body and 440C Stainless Steel Nose | |||||||||||
M6 | 1 | 14 | 1 | 3.5 | __ | __ | 0.5 | 1.4 | 00000000 | 0000 | |
M6 | 1 | 14 | 1 | 3.5 | __ | __ | 2 | 2.9 | 00000000 | 0000 | |
M6 | 1 | 14 | 1 | 3.5 | __ | __ | 6.3 | 9 | 00000000 | 0000 | |
18-8 Stainless Steel Body and Nylon Plastic Nose | |||||||||||
M6 | 1 | 14 | 1 | 3.5 | Not Rated | 200° | 0.5 | 1.4 | 0000000 | 00000 | |
M6 | 1 | 14 | 1 | 3.5 | Not Rated | 200° | 2 | 2.9 | 0000000 | 00000 | |
M6 | 1 | 14 | 1 | 3.5 | Not Rated | 200° | 6.3 | 9 | 0000000 | 00000 |
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. Zinc-plated steel bodies resist corrosion in wet environments. 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 | |||||||||||
M6 | 1 mm | 2.5mm | 2.7mm | __ | 1.6 | 4.5 | 00000000 | 00000 | 0000000 | 00000 | |
M6 | 1 mm | 2.5mm | 2.7mm | __ | 4 | 11.2 | 00000000 | 0000 | 0000000 | 0000 | |
Black-Oxide Steel Body and Acetal Plastic Nose | |||||||||||
M6 | 1 mm | 2.5mm | 2.7mm | -20 to 210° F | 1.3 | 4.3 | 0000000 | 0000 | 0000000 | 0000 | |
Zinc-Plated Steel Body and Steel Nose | |||||||||||
M6 | 1 mm | 5mm | 3mm | __ | 1 | 4 | 00000000 | 0000 | 0000000 | 0000 | |
18-8 Stainless Steel Body and 18-8 Stainless Steel Nose | |||||||||||
M6 | 1 mm | 2.5mm | 2.7mm | __ | 1.6 | 4.5 | 0000000 | 0000 | 0000000 | 0000 | |
M6 | 1 mm | 2.5mm | 2.7mm | __ | 4 | 11.2 | 0000000 | 0000 | 0000000 | 0000 | |
18-8 Stainless Steel Body and Acetal Plastic Nose | |||||||||||
M6 | 1 mm | 2.5mm | 2.7mm | -40 to 190° F | 1.6 | 4.5 | 0000000 | 0000 | 0000000 | 0000 | |
M6 | 1 mm | 2.5mm | 2.7mm | -40 to 190° F | 4 | 11.2 | 0000000 | 0000 | 0000000 | 0000 | |
M6 | 1 mm | 2.5mm | 2.7mm | -20 to 210° F | 1.3 | 4.3 | 0000000 | 00000 | 0000000 | 0000 | |
Steel Body and Acetal Plastic Nose | |||||||||||
M6 | 1 mm | 2.5mm | 2.7mm | -40 to 190° F | 1.6 | 4.5 | 0000000 | 0000 | 0000000 | 0000 | |
M6 | 1 mm | 2.5mm | 2.7mm | -40 to 190° F | 4 | 11.2 | 0000000 | 0000 | 0000000 | 0000 |
Hex-Drive Long-Nose Spring Plungers


Install with a hex key 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.
Steel is strong and wear resistant. Black-oxide steel bodies resist corrosion in dry environments.
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 nylon 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 | Temp. Range, °F | Extended | Compressed | Drive Size, mm | Choose a Locking Type | Each | |
Black-Oxide Steel Body and Acetal Plastic Nose | |||||||||||
M6 | 1 | 25.4 | 4.8 | 3 | -40° to 190° | 3 | 13 | 2.5 | 0000000 | 00000 |
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 | |||
---|---|---|---|
1/4"-20, 1/4"-28, M6 | Ball Nose, Long Nose | 0000000 | 00000 |
Create-a-Vacuum Fittings

Connect these fittings to a vacuum cup and compressed air source to create a vacuum-generating system. They are also known as venturi devices.
Warning: Never use to lift people or items over people.
For technical drawings and 3-D models, click on a part number.