Body Material Body Material |
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Nose Material Nose Material |
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Locking Type Locking Type |
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| Without Thread Locker | Thread Locker |
Body Length Body Length |
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Nose Diameter Nose Diameter |
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Extended Nose Force Extended Nose Force |
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Compressed Nose Force Compressed Nose Force |
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Body Diameter Body Diameter |
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Extended Nose Length Extended Nose Length |
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Material Material |
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Flange Thickness Flange Thickness |
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Flange Diameter Flange Diameter |
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Thread Locker Type Thread Locker Type |
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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.
Nose | Nose Force, lbs. | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Body Lg. | Extended Lg. | Dia. | Extended | Compressed | Drive Size | Choose a Locking Type | Each | |
Black-Oxide Steel Body and 440C Stainless Steel Nose | |||||||||
| 6-40 | 0.35" | 0.023" | 0.078" | 0.5 | 1 | 0.050" | 0000000 | 00000 | |
| 8-32 | 0.445" | 0.025" | 0.094" | 0.5 | 1.3 | 1/16" | 0000000 | 0000 | |
| 10-32 | 0.57" | 0.025" | 0.094" | 1.5 | 3 | 5/64" | 0000000 | 0000 | |
| 1/4"-20 | 0.675" | 0.035" | 0.125" | 3 | 7 | 5/64" | 0000000 | 0000 | |
| 5/16"-18 | 0.72" | 0.04" | 0.156" | 4 | 9 | 3/32" | 0000000 | 0000 | |
| 3/8"-16 | 0.8" | 0.048" | 0.188" | 5 | 10 | 5/32" | 0000000 | 0000 | |
| 1/2"-13 | 1.05" | 0.072" | 0.281" | 6 | 12 | 7/32" | 0000000 | 0000 | |
| 5/8"-11 | 1.25" | 0.096" | 0.375" | 9 | 18 | 1/4" | 0000000 | 0000 | |
18-8 Stainless Steel Body and 440C Stainless Steel Nose | |||||||||
| 6-40 | 0.35" | 0.023" | 0.078" | 0.5 | 1 | 0.050" | 0000000 | 0000 | |
| 8-32 | 0.445" | 0.025" | 0.094" | 0.5 | 1.3 | 1/16" | 0000000 | 0000 | |
| 10-32 | 0.57" | 0.025" | 0.094" | 1.5 | 3 | 5/64" | 0000000 | 0000 | |
| 1/4"-20 | 0.675" | 0.035" | 0.125" | 3 | 7 | 5/64" | 0000000 | 0000 | |
| 5/16"-18 | 0.72" | 0.04" | 0.156" | 4 | 9 | 3/32" | 0000000 | 0000 | |
| 3/8"-16 | 0.8" | 0.048" | 0.188" | 5 | 10 | 5/32" | 0000000 | 0000 | |
| 1/2"-13 | 1.05" | 0.072" | 0.281" | 6 | 12 | 7/32" | 0000000 | 0000 | |
| 5/8"-11 | 1.25" | 0.096" | 0.375" | 9 | 18 | 1/4" | 0000000 | 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 | |||||||||||
| M3 | 0.5 | 7 | 0.4 | 1.5 | __ | __ | 0.7 | 1 | 0000000 | 00000 | |
| M4 | 0.7 | 9 | 0.8 | 2.5 | __ | __ | 0.9 | 2.3 | 0000000 | 0000 | |
| M5 | 0.8 | 12 | 0.9 | 3.5 | __ | __ | 1.8 | 3.2 | 0000000 | 0000 | |
| M5 | 0.8 | 12 | 0.9 | 3.5 | __ | __ | 3.4 | 5 | 0000000 | 0000 | |
| M6 | 1 | 14 | 1 | 3.5 | __ | __ | 0.5 | 1.4 | 0000000 | 0000 | |
| M6 | 1 | 14 | 1 | 3.5 | __ | __ | 2 | 2.9 | 0000000 | 0000 | |
| M6 | 1 | 14 | 1 | 3.5 | __ | __ | 6.3 | 9 | 0000000 | 0000 | |
| M8 | 1.25 | 16 | 1.5 | 5 | __ | __ | 1.1 | 2.3 | 0000000 | 0000 | |
| M8 | 1.25 | 16 | 1.5 | 5 | __ | __ | 3.4 | 6.7 | 0000000 | 0000 | |
| M8 | 1.25 | 16 | 1.5 | 5 | __ | __ | 9 | 13.4 | 0000000 | 0000 | |
| M10 | 1.5 | 19 | 2 | 6 | __ | __ | 1.8 | 3.4 | 0000000 | 0000 | |
| M10 | 1.5 | 19 | 2 | 6 | __ | __ | 4.5 | 7.8 | 0000000 | 0000 | |
| M10 | 1.5 | 19 | 2 | 6 | __ | __ | 13.4 | 20 | 0000000 | 0000 | |
| M12 | 1.75 | 22 | 2.5 | 8 | __ | __ | 2.3 | 4.5 | 0000000 | 0000 | |
| M12 | 1.75 | 22 | 2.5 | 8 | __ | __ | 6.7 | 12.3 | 0000000 | 0000 | |
| M12 | 1.75 | 22 | 2.5 | 8 | __ | __ | 16.8 | 25.7 | 0000000 | 0000 | |
| M16 | 2 | 24 | 3.5 | 10 | __ | __ | 9.2 | 19.3 | 0000000 | 0000 | |
| 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 | |||||||||||
| M3 | 0.5 | 7 | 0.4 | 1.5 | -20° | 180° | 0.7 | 1 | 0000000 | 0000 | |
| M4 | 0.7 | 9 | 0.8 | 2.5 | Not Rated | 200° | 0.9 | 2.3 | 0000000 | 0000 | |
| M5 | 0.8 | 12 | 0.9 | 3.5 | -20° | 180° | 1.8 | 3.2 | 0000000 | 0000 | |
| M5 | 0.8 | 12 | 0.9 | 3.5 | -20° | 180° | 3.4 | 5 | 0000000 | 0000 | |
| 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 | |
| M8 | 1.25 | 16 | 1.5 | 5 | Not Rated | 200° | 1.1 | 2.3 | 0000000 | 0000 | |
| M8 | 1.25 | 16 | 1.5 | 5 | Not Rated | 200° | 3.4 | 6.7 | 0000000 | 0000 | |
| M8 | 1.25 | 16 | 1.5 | 5 | Not Rated | 200° | 9 | 13.4 | 0000000 | 0000 | |
| M10 | 1.5 | 19 | 2 | 6 | Not Rated | 200° | 1.8 | 3.4 | 0000000 | 0000 | |
| M10 | 1.5 | 19 | 2 | 6 | Not Rated | 200° | 4.5 | 7.8 | 0000000 | 0000 | |
| M10 | 1.5 | 19 | 2 | 6 | Not Rated | 200° | 13.4 | 20 | 0000000 | 0000 | |
| M12 | 1.75 | 22 | 2.5 | 8 | Not Rated | 200° | 2.3 | 4.5 | 0000000 | 0000 | |
| M12 | 1.75 | 22 | 2.5 | 8 | Not Rated | 200° | 6.7 | 12.3 | 0000000 | 0000 | |
| M12 | 1.75 | 22 | 2.5 | 8 | Not Rated | 200° | 16.8 | 25.7 | 0000000 | 0000 | |
| 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 | |||||||||||
| M3 | 0.5 | 7 | 0.4 | 1.5 | __ | __ | 0.7 | 1 | 00000000 | 0000 | |
| M4 | 0.7 | 9 | 0.8 | 2.5 | __ | __ | 0.9 | 2.3 | 00000000 | 0000 | |
| M5 | 0.8 | 12 | 0.9 | 3.5 | __ | __ | 1.8 | 3.2 | 00000000 | 0000 | |
| M5 | 0.8 | 12 | 0.9 | 3.5 | __ | __ | 3.4 | 5 | 00000000 | 0000 | |
| 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 | |
| M8 | 1.25 | 16 | 1.5 | 5 | __ | __ | 1.1 | 2.3 | 00000000 | 0000 | |
| M8 | 1.25 | 16 | 1.5 | 5 | __ | __ | 3.4 | 6.7 | 00000000 | 0000 | |
| M8 | 1.25 | 16 | 1.5 | 5 | __ | __ | 9 | 13.4 | 00000000 | 0000 | |
| M10 | 1.5 | 19 | 2 | 6 | __ | __ | 1.8 | 3.4 | 00000000 | 0000 | |
| M10 | 1.5 | 19 | 2 | 6 | __ | __ | 4.5 | 7.8 | 00000000 | 0000 | |
| M10 | 1.5 | 19 | 2 | 6 | __ | __ | 13.4 | 20 | 00000000 | 0000 | |
| M12 | 1.75 | 22 | 2.5 | 8 | __ | __ | 2.3 | 4.5 | 00000000 | 0000 | |
| M12 | 1.75 | 22 | 2.5 | 8 | __ | __ | 6.7 | 12.3 | 00000000 | 0000 | |
| M12 | 1.75 | 22 | 2.5 | 8 | __ | __ | 16.8 | 25.7 | 00000000 | 0000 | |
| M16 | 2 | 24 | 3.5 | 10 | __ | __ | 9.2 | 19.3 | 00000000 | 0000 | |
| M16 | 2 | 24 | 3.5 | 10 | __ | __ | 15.3 | 32 | 00000000 | 0000 | |
| M16 | 2 | 25.4 | 2.4 | 9.5 | __ | __ | 4.4 | 8.8 | 00000000 | 00000 | |
18-8 Stainless Steel Body and Nylon Plastic Nose | |||||||||||
| M3 | 0.5 | 7 | 0.4 | 1.5 | -20° | 180° | 0.7 | 1 | 0000000 | 0000 | |
| M4 | 0.7 | 9 | 0.8 | 2.5 | Not Rated | 200° | 0.9 | 2.3 | 0000000 | 0000 | |
| M5 | 0.8 | 12 | 0.9 | 3.5 | -20° | 180° | 1.8 | 3.2 | 0000000 | 0000 | |
| M5 | 0.8 | 12 | 0.9 | 3.5 | -20° | 180° | 3.4 | 5 | 0000000 | 0000 | |
| 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 | |
| M8 | 1.25 | 16 | 1.5 | 5 | Not Rated | 200° | 1.1 | 2.3 | 0000000 | 0000 | |
| M8 | 1.25 | 16 | 1.5 | 5 | Not Rated | 200° | 3.4 | 6.7 | 0000000 | 0000 | |
| M8 | 1.25 | 16 | 1.5 | 5 | Not Rated | 200° | 9 | 13.4 | 0000000 | 0000 | |
| M10 | 1.5 | 19 | 2 | 6 | Not Rated | 200° | 1.8 | 3.4 | 0000000 | 0000 | |
| M10 | 1.5 | 19 | 2 | 6 | Not Rated | 200° | 4.5 | 7.8 | 0000000 | 0000 | |
| M10 | 1.5 | 19 | 2 | 6 | Not Rated | 200° | 13.4 | 20 | 0000000 | 0000 | |
| M12 | 1.75 | 22 | 2.5 | 8 | Not Rated | 200° | 2.3 | 4.5 | 0000000 | 0000 | |
| M12 | 1.75 | 22 | 2.5 | 8 | Not Rated | 200° | 6.7 | 12.3 | 0000000 | 0000 | |
| M12 | 1.75 | 22 | 2.5 | 8 | Not Rated | 200° | 16.8 | 25.7 | 0000000 | 0000 | |
| 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 | |
Press-Fit Ball-Nose Spring Plungers
Designed with a flange to keep the plunger from being pushed through a hole when the ball is depressed. These spring plungers have a tapered end and smooth body to make them easy to press into unthreaded holes in soft material such as wood, plastic, and aluminum. Drill a slightly smaller hole for a snug fit.
Steel is strong and wear resistant.
Stainless steel is chemical resistant and may be mildly magnetic.
Plastic is chemical resistant and lightweight; plastic noses are extra soft to minimize marring soft surfaces such as aluminum.
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.
Body | Nose | Flange | Nose Force, lbs. | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | Lg. | Extended Lg. | Dia. | Temp. Range, °F | Dia. | Thick. | Extended | Compressed | Each | |
Steel Body | ||||||||||
400 Series Stainless Steel Nose | ||||||||||
| 0.125" | 0.252" | 0.035" | 0.093" | __ | 0.187" | 0.032" | 2 | 5 | 00000000 | 00000 |
| 0.125" | 0.252" | 0.035" | 0.094" | __ | 0.187" | 0.032" | 0.4 | 1.3 | 00000000 | 0000 |
| 0.125" | 0.252" | 0.035" | 0.094" | __ | 0.187" | 0.032" | 0.8 | 2.5 | 00000000 | 0000 |
| 0.157" | 0.33" | 0.046" | 1/8" | __ | 0.215" | 0.035" | 1.5 | 3.5 | 00000000 | 0000 |
| 0.157" | 0.33" | 0.046" | 1/8" | __ | 0.215" | 0.035" | 3 | 7.5 | 00000000 | 0000 |
| 0.188" | 0.394" | 0.058" | 0.156" | __ | 0.25" | 0.04" | 1 | 2.5 | 00000000 | 0000 |
| 0.188" | 0.394" | 0.058" | 0.156" | __ | 0.25" | 0.04" | 2 | 5 | 00000000 | 0000 |
| 0.188" | 0.405" | 0.058" | 0.156" | __ | 0.25" | 0.035" | 4 | 10 | 00000000 | 0000 |
| 0.25" | 0.471" | 0.07" | 0.187" | __ | 0.312" | 0.045" | 1.5 | 3.5 | 00000000 | 0000 |
| 0.25" | 0.471" | 0.07" | 0.187" | __ | 0.312" | 0.045" | 3 | 7 | 00000000 | 0000 |
| 0.25" | 0.481" | 0.07" | 0.187" | __ | 0.312" | 0.044" | 6 | 13 | 00000000 | 0000 |
| 0.312" | 0.643" | 0.09" | 1/4" | __ | 0.375" | 0.045" | 2 | 5 | 00000000 | 0000 |
| 0.312" | 0.643" | 0.09" | 1/4" | __ | 0.375" | 0.045" | 4 | 10 | 00000000 | 0000 |
| 0.312" | 0.643" | 0.09" | 1/4" | __ | 0.375" | 0.045" | 8 | 16 | 00000000 | 0000 |
| 0.375" | 0.785" | 0.11" | 0.312" | __ | 0.5" | 0.078" | 10 | 18 | 00000000 | 0000 |
| 0.375" | 0.786" | 0.11" | 0.312" | __ | 0.5" | 0.078" | 2.5 | 7 | 00000000 | 0000 |
| 0.375" | 0.786" | 0.11" | 0.312" | __ | 0.5" | 0.078" | 5 | 14 | 00000000 | 0000 |
| 0.5" | 1.1" | 0.161" | 0.437" | __ | 0.688" | 0.11" | 4 | 9 | 00000000 | 0000 |
| 0.5" | 1.1" | 0.161" | 0.437" | __ | 0.688" | 0.11" | 8 | 18 | 00000000 | 0000 |
| 0.5" | 1.13" | 0.161" | 0.437" | __ | 0.688" | 0.088" | 12 | 23 | 00000000 | 0000 |
Acetal Plastic Nose | ||||||||||
| 0.125" | 0.252" | 0.035" | 0.093" | __ | 0.187" | 0.032" | 2 | 5 | 000000 | 0000 |
| 0.157" | 0.33" | 0.046" | 1/8" | __ | 0.215" | 0.035" | 1.5 | 3.5 | 0000000 | 0000 |
| 0.157" | 0.33" | 0.046" | 1/8" | __ | 0.215" | 0.035" | 3 | 7.5 | 0000000 | 0000 |
| 0.188" | 0.405" | 0.058" | 0.156" | __ | 0.25" | 0.035" | 4 | 10 | 0000000 | 0000 |
| 0.25" | 0.481" | 0.07" | 0.187" | __ | 0.312" | 0.044" | 6 | 13 | 0000000 | 0000 |
| 0.312" | 0.643" | 0.09" | 1/4" | __ | 0.375" | 0.045" | 8 | 16 | 0000000 | 0000 |
| 0.375" | 0.785" | 0.11" | 0.312" | __ | 0.5" | 0.078" | 10 | 18 | 0000000 | 0000 |
| 0.5" | 1.13" | 0.161" | 0.437" | __ | 0.688" | 0.088" | 12 | 23 | 0000000 | 0000 |
Nylon Plastic Nose | ||||||||||
| 0.125" | 0.252" | 0.035" | 0.094" | -20° to 180° | 0.187" | 0.032" | 0.4 | 1.3 | 0000000 | 0000 |
| 0.125" | 0.252" | 0.035" | 0.094" | -20° to 180° | 0.187" | 0.032" | 0.8 | 2.5 | 0000000 | 0000 |
| 0.188" | 0.394" | 0.058" | 0.156" | -20° to 180° | 0.25" | 0.04" | 1 | 2.5 | 0000000 | 0000 |
| 0.188" | 0.394" | 0.058" | 0.156" | -20° to 180° | 0.25" | 0.04" | 2 | 5 | 0000000 | 0000 |
| 0.25" | 0.471" | 0.07" | 0.187" | -20° to 180° | 0.312" | 0.045" | 1.5 | 3.5 | 0000000 | 0000 |
| 0.25" | 0.471" | 0.07" | 0.187" | -20° to 180° | 0.312" | 0.045" | 3 | 7 | 0000000 | 0000 |
| 0.312" | 0.643" | 0.09" | 1/4" | -20° to 180° | 0.375" | 0.045" | 2 | 5 | 0000000 | 0000 |
| 0.312" | 0.643" | 0.09" | 1/4" | -20° to 180° | 0.375" | 0.045" | 4 | 10 | 0000000 | 0000 |
| 0.375" | 0.786" | 0.11" | 0.312" | -20° to 180° | 0.5" | 0.078" | 2.5 | 7 | 0000000 | 0000 |
| 0.375" | 0.786" | 0.11" | 0.312" | -20° to 180° | 0.5" | 0.078" | 5 | 14 | 0000000 | 0000 |
| 0.5" | 1.1" | 0.161" | 0.437" | -20° to 180° | 0.688" | 0.11" | 4 | 9 | 0000000 | 0000 |
| 0.5" | 1.1" | 0.161" | 0.437" | -20° to 180° | 0.688" | 0.11" | 8 | 18 | 0000000 | 0000 |
18-8 Stainless Steel Body | ||||||||||
400 Series Stainless Steel Nose | ||||||||||
| 0.125" | 0.252" | 0.035" | 0.093" | __ | 0.187" | 0.032" | 2 | 5 | 00000000 | 0000 |
| 0.125" | 0.252" | 0.035" | 0.094" | __ | 0.187" | 0.032" | 0.4 | 1.3 | 00000000 | 0000 |
| 0.125" | 0.252" | 0.035" | 0.094" | __ | 0.187" | 0.032" | 0.8 | 2.5 | 00000000 | 0000 |
| 0.157" | 0.16" | 0.03" | 0.12" | __ | 0.18" | 0.04" | 0.6 | 1.4 | 00000000 | 0000 |
| 0.157" | 0.33" | 0.046" | 1/8" | __ | 0.215" | 0.035" | 1.5 | 3.5 | 00000000 | 0000 |
| 0.157" | 0.33" | 0.046" | 1/8" | __ | 0.215" | 0.035" | 3 | 7.5 | 00000000 | 0000 |
| 0.188" | 0.394" | 0.058" | 0.156" | __ | 0.25" | 0.04" | 1 | 2.5 | 00000000 | 0000 |
| 0.188" | 0.394" | 0.058" | 0.156" | __ | 0.25" | 0.04" | 2 | 5 | 00000000 | 0000 |
| 0.188" | 0.405" | 0.058" | 0.156" | __ | 0.25" | 0.035" | 4 | 10 | 00000000 | 0000 |
| 0.197" | 0.2" | 0.04" | 0.16" | __ | 0.22" | 0.04" | 0.7 | 1.5 | 00000000 | 0000 |
| 0.236" | 0.24" | 0.06" | 0.2" | __ | 0.26" | 0.04" | 1.2 | 2.6 | 00000000 | 0000 |
| 0.25" | 0.471" | 0.07" | 0.187" | __ | 0.312" | 0.045" | 1.5 | 3.5 | 00000000 | 0000 |
| 0.25" | 0.471" | 0.07" | 0.187" | __ | 0.312" | 0.045" | 3 | 7 | 00000000 | 0000 |
| 0.25" | 0.481" | 0.07" | 0.187" | __ | 0.312" | 0.044" | 6 | 13 | 00000000 | 0000 |
| 0.312" | 0.643" | 0.09" | 1/4" | __ | 0.375" | 0.045" | 2 | 5 | 00000000 | 0000 |
| 0.312" | 0.643" | 0.09" | 1/4" | __ | 0.375" | 0.045" | 4 | 10 | 00000000 | 0000 |
| 0.312" | 0.643" | 0.09" | 1/4" | __ | 0.375" | 0.045" | 8 | 16 | 00000000 | 0000 |
| 0.315" | 0.31" | 0.07" | 0.26" | __ | 0.335" | 0.04" | 1.6 | 2.8 | 00000000 | 0000 |
| 0.375" | 0.785" | 0.11" | 0.312" | __ | 0.5" | 0.078" | 10 | 18 | 00000000 | 0000 |
| 0.375" | 0.786" | 0.11" | 0.312" | __ | 0.5" | 0.078" | 2.5 | 7 | 00000000 | 0000 |
| 0.375" | 0.786" | 0.11" | 0.312" | __ | 0.5" | 0.078" | 5 | 14 | 00000000 | 0000 |
| 0.394" | 0.45" | 0.12" | 0.33" | __ | 0.43" | 0.08" | 1.9 | 4.2 | 00000000 | 0000 |
| 0.472" | 0.53" | 0.15" | 0.39" | __ | 0.51" | 0.1" | 2.7 | 6 | 00000000 | 0000 |
| 0.5" | 1.1" | 0.161" | 0.437" | __ | 0.688" | 0.11" | 4 | 9 | 00000000 | 0000 |
| 0.5" | 1.1" | 0.161" | 0.437" | __ | 0.688" | 0.11" | 8 | 18 | 00000000 | 0000 |
| 0.5" | 1.13" | 0.161" | 0.437" | __ | 0.688" | 0.088" | 12 | 23 | 00000000 | 0000 |
Acetal Plastic Nose | ||||||||||
| 0.125" | 0.252" | 0.035" | 0.093" | -30° to 190° | 0.187" | 0.032" | 2 | 5 | 0000000 | 0000 |
| 0.157" | 0.33" | 0.046" | 1/8" | __ | 0.215" | 0.035" | 0.8 | 2 | 0000000 | 0000 |
| 0.157" | 0.33" | 0.046" | 1/8" | __ | 0.215" | 0.035" | 1.5 | 3.5 | 000000 | 0000 |
| 0.157" | 0.33" | 0.046" | 1/8" | __ | 0.215" | 0.035" | 3 | 7.5 | 0000000 | 0000 |
| 0.188" | 0.405" | 0.058" | 0.156" | -30° to 190° | 0.25" | 0.035" | 4 | 10 | 0000000 | 0000 |
| 0.25" | 0.481" | 0.07" | 0.187" | -30° to 190° | 0.312" | 0.044" | 6 | 13 | 0000000 | 0000 |
| 0.312" | 0.643" | 0.09" | 1/4" | -30° to 190° | 0.375" | 0.045" | 8 | 16 | 0000000 | 0000 |
| 0.375" | 0.785" | 0.11" | 0.312" | -30° to 190° | 0.5" | 0.078" | 10 | 18 | 0000000 | 0000 |
| 0.5" | 1.13" | 0.161" | 0.437" | -30° to 190° | 0.688" | 0.088" | 12 | 23 | 0000000 | 0000 |
Nylon Plastic Nose | ||||||||||
| 0.125" | 0.252" | 0.035" | 0.094" | -20° to 180° | 0.187" | 0.032" | 0.4 | 1.3 | 0000000 | 0000 |
| 0.125" | 0.252" | 0.035" | 0.094" | -20° to 180° | 0.187" | 0.032" | 0.8 | 2.5 | 0000000 | 0000 |
| 0.188" | 0.394" | 0.058" | 0.156" | -20° to 180° | 0.25" | 0.04" | 1 | 2.5 | 0000000 | 0000 |
| 0.188" | 0.394" | 0.058" | 0.156" | -20° to 180° | 0.25" | 0.04" | 2 | 5 | 0000000 | 0000 |
| 0.25" | 0.471" | 0.07" | 0.187" | -20° to 180° | 0.312" | 0.045" | 1.5 | 3.5 | 0000000 | 0000 |
| 0.25" | 0.471" | 0.07" | 0.187" | -20° to 180° | 0.312" | 0.045" | 3 | 7 | 0000000 | 0000 |
| 0.312" | 0.643" | 0.09" | 1/4" | -20° to 180° | 0.375" | 0.045" | 2 | 5 | 0000000 | 0000 |
| 0.312" | 0.643" | 0.09" | 1/4" | -20° to 180° | 0.375" | 0.045" | 4 | 10 | 0000000 | 0000 |
| 0.375" | 0.786" | 0.11" | 0.312" | -20° to 180° | 0.5" | 0.078" | 2.5 | 7 | 0000000 | 0000 |
| 0.375" | 0.786" | 0.11" | 0.312" | -20° to 180° | 0.5" | 0.078" | 5 | 14 | 0000000 | 0000 |
| 0.5" | 1.1" | 0.161" | 0.437" | -20° to 180° | 0.688" | 0.11" | 4 | 9 | 0000000 | 0000 |
| 0.5" | 1.1" | 0.161" | 0.437" | -20° to 180° | 0.688" | 0.11" | 8 | 18 | 0000000 | 0000 |
Flush-Mount Press-Fit Ball-Nose Spring Plungers
The flangeless design allows these spring plungers to mount flush with a surface. Press them into unthreaded holes in soft material such as wood, plastic, and aluminum. Drill a slightly smaller hole for a snug fit.
Steel is strong and wear resistant.
Stainless steel is chemical resistant and may be mildly magnetic. 420 and 440C noses are hard and wear resistant.
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.
Body | Nose | Nose Force, lbs. | ||||||
|---|---|---|---|---|---|---|---|---|
| Dia. | Lg. | Texture | Extended Lg. | Dia. | Extended | Compressed | Each | |
Steel Body | ||||||||
440C Stainless Steel Nose | ||||||||
| 0.153" | 0.29" | Knurled | 0.035" | 0.094" | 0.4 | 1.3 | 0000000 | 00000 |
| 0.259" | 0.52" | Knurled | 0.07" | 0.188" | 1.5 | 3.5 | 0000000 | 0000 |
| 0.384" | 0.865" | Knurled | 0.11" | 0.313" | 2.5 | 7 | 0000000 | 0000 |
| 0.509" | 1.21" | Knurled | 0.161" | 0.438" | 4 | 9 | 0000000 | 0000 |
18-8 Stainless Steel Body | ||||||||
440C Stainless Steel Nose | ||||||||
| 0.153" | 0.29" | Knurled | 0.035" | 0.094" | 0.4 | 1.3 | 0000000 | 0000 |
| 0.259" | 0.52" | Knurled | 0.07" | 0.188" | 1.5 | 3.5 | 0000000 | 0000 |
| 0.384" | 0.865" | Knurled | 0.11" | 0.313" | 2.5 | 7 | 0000000 | 0000 |
| 0.509" | 1.21" | Knurled | 0.161" | 0.438" | 4 | 9 | 0000000 | 0000 |
Sealing Press-Fit Ball-Nose Spring Plungers
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.
For technical drawings and 3-D models, click on a part number.
Body | Nose | Flange | Nose Force, lbs. | O-Ring | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | Lg. | Extended Lg. | Dia. | Thick. | Dia. | Extended | Compressed | Temp. Range, °F | Material | Each | |
18-8 Stainless Steel Body and 18-8 Stainless Steel Nose | |||||||||||
| 0.158" | 0.106" | 0.032" | 0.118" | 0.09" | 0.195" | 0.7 | 1.6 | -20° to 210° | Buna-N Rubber | 0000000 | 00000 |
| 0.197" | 0.146" | 0.039" | 0.158" | 0.09" | 0.234" | 0.9 | 1.6 | -20° to 210° | Buna-N Rubber | 0000000 | 0000 |
| 0.236" | 0.13" | 0.059" | 0.197" | 0.15" | 0.313" | 1.3 | 2.7 | -20° to 210° | Buna-N Rubber | 0000000 | 0000 |
| 0.315" | 0.189" | 0.071" | 0.256" | 0.17" | 0.392" | 1.3 | 2.7 | -20° to 210° | Buna-N Rubber | 0000000 | 0000 |
| 0.394" | 0.323" | 0.106" | 0.315" | 0.21" | 0.471" | 2.2 | 4.5 | -20° to 210° | Buna-N Rubber | 0000000 | 0000 |
| 0.473" | 0.413" | 0.138" | 0.394" | 0.22" | 0.549" | 3.4 | 5.6 | -20° to 210° | Buna-N Rubber | 0000000 | 0000 |
Press-Fit Catches for Ball-Nose Spring Plungers
Press these catches into a hole. A countersunk indentation acts as a stop for a ball-nose spring plungers. Also known as ball buttons, they withstand side loads to prevent fixture damage. Made from 440C stainless steel, they're mildly chemical resistant and may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.
| For Nose Dia. | Lg. | OD | Detent Dia. | Each | |
440C Stainless Steel | |||||
|---|---|---|---|---|---|
| 0.062" | 1/8" | 0.108" | 0.056" | 00000000 | 00000 |
| 0.078" | 1/8" | 0.118" | 0.061" | 00000000 | 0000 |
| 0.094" | 3/16" | 0.161" | 0.069" | 00000000 | 0000 |
| 0.125" | 1/4" | 0.203" | 0.111" | 00000000 | 0000 |
| 0.156" | 5/16" | 0.266" | 0.139" | 00000000 | 0000 |
| 0.188" | 3/8" | 0.328" | 0.164" | 00000000 | 0000 |
| 0.281" | 1/2" | 0.438" | 0.241" | 00000000 | 0000 |
| 0.375" | 5/8" | 0.547" | 0.33" | 00000000 | 0000 |
Weld-Mount Catches for Ball-Nose
and Long-Nose Spring Plungers
Weld these catches in place for a strong permanent hold. Use them as a stop for ball-nose and long-nose spring plungers. They fit noses of any length.
Steel is strong and wear resistant.
18-8 stainless steel is chemical resistant and may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.